Eru Maldveyjar a skkva s af mannavldum, en ekki vegna breytinga sjvarstu? - Hvernig m a vera...?

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Male hfuborg Maldveyja

pskadag rddi Bogi gstsson vi Mohamed Nasheed, forseta Maldveyja, um hrif loftslagsbreytinga og hrif eirra eyjarnar.

Bloggarinn skilur vel hyggjur hins geekka forseta, v eyjarnar n yfirleitt aeins einn til tvo metra yfir sjvarbor (hsti punktur 2,3 metrar), svo a lti m t af bera til a allt fari blakaf.

Eyjarnar eru kralrif sem vntanlega hefur myndast egar sjvarstaa essum slum var hrri en dag, v krallar lifa j neansjvar.

egar bloggarinn vildi kynnast nnar essum fallegu eyjum rakst hann myndina sem er hr efst sunni, en myndin snir Male, hfuborg Maldveyja. (Smella tvisvar ea risvar myndina til a stkka hana). ar ba rmlega 100.000 manns aeins 2 ferklmetrum!

Nokkrar spurningar vknuu...

1) Hvaan kom allt bggingaefni sem urfti til a reisa essi hreistu hs? Var a aflutt, ea var efni fengi stanum? Lkkar ekki yfirbor eyjunnar vi a?

2) a hltur a urfa a dla upp kynstrinni allri af vatni til a seja orsta borgarba og feramanna, svo ekki s minnst vatn sem arf til votta og baa. Grunnvatnsstaan hltur a lkka, og landi hltur ar me a sga. (Svo er a landbnaurinn rum eyjum klasanum ar sem vkva arf grurinn me sltu vatni).

3) Getur veri a breyting landi af mannavldum s meiri en hkkun sjvar, sem nemur 2 til 3 mm ri, ea 20 til 30 cm ld?

Spyr s sem ekki veit.

Eru essar spurningar kannski kjnalegar og illa grundaar?

Bloggarinn minnist ess einnig a hafa hlusta fyrirlestur Dr. Nils Axel Mrner fyrir nokkrum rum ar sem hann minntist m.a. breytingu sjvarbors vi Maldveyjar sem hann taldi orum auknar. Hann hefur skrifa greinina New perspectives for the future of the Maldives.

Vissulega er sjvarbor a hkka eins og sst myndinni hr fyrir nean. Sem betur fer fyrir ba Maldveyja virist sem hgt hafi hkkuninni undanfarin r, hver svo sem stan er.

Sjvarborsbreytingar

Sem sagt, breytingar sjvarstu vi Maldveyjar geta hugsanlega stafa af msum stum...


Sasta frsla | Nsta frsla

Athugasemdir

1 Smmynd: Hskuldur Bi Jnsson

Kannski rtt a skoa lengri feril, sj loftslag.is: Eru einhverjar sjvarstubreytingar gangi?

Hskuldur Bi Jnsson, 5.4.2010 kl. 18:49

2 Smmynd: Jn Steinar Ragnarsson

Er ekki nokkru lei fyrir menn a sj hvort land er a sga ea sjvarbor a hkka? Mr finnst essi umra skrtin. a hltur a vera hgt a mla etta rum stum heiminum. Hva segja r mlingar? 150cm 150 rum? Anna eins hefur n sst hreyfingum jarskorpu. sland hefur stkka til austurs og vesturs um smu lengs bar ttir sama tma.

Hvort e a Hski? Komdu me stafestinguna v a etta s sjvarvbors hkkun. Hve mikill munurinn er, eru engin rk fyrir mlinu.

Jn Steinar Ragnarsson, 5.4.2010 kl. 19:16

3 Smmynd: Jn Steinar Ragnarsson

Eru mlingarnar fr 1870 og fram 5.-6.ratuginn gerar vsindalega ea er etta eftir munnmlum? g er ekki sannfrur Hski. etta angar langar leiir af rri.

Jn Steinar Ragnarsson, 5.4.2010 kl. 19:19

4 Smmynd: Vilhjlmur Eyrsson

g veit ekkert um Maldive- eyjar, en dnskum sjnvarpstti var skemmtileg frsgn fr Seychelle- eyjum, sem eru lka lglendar. ar hfu menn lka miklar hyggjur af stu mla, .e. sjvarstu- mla og fengu snska srfringa efninu sr til lisinnis. Svarnir mldu og mldu htt og lgt mnuum saman og komust loks a niurstu, sem ekki var hgt a vfengja: Sjvarstaa hafi beinlnis lkka um heila 20 sentimetra san 1964!

Eftir a hafa klra sr lengi hfinu komust Svarnir loks a eirri niurstu, a uppgufun r hfunum hefi aukist svo miki a a skri lkkunina.

Vilhjlmur Eyrsson, 5.4.2010 kl. 20:52

5 Smmynd: Hskuldur Bi Jnsson

Jn Steinar: Til a vita hvernig essi ferill er gerur, arf a smella tengilinn fyrstu athugasemdinni (Eru einhverjar sjvarstubreytingar gangi?), ar m lesa sig til um ennan feril, en einnig er ar tengill beint frigreinina ar sem essi ferill kemur fram - geophysical research letters, sj: A 20th century acceleration in global sea-level rise

Svo vil g senda spurningu Jn: Heldur alvru a vsindamenn sem eru a stdera sjvarstubreytingar, taki ekki inn reikninginn landris og landsig?

Vilhjlmur: etta er absrd hj r. Endilega bentu mr eitthva skriflegt um etta og g skal kanna a.

Hskuldur Bi Jnsson, 5.4.2010 kl. 21:15

6 Smmynd: Vilhjlmur Eyrsson

Mr ykir leitt a geta ekki hjlpa r, v g hefi gaman af a sj etta aftur. etta var tti um loftslagsml danska sjnvarpinu fyrir 2-3 rum.

Vilhjlmur Eyrsson, 5.4.2010 kl. 21:19

7 identicon

Vatn er a mestu fengi Maldveyjum me eimun og innflutningi, jarvegur er of saltur til a hgt s a nta jarvatn. Landbnaur er svo sraltill eyjunum, lklega bi vegna skorts vatni og landrmi.
Male er eina eyjan me svona borgarbygg, byggingarefni er a tluveru leyti fengi erlendis fr.
Eyjarskeggar verja hum fjrhum a dla upp sandi til ess a vihalda eyjunum, a.m.k sumum eirra. ar gegnir landfok lka kvenu hlutverki. Sem sagt, Maldveyjar skkva hgt og rlega og sturnar eru margttar.

Lsing Vilhjlms Seychelles-eyjum er svo vgast sagt nkvm. 42 eirra helstu eru klettaeyjar og alls lkar Maldveyjum, hinar eru kraleyjar og flestar byggar. En kannski voru Svarnir a skoa r.

