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  • October « 2005 « RealClimate
    article by journalist Sandi Doughton in the October 9 issue of the Times The Truth About Global Warming In the Q A a group of University of Washington scientists including atmospheric scientist and climate researcher J Mike Wallace weigh in with answers to questions fielded from the paper s readers Many of the questions such as Isn t it true that scientists in the 1970s said the earth was cooling are quite similar to those we ve addressed here at RealClimate see The Global Cooling Myth More Comments pop up 120 Global warming on Earth Filed under Climate Science El Nino Instrumental Record gavin 13 October 2005 The Washington Post picked up on the latest update to the 2005 temperature anomaly analysis from NASA GISS The 2005 Jan Sep land data which is adjusted for urban biases is higher than the previously warmest year 0 76 C compared to the 1998 anomaly of 0 75 C for the same months and a 0 71 C anomaly for the whole year while the land ocean temperature index which includes sea surface temperature data is trailing slightly behind 0 58 C compared to 0 60 C Jan Sep 0 56 C for the whole of 1998 The GISS team of which I am not a part had predicted that it was likely the 2005 would exceed the 1998 record when there was a very large El Niño at the beginning of that year based on the long term trends in surface temperature and the estimated continuing large imbalance in the Earth s radiation budget In 1998 the last three months of the year were relatively cool as the El Niño pattern had faded For the 2005 global land ocean index to exceed the annual 1998 record the mean anomaly needs to stay above 0 51 C for the next three months Since there was no El Niño this year and the mean so far is significantly above that this seems likely More Comments pop up 25 Older Entries Site Google Custom Search Recent Comments What is the best description of the greenhouse effect Jim Eager What is the best description of the greenhouse effect Patrick Eriksson What is the best description of the greenhouse effect Kevin McKinney Anti scientists Carbomontanus What is the best description of the greenhouse effect Spencer Marvel et al 2015 Part III Response to Nic Lewis SteveS What is the best description of the greenhouse effect Chris Colose Blizzard Jonas and the slowdown of the Gulf Stream System doiknow What is the best description of the greenhouse effect James Powell Unforced Variations Feb 2016 Jim Galasyn With Inline Responses Marvel et al 2015 Part III Response to Nic Lewis SteveS Marvel et al 2015 Part III Response to Nic Lewis steve s Marvel et al 2015 Part III Response to Nic Lewis Andrew Kerber Blizzard Jonas and the slowdown of the Gulf Stream System Hank Roberts Blizzard Jonas and the slowdown of the Gulf Stream System doiknow Marvel

    Original URL path: http://www.realclimate.org/index.php/archives/2005/10/ (2016-02-13)
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  • September « 2005 « RealClimate
    community we are only just starting to get to grips with some of the more complicated effects Obviously though not all forcings are of the same magnitude either globally or regionally and so it is useful to separate the first order forcings from those that are relatively minor But what exactly is first order and what is not More Comments pop up 47 Hurricanes and Global Warming Is There a Connection Filed under Climate modelling Climate Science El Nino FAQ Hurricanes Instrumental Record Oceans group 2 September 2005 by Stefan Rahmstorf Michael Mann Rasmus Benestad Gavin Schmidt and William Connolley On Monday August 29 Hurricane Katrina ravaged New Orleans Louisiana and Missisippi leaving a trail of destruction in her wake It will be some time until the full toll of this hurricane can be assessed but the devastating human and environmental impacts are already obvious Katrina was the most feared of all meteorological events a major hurricane making landfall in a highly populated low lying region In the wake of this devastation many have questioned whether global warming may have contributed to this disaster Could New Orleans be the first major U S city ravaged by human caused climate change More Comments pop up 317 Site Google Custom Search Recent Comments What is the best description of the greenhouse effect Jim Eager What is the best description of the greenhouse effect Patrick Eriksson What is the best description of the greenhouse effect Kevin McKinney Anti scientists Carbomontanus What is the best description of the greenhouse effect Spencer Marvel et al 2015 Part III Response to Nic Lewis SteveS What is the best description of the greenhouse effect Chris Colose Blizzard Jonas and the slowdown of the Gulf Stream System doiknow What is the best description of the greenhouse effect James Powell Unforced Variations Feb 2016 Jim Galasyn With Inline Responses Marvel et al 2015 Part III Response to Nic Lewis SteveS Marvel et al 2015 Part III Response to Nic Lewis steve s Marvel et al 2015 Part III Response to Nic Lewis Andrew Kerber Blizzard Jonas and the slowdown of the Gulf Stream System Hank Roberts Blizzard Jonas and the slowdown of the Gulf Stream System doiknow Marvel et al 2015 Part III Response to Nic Lewis