Bloggfęrslur mįnašarins, maķ 2009
Žrišjudagur, 26. maķ 2009
Er mikil eša lķtil fylgni milli koltvķsżrings og lofthita jaršar? Hvers vegna var magn CO2 grķšarlegt įšur fyrr?
Svarti ferillinn sżnir styrk koltvķsżrings ķ andrśmsloftinu sķšastlišin 600 milljón įr. Eftirtektarvert er hve mikill hann hefur veriš meirihluta tķmans, ž.e. miklu meiri en ķ dag. Ķ dag er magniš um 380 ppm (um 4 mólekśl af hverjum 10.000), en fyrir um 550 milljón įrum hefur styrkurinn veriš um 20 sinnum meiri en fyrir upphaf išnbyltingarinnar, en žį var styrkurinn um 280 ppm. Žaš mį greina į ferlimum lengst til hęgri.
Blįi ferillinn sżnir hitastig lofthjśps jaršar.
Hvernig ętli standi į žvķ aš hitastigiš er ekki ķ takt viš magn koltvķsżrings?
Hvers vegna rauk hitastig lofthjśpsins ekki upp śr öllu valdi?
Hvers vegna hefur styrkur koltvķsżrings (CO2) veriš svona grķšarmikill?
Hvaša įhrif hafši žetta į lķfrķki jaršar?
Sjį žessa ritrżndu grein eftir Robert A Berner prófessor viš Yale hįskóla.
Geocarb III: A Revised Model of Atmospheric CO2 over Phanerozoic Time
http://earth.geology.yale.edu/~ajs/2001/Feb/qn020100182.pdf
http://www.ajsonline.org/cgi/content/abstract/301/2/182
Robert A. Berner and Zavareth Kothavala
Department of Geology and Geophysics, Yale University, New Haven, Connecticut 06520-8109
Myndin hér fyrir nešan er śr greininni.
RCO2 į lóšrétta įsnum er hlutfallslegt magn CO2 mišaš viš žaš sem er nś. "RCO2=The ratio of mass of CO2 at time t to that at present (t=0)". Semsagt, magn CO2 hefur ķ jaršsögunni nįš yfir 20 sinnum meira en aš undanförnu, og yfirleitt veriš verulega meiri, a.m.k. mišaš viš sķšastlišin 600 milljón įr.
Hitaferillinn į efstu myndinni er samkvęmt Christopher R Scotese
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Ķ fyrirsögn pistilsins spurši sį sem ekki veit:
Er mikil eša lķtil fylgni milli koltvķsżrings og lofthita jaršar? Hvers vegna var magn CO2 grķšarlegt įšur fyrr?
Vķsindi og fręši | Breytt s.d. kl. 06:59 | Slóš | Facebook | Athugasemdir (28)
Föstudagur, 15. maķ 2009
Leyndardómur skżjanna ķ loftslagsbreytingum... Myndbönd.
Ķ žessari fróšlegu dönsku kvikmynd The Cloud Mystery er fjallaš um hinar nżstįrlegu kenningar Henriks Svensmark um mögulegar įstęšur loftslagsbreytinga. Myndin er yfirleitt meš ensku tali en dönskum texta. Stundum öfugt... Myndin er frį įrinu 2008.
Myndin er mjög vel gerš og aušskilin. Žeir sem įnęgju hafa af undurfögrum myndum af himingeimnum verša ekki fyrir vonbrigšum.
The Cloud Mystery er frį DR - Danmarks Radio. Sjį hér.
Ķ myndinni koma fram nokkrir žekktir vķsindamenn. Sjį hér.
Um kenninguna. Sjį hér
Um žessa merkilegu kenningu er fjallaš ķ bloggpistlinum frį 20. feb. 2007 Byltingarkennd kenning dansks vķsindamanns skekur vķsindaheiminn. Žar er kenningin śtskżrš į einfaldan hįtt ķ eins konar "5 mķnśtna nįmskeiši". Einnig var bloggaš um mįliš 1. janśar 2007 ķ pistlinum Merkileg tilraun: Geimgeislar, skż og loftslagsbreytingar. Bloggarinn skrifaši reyndar fyrst um žessa kenningu fyrir 11 įrum eša įriš 1998, sjį hér og hér.