Matthas (IP-tala skr) 5.4.2010 kl. 21:31

8 Smmynd: Sveinn Atli Gunnarsson

gst, a getur vel veri a Maldaveyjur sigi eitthva (hef ekki kynnt mr a tarlega), en a er augljst a hkkun sjvarstu upp 30 cm svo dmi s teki, myndi hafa mikil hrif eyjar sem liggja svo lgt sem Maldaveyjar gera. Svo vi tlum ekki um meiri hkkun...eins og gti vel tt sr sta.

Sm upplsingar um Nils-Axel Mrner, fyrir sem vilja vita nnari deili eim manni sem telur sig vita meira um sjvarstubreytingar en helstu srfringar veraldar...

Nils-Axel Morner

Morner, James Randi and "dowsing"

Morner claims to be an expert in "dowsing," the practice of finding water, metals, gemstones etc. through the use of a Y-shaped twig.

Morner's attempt to prove his dowsing abilities is chronicled by James Randi, the well-known myth buster, who has offered the longstanding One Million Dollar Paranormal Challenge.

Research and Background

Morner is a retired professor from the University of Stockholm. According to a search of 22,000 academic journals, Morner has published 65+ original research papers in peer-reviewed journals, mainly in the area of paleoseismicity, in other words the study of historical earthquake activity.

Sveinn Atli Gunnarsson, 5.4.2010 kl. 22:39

9 Smmynd: Magns Jnsson

gst: Ein sm spurning hrna handa ykkur spekingunum, er sasta sldin binn, hef veri a velta fyrir mr a ef hn st 60 sund r, og mestur kraftur var r henni fyrir um 10 sund rum ea svo, er tali a vi mantetrinn hfum gengi urrum ftum fr Asu til Amerku, sjvarstaa hefur vntanlega veri bsna lg, og er lkast til enn a hkka san, a virist veraa einhverjir tugir rsunda s bara eins og augnablik sgu jararinarokkar, er sldin alvru bin ea er hennloki enn, og hvenr m vnta ansta taki vi?, hva var langt rsundum milli sust saldaef einhver skildi vita a?

Magns Jnsson, 5.4.2010 kl. 22:56

10 Smmynd: gst H Bjarnason

Eins og fram kemur pistlinum var a vitali vi forseta Maldveyja sjnvarpinu sem vakti athygli mna eyjunum. g vissi nnast ekkert um r, en rak rogastans egar g s loftmyndina af Male ar sem 100.000 manns ba fjlda hhsa aeins tveim ferklmetrum.

g hafi s fyrir mr frislar eyjar ar sem frumbyggjar una glair vi sitt, stunda landabna og fiskveiar, en alls ekki ra fyrir essum skpum.

a var til ess a mr kom til hugar a essi grarlegu mannvirki gtu valdi vandrum varandi gang sjvar. Hvort essi grarlega breyting landntingu gtu hafa haft sambrileg hrif og hkkun sjvarbors. Li mr hver sem vill.

gst H Bjarnason, 6.4.2010 kl. 05:42

11 Smmynd: gst H Bjarnason

Jn Ragnar bendir (athugasemd #2) vandkvi vi mlingu breytingu sjvarstu vegna breytinga jarskorpunni. a eru or a snnu. Vtt og breitt um heiminn (aallega norurhveli) eru landfastir mlar sem mla mismuninn sjvarbori og landinu vikomandi sta. essir mlar gefa mjg misvsandi niurstu. Sj t.d. hr (Current sea level rise).

sustu rum hafa menn fengi asto vi essar mlingar me bnai gervihnttum. ar eru fjlmargir skekkjuvaldar, annig a endanlega eru essar gervihnattamlingar leirttar me mliniurstum fr rvali hefbundinna landfastra mla.

Varandi gervihnattamlingarnar, er veri a nota radar gervihnttum sem eru 1300 km h. Breyting sjvarstu er t.d. gefin upp sem 3,2 mm ri. .e. me upplausn sem nemur 0,1 mm. Mannshr er um 0,1 mm ykkt, og gervihntturinn 1.300.000.000 mm h. Radarbylgjurnar urfa a ferast tvfalda essa vegalengd. a arf v ekki a koma vart a essar mlingar eru ekkert grn og raun varasamt a treysta eim blindandi n ess a ekkja helstu skekkjuvalda.

gst H Bjarnason, 6.4.2010 kl. 06:06

12 Smmynd: gst H Bjarnason

Svatli skrir fr v a Mrner hafi haft huga "dowsing". Hver tilgangurinn er veit g ekki, en innihaldi virist vera afrita af einhverri "ad hominem" vefsu og a vera eitthva neikvtt.

Dowsing er vagmul afer sem menn tldu a gti t.d. nst til a finna vatnsfylltar sprungur neanjarar. Prjnum ea Y-laga grein er haldi annig a lti urfi til a tki hreyfist. a er v mjg nmt fyrir breytingum, sem geta einfaldlega veri vvakippir.

Svo er a aftur mti spurning hvort tki geti veri nmt fyrir breytingum rafsvii ea ru. Vi vitum a jarvsindamenn nota msar aferir til a finna frvik ("anomalur") irum jarar, svo sem jarvinmsmla, yngdarsvismla og segulmla. Fyrir skmmu var fjalla um krtur sem virtust skynja fyrirboa jarskjlfta, og til eru fjlmargar frsagnir af hegun dra fyrir skjlfta. Menn vita ekki hvers vegna, en eru farnir a geta sr ess til a um geti veri a ra breytingar rafsvii ea uppstreymi lofttegunda eins og radons. Mlingar rafsvii hafa veri reyndar til a sp fyrir um skjlfta.

raun finnst mr a memli me Mrner ef hann hefur skoa hvort veri geti a essi gamla afer me prjnum styjist vi einhver elisfrilgml eins og breytingar rafsvii sem endurspegla t.d. sprungur irum jarar. Rafsvii loftinu umhverfis okkur er nefnilega furu flugt.

Sj t.d: Short-term Earthquake Prediction Based on Seismic Precursory Electric Signals Recorded on Ground Surface.

gst H Bjarnason, 6.4.2010 kl. 06:30

13 Smmynd: gst H Bjarnason

Magns. spyr mig spurninga sem g hef ekkert vit .

Breytingar sjvarbori undanfarinna ra og alda blikna samanburi vi hkkunina sem var egar "sldinni" lauk, eins og sst mefylgjandi mynd.