MartinM Anti scientists Don McKenzie Marvel et al 2015 Part III Response to Nic Lewis Matt Skaggs Anti scientists mikeworst New On line Classes and Models Marcus Pages Acronym index Data Sources Categories Climate Science Aerosols Arctic and Antarctic Carbon cycle Climate impacts Climate modelling El Nino Geoengineering Greenhouse gases Hurricanes Instrumental Record IPCC Oceans Paleoclimate Sun earth connections Communicating Climate Reporting on climate skeptics Extras Attic Comment Policy Contributor Bio s FAQ Glossary In the News Reviews Supplemental data Tutorials hydrological cycle Open thread RC Forum Scientific practice statistics The Bore Hole Books Contributors Highlights Dummies Guide to the latest Hockey Stick controversy El Nino Global Warming and Anomalous U S Winter Warmth Hurricanes and Global Warming Myth vs Fact Regarding

    Original URL path: http://www.realclimate.org/index.php/archives/2005/09/ (2016-02-13)
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  • August « 2005 « RealClimate
    during the previous hurricane season and an essay on the relation between TCs and climate change The uncertainty surrounding trends in storminess was underlined and a point was being made about this subject being controversial More Comments pop up 46 Did the Sun hit record highs over the last few decades Filed under Climate Science Sun earth connections group 3 August 2005 Guest commentary by Raimund Muscheler note this is a restore 8 8 05 of an article from August 3 2005 that was accidentally deleted due to a technical glitch Unfortunately most of the comments could not be retrieved We sincerely apologize to our readers The solar influence on climate is a controversial topic in climate research see previous posts here and here The irradiance changes are assumed to be relatively small and the importance of potential amplifying mechanisms is still a matter of current debate One reason for these uncertainties is that there are only approximately 25 years of satellite based observations of the solar irradiance Sunspot observations for the last 400 years clearly indicate that current levels of solar activity are very different from the state of the sun during the Maunder minimum from approx 1645 to 1715 AD where almost no sunspots could be observed More Comments pop up 23 On record breaking events Filed under Climate Science Hurricanes rasmus 1 August 2005 NASA s Earth Observatory reports that there was a record low Arctic sea ice concentration in June 2005 There was a record number of typhoons over Japan in 2004 In June there were reports of a number of record breaking events in the US And on July 28 the British News paper The Independent reported on record breaking rainfall 1 m in India claiming hundreds of lives These are just a few examples of recent observations So what is happening More Comments pop up 71 Site Google Custom Search Recent Comments What is the best description of the greenhouse effect Jim Eager What is the best description of the greenhouse effect Patrick Eriksson What is the best description of the greenhouse effect Kevin McKinney Anti scientists Carbomontanus What is the best description of the greenhouse effect Spencer Marvel et al 2015 Part III Response to Nic Lewis SteveS What is the best description of the greenhouse effect Chris Colose Blizzard Jonas and the slowdown of the Gulf Stream System doiknow What is the best description of the greenhouse effect James Powell Unforced Variations Feb 2016 Jim Galasyn With Inline Responses Marvel et al 2015 Part III Response to Nic Lewis SteveS Marvel et al 2015 Part III Response to Nic Lewis steve s Marvel et al 2015 Part III Response to Nic Lewis Andrew Kerber Blizzard Jonas and the slowdown of the Gulf Stream System Hank Roberts Blizzard Jonas and the slowdown of the Gulf Stream System doiknow Marvel et al 2015 Part III Response to Nic Lewis MartinM Anti scientists Don McKenzie Marvel et al 2015 Part III Response to Nic Lewis

    Original URL path: http://www.realclimate.org/index.php/archives/2005/08/ (2016-02-13)
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  • July « 2005 « RealClimate
    of scope in blaming any unexplained phenomena on solar changes without fear of contradiction More Comments pop up 26 Climate sensitivity and aerosol forcings Filed under Aerosols Climate Science Greenhouse gases gavin 6 July 2005 In a new review paper in Nature this week Andreae Jones and Cox expand on the idea that uncertainty in climate sensitivity is directly related to uncertainty in present day aerosol forcing see also this New Scientist commentary This was discussed here a couple of months back in the Global Dimming and the climateprediction net posts and so it is worth revisiting the question in the light of their analysis More Comments pop up 42 The Acid Ocean the Other Problem with CO2 Emission Filed under Climate Science Greenhouse gases Oceans david 2 July 2005 The Royal Society has just issued a summary report on the effects of CO 2 on the pH chemistry of seawater and aquatic organisms and ecosystems In addition to its pivotal role in the atmosphere in the regulation of global climate CO 2 and its sister chemical species HCO 3 and CO 3 2 comprise the carbonate buffer system which regulates the pH of seawater The new