Hvaš er eiginlega svona merkilegt viš žessa "byltingarkenndu kenningu", spyr vęntanlega einhver.
Skošiš myndina vinstra megin.
Rauši ferillin er geimgeislar, en styrkur žeirra mótast af breytilegri virkni sólar.
Blįi ferillin er žéttleiki skżjahulunnar upp ķ 3,2 km hęš, skv. skżjamyndum śr gervihnöttum.
Takiš eftir hve ótrśleg samsvörun er milli ferlanna.
Skżjahulan er breytileg eftir virkni sólar, og skżin virka sem gluggatjöld sem opnast örlķtiš žegar virkni sólar eykst, en lokast žegar virkni sólar minnkar.
Takiš eftir hve mikil breyting ķ skżjahulu žetta er. Breytingin er um 2% sem getur breytt orkuinnstreymi sólar um 1,2 wött į fermetra, og žaš ašeins męlt yfir eina sólsveiflu, eša 11 įr. Nś žekkja menn nokkun vegin breytingu ķ styrk geimgeisla undanfarnar aldir. Hafi žeir haft višlķka įhrif į skżjafar mį mį įętla aš žaš hafi breyst um 3% yfir frį lokum Litlu ķsaldar og orkuinnstreymiš (forcing) um 2 W/m2 (wött į fermetra). Žaš vęri ķ sjįlfu sér nóg til aš śtskżra alla hękkun hitastigs frį Litlu ķsöldinni til vorra daga. (Meira hér).
Aš sjįlfsögšu er žetta ennžį tilgįta, en samt įkvešnar vķsbendingar. Įhugavert ķ meira lagi
Er žaš tilviljun aš ferlarnir falla svona vel saman? Kannski og kannski ekki...
Aušvitaš į eftir aš sannreyna žessa kenningu, en margir eru bjartsżnir. Žaš er full įstęša til aš fylgjast meš. Sumir vķsindamenn telja aš mikiš geti veriš til ķ Svensmark kenningunni, en ašrir ekki. Žaš gerir svosem ekkert til, "The great thing about science is that it's self correcting" er haft eftir Carl Sagan. Tilraun (SKY) sem lofar góšu hefur stašiš yfir um įrabil ķ Danmörku. CERN er aš undirbśa mikla tilraun (CLOUD) og er jafnvel von į nišurstöšum į nęsta įri. Sķšast en ekki sķst er nįttśran sjįlf aš gera mikla tilraun žessi įrin. Virkni sólar er nefnilega aš minnka, styrkur sólvindsins aš minnka og geimgeislar aš aukast. Skyldi skżjafariš einnig aukast?
Myndin fjallar ekki um hin svoköllušu gróšurhśsaįhrif, heldur um nįttśrulegar sveiflur.
Ķ kynningu Danmarks Radio segir:
The film that inconveniently could turn the climate debate upside down.
The Cloud Mystery is a scientific detective story. It tells how a Danish scientist, Henrik Svensmark, through pioneering experiments in a basement in Copenhagen, solved the mystery of how supernova explosions in our Galaxy and variations in the Sun govern climate changes on the Earth.
Henrik Svensmark has discovered a new kind of aerial chemistry - triggered off by events in our galaxy - that determine the magnitude of clouds in our atmosphere. His discovery introduces a paradigm shift in meteorology. Now we have to re-evaluate the causes of global warming.
A film crew has for 10 years documented how Henrik Svensmark struggles the to find the physical evidence of a celestial climate driver. The film demonstrates that science can be a rough place to be if you are in opposition to the established truth.
The Cloud Mystery is aimed at a wide audience. Astonishing pictures from our Galaxy , the Sun and cloud formations are mixed with spectacular animations to simplify the science. Comments by astronomers, geologists and climate experts will convey their sense of adventure, and give scientific weight to the discoveries presented.
Lars Oxfeldt Mortensen has produced and directed a number of international acclaimed documentaries. He is the winner of numerous awards including CirCom Regional, Monte Carlo and Télé Science.
Góš vefsķša sem fjallar um myndina er: www.thecloudmystery.com
Žar er m.a fjallaš um vķsindamennina sem koma fram ķ myndinni.
( Hafi Sjónvarpiš įhuga į žessari mynd frį Danmarks Radio žį er krękjan hér: DR International Sales.)