File:Post-Glacial Sea Level.png

gst H Bjarnason, 6.4.2010 kl. 07:00

14 Smmynd: Sveinn Atli Gunnarsson

Best a bta aeins meiri upplsingum um Mrner af essari Ad-Hominem su gst. Tilgangurinn er aeins a sna fram a maurinn er ekki srfringur sjvarstubreytingum (a er nokku mikilvgt), etta dowsing dmi s n bara aukaatrii v. a er nefnilega ekki sama hvar maur fr heimildir snar, a er a sem g er a draga fram... En hr kemur meira um ennan Mrner:

Morner and the NRSP

Listed as an "allied expert" for a Canadian group called the "Natural Resource Stewardship Project," (NRSP) a lobby organization that refuses to disclose it's funding sources. The NRSP is led by executive director Tom Harris and Dr. Tim Ball. An Oct. 16, 2006 CanWest Global news article on who funds the NRSP, it states that "a confidentiality agreement doesn't allow him [Tom Harris] to say whether energy companies are funding his group."

...uncovered information that two of the three directors on the board of the Natural Resources Stewardship Project are registered energy industry lobbyists and senior executives of the High Park Advocacy Group, a Toronto-based lobby firm that specializes in “energy, environment and ethics.”

Sveinn Atli Gunnarsson, 6.4.2010 kl. 08:35

15 Smmynd: gst H Bjarnason

nvember 2004 hlt Dr. Nils-Axel Mrner prfessor vi Hsklann Stokkhlmi erindi Hskla slands sem nefndist Heimskautin, hafi og framtin. Erindi var vegum Flags slenskra veurfringa. Myndin er fr eim fundi.

Erindi var annig kynnt vef Hsklans:

Heimskautin, hafi og framtin. Nils-Axel Mrner prfessor vi Hsklann Stokkhlmi. Mnudaginn 8. nvember, kl. 12.00 - Lgbergi (stofu 103).

Hefbundinn skilningur manna hlnun andrmsloftsins gerir r fyrir a hn muni leia til brnunar sbreium heimskautanna og hkkandi stu sjvar. Hverjar eru vsbendingarnar sem styja etta mat? Er hugsanlegt a almenningur s afvegaleiddur um essi ml? Nils-Axel Mrner prfessor vi Stokkhlmshskla og vkunnur srfringur jarfri kvartertmabilsins og landmtunarfri mun fjalla um essi litaefni fundi vegum Flags slenskra veurfringa mnudaginn 8. nvember 2004. Mrner var formaur nefndar um breytingar sjvarh og run strandsva, sem starfar vegum International Association of Quaternary Research, runum 1999-2003. Hann mun gagnrna lkn sem sp fyrir um hkkun sjvar og nota til ess rannsknarggn va a r heiminum.

Moerner-3A

Ekki veit g hvers vegna Flag veurfringa st a essum fundi, en eir hafa vntanlega s stu til ess. g mtti sem leikmaur fundinn og hafi bi gagn og gaman af.

Mrner hefur veri mjg gagnrninn sjvarstumlingar eins og lesa m hr. Hvort hann hefur rtt fyrir sr er svo anna ml sem g treysti mr ekki til a hafa skoun .

Tluverar umrur um karlinn bloggsu 26. jn 2007.

gst H Bjarnason, 6.4.2010 kl. 08:55

16 Smmynd: rni Gunnarsson

Sjaldan hef g n veri sammla ykkur sunarfasistum hflausrar grgi og aukinnar neyslu fyrir hagvxtinn.

En g skal jta a g s ekki arna fallegu og frislu eyju kyrrar og frumstrar fegurar sem g hafi gert mr hugarlund.

arna er greinilega ekki horft til sjlfbrrar ntingar gjfum nttrunnar.

Forsetinn virist vera vel menntaur og siaaur ungur maur og g undrast etta allt.

g tek undir a a lklegast finnst mr a ll essi steypugredda s a skkva essum skerjum niur dpi hins eilfa hagvaxtar.

rni Gunnarsson, 6.4.2010 kl. 09:15

17 Smmynd: Sveinn Atli Gunnarsson

J, etta er undarlegt ljsi ess a karlinn er ekki srfringur og hefur ekki gefi t neitt ritrnt efni um etta efni um efni..."srfringur jarfri kvartertmabilsins og landmtunarfri"

Ekki a a hann hafi ekki geta ori sr ti um einhverja ekkingu vi a sitja nefnd um efni, en hann er ekki vsindamaur v svii og hefur frekar vafasama tengingu vi "Natural Resource Stewardship Project," (NRSP). a gti nttrulega hafa komi til sar...

Mig langai bara a benda a...

Sveinn Atli Gunnarsson, 6.4.2010 kl. 09:18

18 Smmynd: Sveinn Atli Gunnarsson

Hr er listi yfir ritrndar vsindagreinar um sjvarstu, fyrir sem vilja kynna sr mli nnar:

Contemporary Sea Level Rise – Cazenave & Llovel (2010) A review article. “Here we report on most recent results on contemporary sea level rise. We first present sea level observations from tide gauges over the twentieth century and from satellite altimetry since the early 1990s. We next discuss the most recent progress made in quantifying the processes causing sea level change on timescales ranging from years to decades, i.e., thermal expansion of the oceans, land ice mass loss, and land water–storage change. We show that for the 1993–2007 time span, the sum of climate-related contributions (2.85 0.35 mm year?1) is only slightly less than altimetry-based sea level rise (3.3 0.4 mm year?1): 30% of the observed rate of rise is due to ocean thermal expansion and 55% results from land ice melt. Recent acceleration in glacier melting and ice mass loss from the ice sheets increases the latter contribution up to 80% for the past five years.”

A new assessment of the error budget of global mean sea level rate estimated by satellite altimetry over 1993–2008 – Ablain et al. (2009) “A new error budget assessment of the global Mean Sea Level (MSL) determined by TOPEX/Poseidon and Jason-1 altimeter satellites between January 1993 and June 2008 is presented using last altimeter standards. We discuss all potential errors affecting the calculation of the global MSL rate. … These new calculations highlight a reduction in the rate of sea level rise since 2005, by ~2 mm/yr. This represents a 60% reduction compared to the 3.3 mm/yr sea level rise (glacial isostatic adjustment correction applied) measured between 1993 and 2005. Since November 2005, MSL is accurately measured by a single satellite, Jason-1. However the error analysis performed here indicates that the recent reduction in MSL rate is real.” [Full text]

Anthropogenic forcing dominates sea level rise since 1850 – Jevrejeva et al. (2009) “Here we use a delayed response statistical model to attribute the past 1000 years of sea level variability to various natural (volcanic and solar radiative) and anthropogenic (greenhouse gases and aerosols) forcings. We show that until 1800 the main drivers of sea level change are volcanic and solar radiative forcings. For the past 200 years sea level rise is mostly associated with anthropogenic factors. Only 4 1.5 cm (25% of total sea level rise) during the 20th century is attributed to natural forcings, the remaining 14 1.5 cm are due to a rapid increase in CO2 and other greenhouse gases.”