report can be found here Acidifying the ocean is particularly detrimental to organisms that secrete shell material made of CaCO 3 such as coral reefs and a type of phytoplankton called coccolithophorids Kleypas et al 1999 The ocean pH change will persist for thousands of years Because the fossil fuel CO 2 rise is faster than natural CO 2 increases in the past the ocean will be acidified to a much greater extent than has occurred naturally in at least the past 800 000 years Caldeira and Wicket 2003 More Comments pop up 66 Site Google Custom Search Recent Comments What is the best description of the greenhouse effect Jim Eager What is the best description of the greenhouse effect Patrick Eriksson What is the best description of the greenhouse effect Kevin McKinney Anti scientists Carbomontanus What is the best description of the greenhouse effect Spencer Marvel et al 2015 Part III Response to Nic Lewis SteveS What is the best description of the greenhouse effect Chris Colose Blizzard Jonas and the slowdown of the Gulf Stream System doiknow What is the best description of the greenhouse effect James Powell Unforced Variations Feb 2016 Jim Galasyn With Inline Responses Marvel et al 2015 Part III Response to Nic Lewis SteveS Marvel et al 2015 Part III Response to Nic Lewis steve s Marvel et al 2015 Part III Response to Nic Lewis Andrew Kerber Blizzard Jonas and the slowdown of the Gulf Stream System Hank Roberts Blizzard Jonas and the slowdown of the Gulf Stream System doiknow Marvel et al 2015 Part III Response to Nic Lewis MartinM Anti scientists Don McKenzie Marvel et al 2015 Part III Response to Nic Lewis Matt Skaggs Anti scientists mikeworst New On line Classes and Models Marcus Pages Acronym index Data Sources Categories Climate Science Aerosols

    Original URL path: http://www.realclimate.org/index.php/archives/2005/07/ (2016-02-13)
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  • June « 2005 « RealClimate
    solicits contributions from the wider climate science community and so if you d like to help out drop us a line Comments pop up 8 Some recent updates Filed under Climate Science Hurricanes Oceans gavin 17 June 2005 A couple of recent papers in Science this week relate to discussions we have had on RealClimate recently The first by Curry and Mauritzen relates to the Gulf Stream Slowdown post and describes the amount of fresh water that has been added to the North Atlantic over the last few decades calculated from a database of salinity measurements and what impact that has had on density and overturning circulations There is a press release available at WHOI which is quite informative hat tip to Joseph O Sullivan for the link The second is related to the Storms and Climate Change post and is a perspective by Kevin Trenberth on the potential for a hurricanes and global warming link The NCAR press release is available here These will undoubtedly not be the last word on the subject and so we will probably be revisiting these topics at some point soon Comments pop up 8 Betting on climate change Filed under Climate Science group 14 June 2005 Guest contribution by James Annan of FRCGC JAMSTEC The more unpredictable the world the more we rely on predictions Steve Rivkin The uncertainty of an unknown future imposes costs and risks on us in many areas of life A cereal growing farmer risks a big financial loss if the price of grain is low at harvest time and a livestock farmer may not be able to afford to feed his herd if the price of grain goes up One way to reduce the risk is to hedge against it in a futures market The two farmers can enter a forward contract for one to deliver a set quantity of grain to the other for a fixed price at a future date And indeed farmers do routinely use futures contracts to reduce their risks More Comments pop up 125 Older Entries Site Google Custom Search Recent Comments What is the best description of the greenhouse effect Jim Eager What is the best description of the greenhouse effect Patrick Eriksson What is the best description of the greenhouse effect Kevin McKinney Anti scientists Carbomontanus What is the best description of the greenhouse effect Spencer Marvel et al 2015 Part III Response to Nic Lewis SteveS What is the best description of the greenhouse effect Chris Colose Blizzard Jonas and the slowdown of the Gulf Stream System doiknow What is the best description of the greenhouse effect James Powell Unforced Variations Feb 2016 Jim Galasyn With Inline Responses Marvel et al 2015 Part III Response to Nic Lewis SteveS Marvel et al 2015 Part III Response to Nic Lewis steve s Marvel et al 2015 Part III Response to Nic Lewis Andrew Kerber Blizzard Jonas and the slowdown of the Gulf Stream System Hank Roberts Blizzard Jonas and the slowdown

    Original URL path: http://www.realclimate.org/index.php/archives/2005/06/ (2016-02-13)
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  • May « 2005 « RealClimate