Vefsķša: UCLA
Skošašu nś myndbandiš vel og hlustašu į hvaš žessir virtu vķsindamenn segja. Skrifašu svo įlit žitt ķ athugasemdirnar!
Myndinni er skipt nišur ķ 6 myndbönd žar sem YouTube į erfitt meš aš sżna hana ķ einu lagi. Žaš hentar įgętlega aš skoša myndina ķ įföngum .
Smį brella: Ef myndbandiš hnökrar vegna žess aš sambandiš er hęgvirkt, žį er best aš setja žaš af staš og stöšva strax. Žį ętti žaš aš hlašast inn. Myndbandiš er sett aftur af staš žegar rauša strikiš nešst ķ myndfletinum er oršiš sęmilega langt...
Vilji mašur skoša myndbandiš ķ fullri stęrš, žį žarf aš fara į viškomandi YouTube sķšu meš žvķ aš smella į myndflötinn. Eftir žaš er hęgt aš lįta myndina fylla śt ķ skjįinn meš tįkninu sem er nešst til hęgri.
Įlit žitt...?
Vķsindi og fręši | Breytt 16.5.2009 kl. 06:08 | Slóš | Facebook | Athugasemdir (8)
Laugardagur, 9. maķ 2009
Hafķsinn į noršurslóšum ķ meira lagi...
Į vefsķšu IARC-JAXA Information System er žessi mynd sem sżnir śtbreišslu hafķssins į noršurslóšum 7. maķ 2009.
Rauši ferillinn er fyrir įriš 2009.
Nś ķ maķ er meiri hafķs heldur en ķ maķmįnuši įrin 2002, 2003, 2004, 2005, 2006, 2007 og 2008.
"The latest value: 12,853,750 km2 (May 7, 2009)", stendur viš myndina į vefsķšu IARC-JAXA.
Brrrr... kalt...
"The IARC-JAXA Information System (IJIS) is a geoinformatics facility for satellite image analysis and computational modeling/visualization in support of international collaboration in Arctic and global change research at the International Arctic Research Center in corporation with the Japan Aerospace Exploration Agency (JAXA)".
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En hafķsinn į sušurslóšum? Hvernig hefur hann veriš aš breytast sķšastlišna 3 įratugi?
Vķsindi og fręši | Breytt s.d. kl. 23:12 | Slóš | Facebook | Athugasemdir (23)
Fimmtudagur, 7. maķ 2009
Žegar veršbólgan į Ķslandi fór ķ 103%...
Frį įgśst 1982 til įgśst 1983, hękkaši vķsitalan um 103%, en žaš žżšir aš veršlag rķflega tvöfaldašist į tólf mįnušum!
Į žessu eina įri rżrnaši peningaeign manns um helming. Sį sem įtti peningasešil ķ įgśst 1982 gat keypt helmingi minna fyrir hann ķ įgśst 1983. 1000 krónur uršu į einu įri jafn veršmętar og 500 krónur įšur. Aš sjįlfsögšu töpušu margir grķšarlega miklu. Žeir sem höfšu t.d. nżlega selt ķbśšarhśsnęši og voru aš byggja eša kaupa nżtt töpušu miklu. Jafnvel öllu eigin fé.
Sunnudagur, 3. maķ 2009
Er aldingaršurinn Eden fundinn ķ Göbekli Tepe? 11.000 įra fornminjar...
Aušvitaš eru žetta bara vangaveltur, en getur veriš aš munnmęlasögur um aldingarš hafi lifaš mann fram af manni um aldir alda? Žarna var mjög frjósamt og gnęgš matar mešan menn stundušu veišar. Sķšan reistu menn hof og fluttu saman ķ žorp og fóru aš stunda landbśnaš. Felldu tré og runna til aš aušveldara vęri aš yrkja jöršina. Uppblįstur hófst og Paradķs var ekki lengur til stašar nema ķ munnmęlum.
Viš uppgröftinn hefur komiš ķ ljós aš menn hafa lagt į sig ómęlda vinnu fyrir 10.000 įrum til aš hylja žessar minjar meš sandi og jaršvegi. Hvers vegna? Fjölmargar spurningar hafa vaknaš og hugsanlega veršur žeim aldrei svaraš.