An anomalous recent acceleration of global sea level rise – Merrifield et al. (2009) “The average global sea level trend for the time segments centered on 1962 through 1990 is 1.5 0.5 mm yr?1 (standard error), in agreement with previous estimates of late 20th century sea level rise. After 1990, the global trend increases to the most recent rate of 3.2 0.4 mm yr?1, matching estimates obtained from satellite altimetry. The acceleration is distinct from decadal variations in global sea level that have been reported in previous studies. Increased rates in the tropical and southern oceans primarily account for the acceleration. The timing of the global acceleration corresponds to similar sea level trend changes associated with upper ocean heat content and ice melt.”

Improved estimates of upper-ocean warming and multi-decadal sea-level rise – Domingues et al. (2008) “Our ocean warming and thermal expansion trends for 1961–2003 are about 50 per cent larger than earlier estimates but about 40 per cent smaller for 1993–2003, which is consistent with the recognition that previously estimated rates for the 1990s had a positive bias as a result of instrumental errors. … We add our observational estimate of upper-ocean thermal expansion to other contributions to sea-level rise and find that the sum of contributions from 1961 to 2003 is about 1.560.4mm yr-1, in good agreement with our updated estimate of near-global mean sea-level rise (using techniques established in earlier studies) of 1.660.2mm yr-1.” [Full text]

Understanding global sea levels: past, present and future – Church et al. (2008) “While sea levels have varied by over 120 m during glacial/interglacial cycles, there has been little net rise over the past several millennia until the 19th century and early 20th century, when geological and tide-gauge data indicate an increase in the rate of sea-level rise. Recent satellite-altimeter data and tide-gauge data have indicated that sea levels are now rising at over 3 mm year?1. The major contributions to 20th and 21st century sea-level rise are thought to be a result of ocean thermal expansion and the melting of glaciers and ice caps.” [Full text]

Recent global sea level acceleration started over 200 years ago? – Jevrejeva et al. (2008) “We present a reconstruction of global sea level (GSL) since 1700 calculated from tide gauge records and analyse the evolution of global sea level acceleration during the past 300 years. We provide observational evidence that sea level acceleration up to the present has been about 0.01 mm/yr2 and appears to have started at the end of the 18th century. Sea level rose by 6 cm during the 19th century and 19 cm in the 20th century. Superimposed on the long-term acceleration are quasi-periodic fluctuations with a period of about 60 years. If the conditions that established the acceleration continue, then sea level will rise 34 cm over the 21st century. Long time constants in oceanic heat content and increased ice sheet melting imply that the latest Intergovernmental Panel on Climate Change (IPCC) estimates of sea level are probably too low.” [Full text]

A 20th century acceleration in global sea-level rise – Church & White (2006) “Multi-century sea-level records and climate models indicate an acceleration of sea-level rise, but no 20th century acceleration has previously been detected. … Here, we extend the reconstruction of global mean sea level back to 1870 and find a sea-level rise from January 1870 to December 2004 of 195 mm, a 20th century rate of sea-level rise of 1.7 0.3 mm yr?1 and a significant acceleration of sea-level rise of 0.013 0.006 mm yr?2. This acceleration is an important confirmation of climate change simulations which show an acceleration not previously observed.” [Full text]

Rapid sea-level rise in the North Atlantic Ocean since the first half of the nineteenth century – Gehrels et al. (2006) “A high-resolution late-Holocene sea-level record is produced from salt-marsh deposits at Vioarhlmi in Snfellsnes, western Iceland. … Our reconstruction indicates that relative sea level along the coast of western Iceland has risen by about 1.3 m since c. AD 100. The detrended sea-level record shows a slow rise between AD 100 and 500, followed by a slow downward trend reaching a lowstand in the first half of the nineteenth century. This falling trend is consistent with a steric change estimated from reconstructions of sea-surface and sea-bottom temperatures from shelf sediments off Northern Iceland. The sea-level record shows a marked recent rise of about 0.4 m that commenced AD 182020 as dated by palaeomagnetism and Pb produced by European coal burning. This rapid sea-level rise is interpreted to be related to global temperature rise. The rise has continued up to the present day and has also been measured, since 1957, by the Reykjavik tide gauge.”

Coupling instrumental and geological records of sea-level change: Evidence from southern New England of an increase in the rate of sea-level rise in the late 19th century – Donnelly et al. (2004) “We construct a high-resolution relative sea-level record for the past 700 years by dating basal salt-marsh peat samples above a glacial erratic in an eastern Connecticut salt marsh, to test whether or not the apparent recent acceleration in the rate of sea-level rise (SLR) is coeval with climate warming. The data reveal an average SLR rate of 1.0 0.2 mm/year from about 1300 to 1850 A.D. Coupling of the regional tide-gauge data (1856 to present) with this marsh-based record indicates that the nearly three-fold increase in the regional rate of SLR to modern levels likely occurred in the later half of the 19th century. Thus the timing of the observed SLR rate increase is coincident with the onset of climate warming, indicating a possible link between historic SLR increases and recent temperature increases.” [Full text]

Mass and volume contributions to twentieth-century global sea level rise – Miller & Douglas (2004) “We find that gauge-determined rates of sea level rise, which encompass both mass and volume changes, are two to three times higher than the rates due to volume change derived from temperature and salinity data. Our analysis supports earlier studies that put the twentieth-century rate in the 1.5–2.0 mm yr-1 range, but more importantly it suggests that mass increase plays a larger role than ocean warming in twentieth-century global sea level rise.” [Full text]

The Puzzle of Global Sea-Level Rise – Douglas & Peltier (2002) “Global sea level (GSL) embodies many aspects of the global hydrological cycle and reflects the heat content of the oceans because the density of sea water depends on temperature. GSL is therefore a potent indicator of climate change and a key observational constraint on climate models.” [Full text]

Global Sea Level Acceleration – Douglas (1992) “Greenhouse warming scenarios commonly forecast an acceleration of sea level rise in the next 5 or 6+ decades in the range 0.1–0.2 mm/yr2. … Thus there is no evidence for an apparent acceleration in the past 100+ years that is significant either statistically, or in comparison to values associated with global warming. … This means that tide gauges alone cannot serve as a leading indicator of climate change in less than at least several decades.”

Global Sea Level Rise – Douglas (1990) “The value for mean sea level rise obtained from a global set of 21 such stations in nine oceanic regions with an average record length of 76 years during the period 1880–1980 is 1.8 mm/yr 0.1. This result provides confidence that carefully selected long tide gauge records measure the same underlying trend of sea level and that many old tide gauge records are of very high quality.”

Global sea level rise and the greenhouse effect – Might they be connected? – Peltier & Tushingham (1989) “When the tide gauge data are filtered so as to remove the contribution of ongoing glacial isostatic adjustment to the local sea level trend at each location, then the individual tide gauge records reveal sharply reduced geographic scatter and suggest that there is a globally coherent signal of strength 2.4 + or – 0.90 millimeters per year that is active in the system. This signal could constitute an indication of global climate warming.”

Contribution of Small Glaciers to Global Sea Level – Meier (1984) “Observed long-term changes in glacier volume and hydrometeorological mass balance models yield data on the transfer of water from glaciers, excluding those in Greenland and Antarctica, to the oceans. The average observed volume change for the period 1900 to 1961 is scaled to a global average by use of the seasonal amplitude of the mass balance. These data are used to calibrate the models to estimate the changing contribution of glaciers to sea level for the period 1884 to 1975. Although the error band is large, these glaciers appear to account for a third to half of observed rise in sea level, approximately that fraction not explained by thermal expansion of the ocean.”

The estimation of ‘‘global’’ sea level change: A problem of uniqueness – Barnett (1984) “The study results suggest that it is not possible to uniquely determine either a global rate of change of SL or even the average rate of change associated with the existing (inadequate) data set. Indeed, different analysis methods, by themselves, can cause 50% variations in the estimates of SL trend in the existing data set. A signal/noise analysis suggests it should be easy to detect small, future changes in the SL trends estimated for the period 1930–1980. However, detection of theoretically predicted low-frequency signals (e.g., caused by CO2 warming) will be difficult in view of the huge, low-frequency, natural variability associated with glacial/tectonic processes.”

Global Sea Level Trend in the Past Century – Gornitz et al. (1982) “Data derived from tide-gauge stations throughout the world indicate that the mean sea level rose by about 12 centimeters in the past century. The sea level change has a high correlation with the trend of global surface air temperature. A large part of the sea level rise can be accounted for in terms of the thermal expansion of the upper layers of the ocean. The results also represent weak indirect evidence for a net melting of the continental ice sheets.” [Full text]

Historical sea level changes

The Phanerozoic Record of Global Sea-Level Change – Miller et al. (2005) “We review Phanerozoic sea-level changes [543 million years ago (Ma) to the present] on various time scales and present a new sea-level record for the past 100 million years (My). Long-term sea level peaked at 100 50 meters during the Cretaceous, implying that ocean-crust production rates were much lower than previously inferred.” [Full text]

Cenozoic Global Sea Level, Sequences, and the New Jersey Transect: Results From Coastal Plain and Continental Slope Drilling – Miller et al. (1998) “The New Jersey Sea Level Transect was designed to evaluate the relationships among global sea level (eustatic) change, unconformity-bounded sequences, and variations in subsidence, sediment supply, and climate on a passive continental margin. By sampling and dating Cenozoic strata from coastal plain and continental slope locations, we show that sequence boundaries correlate (within 0.5 myr) regionally (onshore-offshore) and interregionally (New Jersey-Alabama-Bahamas), implicating a global cause. … We conclude that the New Jersey margin provides a natural laboratory for unraveling complex interactions of eustasy, tectonics, changes in sediment supply, and climate change.” [Full text]

Deglacial sea-level record from Tahiti corals and the timing of global meltwater discharge – Bard et al. (1996) “Here we date fossil corals from Tahiti, which is far from plate boundaries (and thus is likely to be tectonically relatively stable) and remote from the locations of large former ice sheets. The resulting record indicates a large sea-level jump shortly before 13,800 calendar years BP, which corresponds to meltwater pulse 1A in the Barbados coral records. The timing of this event is more accurately constrained in the Tahiti record, revealing that the meltwater pulse coincides with a short and intense climate cooling event that followed the initiation of the Blling–Allerd warm period, but preceded the Younger Dryas cold event by about 1,000 years.”

Chronology of Fluctuating Sea Levels Since the Triassic – Haq et al. (1987) “An effort has been made to develop a realistic and accurate time scale and widely applicable chronostratigraphy and to integrate depositional sequences documented in public domain outcrop sections from various basins with this chronostratigraphic framework. A description of this approach and an account of the results, illustrated by sea level cycle charts of the Cenozoic, Cretaceous, Jurassic, and Triassic intervals, are presented.” [Full text]

Future sea level projections

Global sea level linked to global temperature – Vermeer & Rahmstorf (2009) “We propose a simple relationship linking global sea-level variations on time scales of decades to centuries to global mean temperature. This relationship is tested on synthetic data from a global climate model for the past millennium and the next century. When applied to observed data of sea level and temperature for 1880–2000, and taking into account known anthropogenic hydrologic contributions to sea level, the correlation is >0.99, explaining 98% of the variance. For future global temperature scenarios of the Intergovernmental Panel on Climate Change’s Fourth Assessment Report, the relationship projects a sea-level rise ranging from 75 to 190 cm for the period 1990–2100.” [Full text]

Reconstructing sea level from paleo and projected temperatures 200 to 2100 ad – Grinsted et al. (2009) “We use a physically plausible four parameter linear response equation to relate 2,000 years of global temperatures and sea level. … Over the last 2,000 years minimum sea level (?19 to ?26 cm) occurred around 1730 ad, maximum sea level (12–21 cm) around 1150 ad. Sea level 2090–2099 is projected to be 0.9 to 1.3 m for the A1B scenario, with low probability of the rise being within IPCC confidence limits.” [Full text]

Reassessment of the Potential Sea-Level Rise from a Collapse of the West Antarctic Ice Sheet – Bamber et al. (2009) “We reassess the potential contribution to eustatic and regional sea level from a rapid collapse of the ice sheet and find that previous assessments have substantially overestimated its likely primary contribution. We obtain a value for the global, eustatic sea-level rise contribution of about 3.3 meters, with important regional variations.”

Kinematic Constraints on Glacier Contributions to 21st-Century Sea-Level Rise – Pfeffer et al. (2008) “We consider glaciological conditions required for large sea-level rise to occur by 2100 and conclude that increases in excess of 2 meters are physically untenable. We find that a total sea-level rise of about 2 meters by 2100 could occur under physically possible glaciological conditions but only if all variables are quickly accelerated to extremely high limits. More plausible but still accelerated conditions lead to total sea-level rise by 2100 of about 0.8 meter.”