Langt og fróšlegt myndband sem bętt var viš sept. 2015
https://www.youtube.com/watch?v=eHG9URGDt6s
Ķtarefni:
Wikipedia: Göbekli Tepe
Smthsonian Magazine: Gobekli Tebe: The World's First Temple?
Tom Knox ķ Daily Mail: Do these mysterious stones mark the site of the Garden of Eden?
Fortean Times: Gobekli Tape - Paradise Regained? Vištal viš Klaus Schmidt.
Professor A. Cihat: History of civilization began in Urfa Began in Urfa (Gobekli, Turkey).
13,500 Year Old Statue Amazes Archeologists Throughout The World.
Gobekli Tepe: Where Civilization Began?
Archaeology Magazine. Sandra Scham: Turkey's 12,000-year-old stone circles were the spiritual center of a nomadic people
Vķsindi og fręši | Breytt 19.9.2015 kl. 18:44 | Slóš | Facebook | Athugasemdir (13)
Föstudagur, 1. maķ 2009
Grein um Benedikt S. Benedikz - (Bendķ) ķ The Times.
Fręndi minn Benedikt Siguršur Benedikz bókavöršur lést ķ Birmingham į Englandi 25. mars sl. Hann var įvallt kallašur Bendķ af fręndfólki sķnu.
Benedikt fęddist 4. aprķl 1932 ķ Reykjavķk, sonur Eirķks Benedikz og Margaret Benedikz. Benedikt stundaši nįm viš hįskólann ķ Oxford, Penbroke College, og lauk žašan MA-prófi 1958. Hann hlaut Diploma in Librarianship viš University College ķ Lundśnum 1959, fyrstur Ķslendinga. Hann varš sķšan dr. phil. frį hįskólanum ķ Birmingham 1979.
Benedikt vann viš hįskólabókasafniš ķ Durham 1959-67 og var kennari viš žann skóla. Hann var bókavöršur viš hįskólann ķ Ulster 1968-71. Frį 1973 til starfsloka var hann bókavöršur viš hįskólann ķ Birmingham og kenndi lķka handritafręši. Benedikt var félagi ķ lęrdómsfélögunum Society of Antiquaries og Royal Historical Society. Eftir hann liggja mörg rit, žżšingar og greinar.
Žegar Bendķ var aš alast upp dvaldist hann langdvölum hjį afa sķnum Benedikt S. Žórarinssyni (1861-1940) kaupmanni, bókasafnara, og heišursdoktor frį Hįskóla Ķslands. Vafalaust mį rekja hinn mikla bókaįhuga hans til žessara įra. Į heimili afa hans komu oft żmsir žekktir menn og var furšulegt aš heyra Bendķ į fulloršinsaldri herma eftir žeim og hafa yfir heilu samręšurnar, enda minniš óbrigšult. Żmis ęvintżri sem hann hafši lesiš sem barn kunni hann nįnast utanbókar.
Žó aš hann byggi ķ Englandi nęrri allt sitt lķf lét hann sér mjög annt um ķslensk bóka- og handritasöfn og žį sérstaklega Benediktssafn, sem svo er kallaš, hiš mikla bókasafn sem afi hans gaf Hįskóla Ķslands įšur en hann lést og er nś varšveitt sem sérsafn ķ Landsbókasafni. Benedikt sendi safni afa sķns bękur, handrit og peninga.
Įriš 1964 kvęntist Benedikt Phyllis Mary Laybourn (f. 1940) bókasafnsfręšingi. Börn žeirra eru Einar Kenneth (f. 1966, dó ungur), Anna Žórunn (f. 1969), Eyjólfur Kenneth (f. 1970). Barnabörnin eru fimm.
Bendķ var einstakur mašur gęddur óvenjulegum gįfum sem komu fram strax į barnsaldri. Hann var eins og gangandi alfręšioršabók. Bendķ var frįbęr eftirherma og góšur óperusöngvari.
Morgunblašiš: Andlįt Benedikt S. Benedikz.
Fyrir fįeinum dögum (28. aprķl) birtist ķ breska stórblašinu The Times minningargrein um Bendķ sem sżnir vel hve sérstakur hann var og mikils metinn. Greinin birtist hér fyrir nešan
From The Times
April 28, 2009
Benedikt Benedikz: librarian and Norse scholar
Benedikt Sigurdur Benedikz was born in Reykjavik in 1932, the eldest son of the diplomat and bibliophile Eirikur Benedikz. At the age of 12, when his father was appointed chargé daffaires to the newly established Icelandic Legation in London, he moved to England, which remained his home for the rest of his life.