A Semi-Empirical Approach to Projecting Future Sea-Level Rise – Rahmstorf (2006) “A semi-empirical relation is presented that connects global sea-level rise to global mean surface temperature. It is proposed that, for time scales relevant to anthropogenic warming, the rate of sea-level rise is roughly proportional to the magnitude of warming above the temperatures of the pre–Industrial Age. This holds to good approximation for temperature and sea-level changes during the 20th century, with a proportionality constant of 3.4 millimeters/year per C. When applied to future warming scenarios of the Intergovernmental Panel on Climate Change, this relationship results in a projected sea-level rise in 2100 of 0.5 to 1.4 meters above the 1990 level.” [Full text], [comment, Holgate et al. (2007)], [comment, Schmith et al. (2007)], [Rahmstorf response (2007)]

Sveinn Atli Gunnarsson, 6.4.2010 kl. 10:46

19 Smmynd: Vilhjlmur Eyrsson

Mr finnst grafi sem fylgir athugasemd nr. 13 srlega athyglisvert. Samkvmt v var sjvarstaa beinlnis lgri brelskum tma tt a s alveg ruggt og gjrsamlega umdeilt a var hiti miklu meiri en n, t.d. var sland sannanlega jklalaust a heita m og Sahara alveg umdeilanlega grin. Hvernig m a vera? Hvar er hkkun sjvarbors brealska tmanum. Spyr s sem ekki veit.

Vilhjlmur Eyrsson, 6.4.2010 kl. 15:40

20 Smmynd: gst H Bjarnason

Vilhjlmur.

Hr er nnur mynd:

http://upload.wikimedia.org/wikipedia/commons/1/1e/Holocene_Sea_Level.png

This figure shows changes in sea level during the Holocene, the time following the end of the most recent glacial period, based on data from Fleming et al. 1998, Fleming 2000, & Milne et al. 2005. These papers collected data from various reports and adjusted them for subsequent vertical geologic motions, primarily those associated with post-glacial continental and hydroisostatic rebound. The first refers to deformations caused by the weight of continental ice sheets pressing down on the land, the latter refers to uplift in coastal areas resulting from the increased weight of water associated with rising sea levels. It should be noted that because of the latter effect and associated uplift, many islands, especially in the Pacific, exhibited higher local sea levels in the mid Holocene than they do today. Uncertainty about the magnitude of these corrections is the dominant uncertainty in many measurements of Holocene scale sea level change.

The black curve is based on minimizing the sum of squares error weighted distance between this curve and the plotted data. It was constructed by adjusting a number of specified tie points, typically placed every 1 kyr and forced to go to 0 at the modern day. A small number of extreme outliers were dropped. It should be noted that some authors propose the existence of significant short-term fluctuations in sea level such that the sea level curve might oscillate up and down about this ~1 kyr mean state. Others dispute this and argue that sea level change has been a smooth and gradual process for essentially the entire length of the Holocene. Regardless of such putative fluctuations, evidence such as presented by Morhange et al. (2001) suggests that in the last 10 kyr sea level has never been higher than it is at present.

Sj: http://en.wikipedia.org/wiki/File:Holocene_Sea_Level.png

gst H Bjarnason, 6.4.2010 kl. 16:04

21 Smmynd: Vilhjlmur Eyrsson

g s af hinu strhugavera og merkilega vitali vi Mrner a mig hefur misminnt hr a ofan egar g talai um Seychelle- eyjar. arna hefur danska ttinum veri tt vi Mrner og Maldiveeyjar. vitalinu kemur margt frlegt fram um IPCC og r aferir sem tlvulkanasmiirnir ar beita me „leirttum“ tlum snum. En g spyr aftur eins og hr a ofan: Hvar er hkkun sjvarmls brelskum tma fyrir ca. sj sund rum egar hiti var hrri en allra „svartsnustu“ tlvuspr grurhsamanna gera r fyrir?

Vilhjlmur Eyrsson, 6.4.2010 kl. 16:09

23 Smmynd: Vilhjlmur Eyrsson

Nei, v miur. S mynd var dnsk og ger af danska sjnvarpinu, en mjg hugaver.

Vilhjlmur Eyrsson, 6.4.2010 kl. 16:30

24 Smmynd: Vilhjlmur Eyrsson

g vil lka akka r fyrir a benda myndina hr a ofan sem er aldeilis frbr og tti a vera skylduhorf fyrir Hska Ba, Svatla og k, samt vitalinu vi Mrner.

Vilhjlmur Eyrsson, 6.4.2010 kl. 17:13

25 Smmynd: Vilhjlmur Eyrsson

g vil aftur bta vi eftir a hafa horft myndina alla, a RV tti a sj sma sinn a sna hana sem fyrst og gum tsendingartma. ar b hafa v miur grurhsamenn grafi um sig og virast hafa ll vld.

Vilhjlmur Eyrsson, 6.4.2010 kl. 17:50

26 Smmynd: Sveinn Atli Gunnarsson

Fnt graf athugasemd 20, sem snir okkur a sjvarstaa hefur breyst ur. g hef aldrei haldi ru fram kru efahyggjumenn...

Mr dettur ekki til hugar a myndir eins og Doomsday Called off ea svo nnur lka s nefnd, The Great Global Swindel, su gar heimildir um loftslagsvsindi. gtis vital vi karlinn, ar sem tr sem stendur eitt og sr og hauskpa strnd virast vera hans sterkustu rk fyrir v a sjvarstaa fari ekki hkkandi ( heimsvsu?)...en a er nttrulega miki betra en mlingar annarra vsindamanna...engin spurning a hann hltur a vita etta allt...vi getum gleymt llum rum rannsknum og mlingum eftir a hafa horft etta

Reyndar ber a taka a fram a a er ekki gert r fyrir jafnri hkkun sjvar yfir allan heiminn spm um hkkun sjvarbors. a eru straumar og fleira sem skiptir mli eim efnum, sem geta haft stabundin hrif, jafnvel til lkkunar sjvarbors (til skemmri tma), sj t.d. http://www.e360.yale.edu/content/feature.msp?id=2255

PS. Vilhjlmur, tli Rv hafi ekki brennt sig a hafa snt rangfrslumyndina The Global Warming Swindel hr um ri...

Sveinn Atli Gunnarsson, 6.4.2010 kl. 18:59

27 Smmynd: Vilhjlmur Eyrsson

Eins og fram kemur vitalinu vi Mrner fr etta tr svo miki taugarnar strlskum grurhsatrarmnnum, sem mttu svi skmmu sar a eir rifu a upp me rtum og fjarlgu alveg. a snir enn einu sinni hvers konar aferum er beitt essu mli.

Vilhjlmur Eyrsson, 6.4.2010 kl. 20:07

28 Smmynd: gst H Bjarnason

Bara a minna a essi gta kvikmynd var ur birt hr blogginu aprl 2007. Sj hr:

Doomsday Called Off og Climate Catastrophe Cancelled. Tvr hugaverar kvikmyndir um loftslagsbreytingar.

gst H Bjarnason, 6.4.2010 kl. 20:17

29 Smmynd: Sveinn Atli Gunnarsson

J kri gst, hefur haldi essari kvikmynd lofti ur...ekki verur hn betri vi a...

Sveinn Atli Gunnarsson, 6.4.2010 kl. 20:47

30 Smmynd: gst H Bjarnason

gti Svatli.

ar sem ert svona einstaklega hugasamur um essa frbru mynd og flki sem kemur fram henni, tla g a gefa henni stjrnur. Hn hltur a eiga skili svo sem fimm mia vi undirtektirnar sem hn fr.

Svatli. Takk fyrir a auglsa myndina svona vel og vekja forvitni flks.

*****





gst H Bjarnason, 6.4.2010 kl. 20:56

31 Smmynd: Sveinn Atli Gunnarsson

J veri r a gu gst. Ef flk vill f a sj rur efahyggjunar llu snu ljsi, snir essi mynd a mjg vel. g mli me a flk skoi etta me opnum huga og hugsi kjlfari. Ekki vri verra a skoa heimildir, ef r eru nefndar...og svo er hgt a skoa hva vsindin hafa a segja um mli, get mlt me Loftslag.is til ess

Sveinn Atli Gunnarsson, 6.4.2010 kl. 21:20

32 Smmynd: Magns Jnsson

Ja hrna maur kemur ekki a tmum kofanum essari su, n hef g lesml og myndir til a skoa nstu vikurnar, en samt eru allt of margir ttir ektir myndinni um stu sjvar, velta m v fyrir sr hvort sustu 10,000 r eru ekki bara tmabundin hitasveifla rkjandi sld, orsakavaldar eru svo margir a nnast tiloka er a sl neinu fstu um hkkun ea lkkun, nema a standa sjlfur fjrunni og mla hnnu sr sjfarsstuna ( svona eins og essi me priki), allt hreyfist engan fastan punkt er a hafa,vindurinn feykir heilu fjllunum haf t, vatni skolar v sem vindurinn missir til sjfar, allt telur, manskepnaner lklega eina dri sem hefur breyt hlutfllunum, velti fyrir ykkur llum nmugreftrinum, og ekki bara efnistku heldur tilfrslum vigt, uppistuln og veitur eins og sem er a urrka upp Aralvatn, a bara hltur a breyta einhverju, anna er hugsandi.

Magns Jnsson, 6.4.2010 kl. 21:37

33 Smmynd: Jn Steinar Ragnarsson

Annars talandi um heimildarmyndir um efni, vil g benda ljmandi fallega og nokku mlefnalega mynd um run mla og framtarrni heiminn. a skal enginn efast um a a maurinn hefur hrif umhverfi til hins verra, en getur me skynsemi sni vrn skn. ar er essi raganrrakaspdmur um 7 metra hkkun sjvarbors orin marginal og raunar eru a eingngu ofsatrarmenn og ttaprangarar, sem halda essu lofti enn. eir ttu kannski a eya orkunni a hugsa t vistvnni lifna og ntingu og koma annig a gagni. g er spurur a v hr a ofan hvort g haldi virkilega a vsindamenn taki ekki inn alla tti mlingum snum. 'eg leyfi mr a efast af v a etta er augljslega umdeilt enn. San hafa raskandalar loftslagsfasista ekki beint auki trausti. Fyrst vi erum bistui, vri ekki r vegi a skoa Nbelsmyndina hans Al Gore aftur. Hn er nnast eins og grnmynd dag. kjurnar og ofboslegheitina yfirgengileg. Al hefur komist miklar lnir fyrir viki og eftir hann munu liggja mikil og str kolefnisftspor sgunni.

Hr er annars myndin, sem g mli me. g er viss um a Svatli og co gera a raunar lka. Myndatakan er allavega mgnu, hva sem ru lur. The Home Project.

Jn Steinar Ragnarsson, 6.4.2010 kl. 23:01

34 Smmynd: Jn Steinar Ragnarsson

Muni a smella hnappinn arna nest til hgri myndbandinu til a horfa fulla mynd, .e.a.s. ef skjkorti ykkar rur vi a. Myndin hktir ef a er of lti svona upplausn. Engu a sur. etta er flott mynd hvaa formati sem er. Imaxtkur r loftbelg.

Jn Steinar Ragnarsson, 6.4.2010 kl. 23:13

35 Smmynd: Sveinn Atli Gunnarsson

Get lka mlt me essari mynd Jn Steinar, flott myndataka.

Reyndar er a orum auki a a hafi veri miklar spr um 7 metra hkkun sjvarbors nstunni, t.d. talar IPCC um mesta lagi 59 cm fyrir 2100 (ess m geta a nverandi hkkun er um 3 mm ri, .e. 30 cm 100 rum). a mun v taka mjg langan tma fyrir jkla a brna a miki a 7 m sp geti ori raunin. Svona n ess a tla srstaklega a verja mynd Al Gore, sagi hann myndinni a "ef Grnlandsjkull myndi brna myndi sjvarbor hkka um 7 metra". etta er sjlfu sr rtt hj honum, en hann tiltk ekki a etta myndi gerast ninni framt, etta veri v a skoa me essu litla "ef" sem er fremst setningunni. a sem stundum er gert umrunni, er a fullyra um fullyringar ( essu tilfelli a Al Gore hafi fullyrt eitthva um a etta vri yfirvofandi framtarsn).

Svo m sjlfu sr velta fyrir sr hversu lti ea miki vi erum til a stta okkur vi sambandi vi hlnunina og run sem aukinn styrkur CO2 hefur hitastig og einnig hkkun sjvarbors...?

ess m geta a a virist vera sem essir "raskandalar" sem nefnir svo Jn Steinar, su afkvmi upphrpanna og rangfrslna, sj t.d. How the 'climategate' scandal is bogus and based on climate sceptics' lies

Sveinn Atli Gunnarsson, 6.4.2010 kl. 23:36

36 Smmynd: Hskuldur Bi Jnsson

vissan er mikil hva varar sjvarstuhkkanir. Eins og Sveinn bendir , spir IPCC allt a 59 sm hkkun sjvarstu til loka essarar aldar - aftur mti bendir margt til ess a a s vanmat, en flestar vsindagreinar sem birst hafa eftir a IPCC skrslan kom t, nefna tlur sem eru milli 1-2 m lok aldarinnar. a skal teki fram a hr er veri a ra mealsjvarstuhkkun yfir allan hnttinn, en eins og Sveinn segir athugasemd 26 (endilega lesi tengilinn ar, mjg hugavert efni ar), er margt sem spilar inn dmi ef maur skoar hlutina stabundi ( er g ekki bara a tala um landris og landsig). T.d. getur mikil brnun Grnlandsjkuls ori til ess a sjvarstaa lkkar hr vi land - mean mikil brnun Suurskautinu gti tt sjvarstuhkkun hr - etta eru mgnu fri og margt huldu me hvaa hrif vera mismunandi svum jarar.