He was educated at Burford Grammar School, Pembroke College Oxford (where he also developed his talent as an operatic tenor) and University College London, where he took his diploma in librarianship in 1956. He was already a formidable linguist, always an asset in a librarian and often in other circumstances, too. His father once sent him round the eastern Mediterranean in a tramp steamer. Obliged to spend a night ashore in Turkey, Benedikz accepted hospitality in the tiny cell of an Orthodox monk, the only language they shared being Latin.
His first post was with Buckinghamshire County Library. In 1959 he was offered two positions one in the chorus at Covent Garden and one in the university library at Durham. He chose the latter and here he met Phyllis Laybourn, also a librarian. They married in 1964, having spent part of their courtship cataloguing the collection of the See of Durham at Auckland Castle. There followed three years in charge of the humanities collections at the New University of Ulster and two teaching bibliography at Leeds Polytechnic. His final move, in 1973, was to the University of Birmingham, as head of special collections, where he remained until his retirement in 1995.
Benedikz was equally at home in a library, lecture room or cathedral cloister. His particular forte was in the field of acquisitions. Thousands of rare books and the papers of Charles Masterman, Oliver Lodge, Oswald Mosley and the Church Mission Society came to Birmingham during his tenure. He nurtured and developed the two star collections the Avon and Chamberlain papers maintaining excellent relations with the families who had donated them. He taught bibliography, palaeography and Old Norse, and he was consultant to the cathedral libraries of Lichfield and Worcester and the magnificent library of Bishop Hurd at Hartlebury Castle.
His scholarship was many-sided. He edited On the Novel, a festschrift presented to Walter Allen, in 1971, and published a string of papers on Icelandic history and literature, Byzantine studies, bibliography, modern political papers and medieval manuscripts.
The work that gave him most satisfaction was The Varangians of Byzantium. This book was a revision and substantial rewriting of a Vęringja saga by Sigfśs Blöndal, a history of the Byzantine mercenary regiment that included Norsemen. Blöndal had died before its publication in Reykjavik in 1954, which attracted little attention. In 1960 Blöndals widow invited Benedikz to produce an English edition. It was published by Cambridge in 1978 and has recently been issued in paperback. For this and other published work the university awarded Benedikz a doctorate in 1979. He was elected a Fellow of the Royal Historical Society in 1981 and Fellow of the Society of Antiquaries in 1985. In 1999 the University of Nottingham, in acknowledgment of the familys gift of his fathers outstanding collection of Islandica, made him a member of their College of Benefactors. He became closely involved with Viking studies there and delivered the first of the biennial Fell-Benedikz lectures in 2000.
Genuine eccentrics are fast disappearing from academia but Ben Benedikz was certainly one of them. Before his arrival at Birmingham a colleague remarked of him: Mr Benedikz always strikes me as the sort of person any self-respecting university library ought to have one of. Snatches of grand opera would waft up and down the lift shaft and imitations of Churchill enlivened the reading room. He was a familiar figure every morning in the senior common room, laden with antiquarian book catalogues, picking up on the gossip and keeping the biscuit suppliers in business. A polymath in the tradition of Dr Johnson, whom he resembled both in build and intellect, he had an encyclopaedic knowledge of the most diverse facts. He was a walking Whos Who of theologians, politicians and academics, alive or dead. Cataloguers rarely had to consult reference books, for he could tell them immediately the correct name of a monk on the remote island of Fulda, the author of a long-forgotten Victorian childrens novel or an obscure French dramatist. Occasionally the facts would become tangled. He once memorably confused Virginia Woolfs Orlando with the childrens classic Orlando the Marmalade Cat.
He was not always at home with the more tedious aspects of library management, but his devotion to scholarship was never in doubt.
He is survived by his wife Phyllis, and their son and daughter.
Benedikt Benedikz, librarian and scholar, was born on April 4, 1932. He died on March 25, 2009, aged 76
Bókamerki Eirķks Benedikz
Minningargreinin ķ Times er hér.
Menning og listir | Breytt 2.5.2019 kl. 07:29 | Slóš | Facebook | Athugasemdir (5)
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