Hskuldur Bi Jnsson, 6.4.2010 kl. 23:57

37 Smmynd: Vilhjlmur Eyrsson

g rlegg Hska Ba a lesa vitali vi Mrner sem er aljlega viurkenndur srfringur sjvarbors hkkun og lkkun. Hann lrir kannski eitthva ntt v.

Vilhjlmur Eyrsson, 7.4.2010 kl. 00:07

38 Smmynd: mar Bjarki Kristjnsson

J j. a er n svo.

Er essi Mrner ekki hlf sr parti svona heilt yfir - allaveg hin sari r. a eitt og sr arf auvita ekkert a vera slmt. En a er samt nokku tstandinga a taka fir, ef nokkur, vsindamenn undir fri hans ea tleggingar llu heldur.

Td. urfti stofnunin er hann var fv. forseti hj, srstaklega a gefa t yfirlsingu fyrir nokkurm rum egar hann haf fari til rsslands me fri sn:

"I am writing to inform you that Dr. Mrner has misrepresented his position with INQUA. Dr. Mrner was President of the Commission on Sea Level Change until July 2003, but the commission was terminated at that time during a reorganization of the commission structure of INQUA. Dr. Mrner currently has no formal position in INQUA, and I am distressed that he continues to represent himself in his former capacity. Further, INQUA, which is an umbrella organization for hundreds of researchers knowledgeable about past climate, does not subscribe to Mrner’s position on climate change. Nearly all of these researchers agree that humans are modifying Earth’s climate, a position diametrically opposed to Dr. Mrner’s point of view.

http://www.environmentaldefense.org/documents/3868_morner_exposed.pdf

Miklu hugaverari skrif hans varandisvokalladowsing. Menn skulu pla v frekar.

mar Bjarki Kristjnsson, 7.4.2010 kl. 01:34

39 Smmynd: gst H Bjarnason

essi pistill tti n a snast um mjg breytta landntingu eyjunni Male Maldv eyjaklasanum., .e. hfuborg eyjanna ar sem 100.000 manns hefur veri jappa saman hhsi rsmu kralrifi sem er aeins 2 ferklmetrar, ea 2 km lengd og 1 km breidd.

g var a velta fyrir mr hvort essir fgar gtu ekki tt sinn tt v a ramenn telji a sjvarbor hafi hkka rt, egar raun geti jafnvel veri um landsig af mannavldum a ra.

essum tti mlsins virast menn hafa takmarkaan huga, og eins og venjulega, egar minnst er eitthva sem tengst getur loftslagsmlum ( aukaatrii s) fer umran t og suur, og lengra en a. Menn fara jafnvel a sverta mannor vsindamanna. a ykir mr synd og skmm og vera vikomandi til mikillar minnkunar.

Hva finnst mnnum um efni pistilsins, .e. essar fgar sem blasa vi myndinni? Telja menn a jafnvel a a reisa svona borg landi sem reis aeins um 1,5 metra a mealtali yfir sjvarbor vera til fyrirmyndar og skynsamlegt?

g get svara fyrir mig: Mr finnst etta mjg skynsamlegt og jafnvel frnlegt. g er nokku sammla v sem rni Gunnarsson skrifar #16. A troa 100.000 manns landsvi sem er lka strt og Seltjarnarnesi (grf mling Borgarvefsjnni http://arcgis.reykjavik.is/borgarvefsja/) hltur a bja httunni heim. svo a "Seltjarnarnesi s lti og lgt", er a sam miklu hrra en Maldveyjar.

gst H Bjarnason, 7.4.2010 kl. 05:53

40 Smmynd: Sveinn Atli Gunnarsson

gst: g get teki undir me r a etta er ansi rngt byggt Maldv, en a sjlfu sr hefur ekkert me stareynd a gera a sjvarstaa hkkar um ca. 3 mm ri, sem eru 30 cm 100 rum.

nefnir sjlfur Maldv pistlinum og nefnir sjvarstuhkkanir heimsvsu og kejar etta saman einhvern undarlegan htt...allt nafni efahyggjunnar bst g vi. g held a a megi vel koma fram hvaa vsindi ert a vitna til (ea bmyndir sumum tilvikum), v a virist vera mikilvgt num mlflutningi...mikilvgara en ggn annarra vsindamanna (t.d. hj NASA) a nu mati. Srval gagna (cherry picking) virist vera aalsmerki eirra sem stunda efahyggju eins og hr er stundu og er a er eitt sem er mikilvgt a a komi fram, a mnu mati. Lesendur nir eiga a til a vitna ig sem einhverskonar gr loftslagsfrum og .a.l. er mikilvgt a eir tti sig vinnubrgunum og hvernig val heimilda og annarra gagna (ea bmynda sumum tilvikum) fer fram.

Sveinn Atli Gunnarsson, 7.4.2010 kl. 08:04

41 Smmynd: gst H Bjarnason

gst H Bjarnason, 7.4.2010 kl. 08:29

42 Smmynd: Hskuldur Bi Jnsson

Aalatrii varandi Mrnerhltur a vera a a hann er hrplegu samrmi vi meginorra vsindamanna sjvarstubreytingum.

A sama skapi hltur a a vera samrmi hj gsti egar hann snir mynd frslu sinnisem snir greinilegar sjvarstuhkkanir og smu frslu virist hann vera a upphefja Mrner sem segir a engar sjvarstuhkkanir suog vsar grein eftir hann fr 2004. a tti a vera htt a benda a a bi er a hrekja grein Mrners sem a gst vsar , sj svar vi henni, en ar er lokaniurstaan essi:

"We conclude that the sea level history and data presented by Mrner et al., 2004 NA. Mrner, M. Tooley and G. Pssnert, New perspectives for the future of the Maldives, Global and Planetary Change 40 (2004), pp. 177–182. Mrner et al. (2004) is less than compelling and can be readily explained via an understanding of contemporary coastal processes. The region's sea level history remains uncertain. Consequently, we believe that this work does little to inform the international community on new perspectives of the future of the Maldives."

Hskuldur Bi Jnsson, 7.4.2010 kl. 08:42

43 Smmynd: gst H Bjarnason

Pistillinn er ekki langur.

g erfitt me a skilja hvernig menn geta lesi svona stuttan texta gjrsamlega skjn.

gst H Bjarnason, 7.4.2010 kl. 08:48

Bta vi athugasemd

Ekki er lengur hgt a skrifa athugasemdir vi frsluna, ar sem tmamrk athugasemdir eru liin.

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Ágúst H Bjarnason
Ágúst H Bjarnason

Verkfr. hjá Verkís.
agbjarn-hjá-gmail.com

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Aðeins málefnalegar athugasemdir, sem eiga ótvíætt við efni viðkomandi pistils, og skrifaðar án skætings og neikvæðni í garð annarra, og að jafnaði undir fullu nafni, verða birtar. 

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