    was cited by a contributor to a debate on the website openDemocracy In short the argument is that the cosmic ray flux CRF also denoted as GCR galactic cosmic rays in some papers is the most important factor affecting our climate Since this issue is likely to crop up from time to time it is worth taking a closer look at the Veizer 2005 paper Here is a link to short summary but the actual paper requires subscription Update The actual paper is now available as supplemental material on the Geoscience Canada website I will try to show that CRF explanation for the recent global warming is easy to rule out More Comments pop up 21 Global Dimming may have a brighter future Filed under Aerosols Climate Science group 15 May 2005 A while ago we wrote about Global Dimming a reduction in downward solar radiation of about 4 or about 7W m2 from 1961 to 1990 was found at stations worldwide We said at the time that there were hints of a recovery underway post 1990 now research has been published showing this From Dimming to Brightening Decadal Changes in Solar Radiation at Earth s Surface by Martin Wild et al Science 6 May 2005 308 847 850 subscription required for link uses surface measurements Do Satellites Detect Trends in Surface Solar Radiation by Pinker et al Science 2005 308 850 854 uses satellites both find a recovery of surface downward radiation since about 1990 More Comments pop up 28 New Analysis Reproduces Graph of Late 20th Century Temperature Rise Filed under Climate Science Paleoclimate group 11 May 2005 To our readers who have followed the supposed hockey stick controversy this press release from NCAR just out today will be of interest Comments pop up 43 Older Entries Site Google Custom Search Recent Comments What is the best description of the greenhouse effect Jim Eager What is the best description of the greenhouse effect Patrick Eriksson What is the best description of the greenhouse effect Kevin McKinney Anti scientists Carbomontanus What is the best description of the greenhouse effect Spencer Marvel et al 2015 Part III Response to Nic Lewis SteveS What is the best description of the greenhouse effect Chris Colose Blizzard Jonas and the slowdown of the Gulf Stream System doiknow What is the best description of the greenhouse effect James Powell Unforced Variations Feb 2016 Jim Galasyn With Inline Responses Marvel et al 2015 Part III Response to Nic Lewis SteveS Marvel et al 2015 Part III Response to Nic Lewis steve s Marvel et al 2015 Part III Response to Nic Lewis Andrew Kerber Blizzard Jonas and the slowdown of the Gulf Stream System Hank Roberts Blizzard Jonas and the slowdown of the Gulf Stream System doiknow Marvel et al 2015 Part III Response to Nic Lewis MartinM Anti scientists Don McKenzie Marvel et al 2015 Part III Response to Nic Lewis Matt Skaggs Anti scientists mikeworst New On line Classes and Models Marcus Pages

    Original URL path: http://www.realclimate.org/index.php/archives/2005/05/ (2016-02-13)
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  • April « 2005 « RealClimate
    instance a new IPCC report was released that looked at the greenhouse warming potential of many of the replacement chemicals HFCs and HCFCs that were used to replace CFCs in aerosol cans and refrigeration units under the Montreal Protocol and subsequent amendments More Comments pop up 19 Water vapour feedback or forcing Filed under Climate modelling Climate Science FAQ Greenhouse gases gavin 6 April 2005 Whenever three or more contrarians are gathered together one will inevitably claim that water vapour is being unjustly neglected by IPCC scientists Why isn t water vapour acknowledged as a greenhouse gas Why does anyone even care about the other greenhouse gases since water vapour is 98 of the effect Why isn t water vapour included in climate models Why isn t included on the forcings bar charts etc Any mainstream scientist present will trot out the standard response that water vapour is indeed an important greenhouse gas it is included in all climate models but it is a feedback and not a forcing From personal experience I am aware that these distinctions are not clear to many and so here is a more in depth response see also this other attempt More Comments pop up 111 Doubts about the Advent of Spring Filed under Climate modelling Climate Science Instrumental Record Sun earth connections stefan 1 April 2005 A consensus view amongst climate scientists holds that the Northern Hemisphere will be warming this month as spring is coming This is thought to be due to the Earth s orbit around the sun and the inclination of the Earth s axis tilting the Northern Hemisphere progressively towards the sun throughout March and April and increasing the amount of solar radiation received at northern latitudes In a new novel State of Euphoria bestselling author Michael Crikey uncovers major flaws in this theory and warns against false hopes for the arrival of spring More Comments pop up 53 Site Google Custom Search Recent Comments What is the best description of the greenhouse effect Jim Eager What is the best description of the greenhouse effect Patrick Eriksson What is the best description of the greenhouse effect Kevin McKinney Anti scientists Carbomontanus What is the best description of the greenhouse effect Spencer Marvel et al 2015 Part III Response to Nic Lewis SteveS What is the best description of the greenhouse effect Chris Colose Blizzard Jonas and the slowdown of the Gulf Stream System doiknow What is the best description of the greenhouse effect James Powell Unforced Variations Feb 2016 Jim Galasyn With Inline Responses Marvel et al 2015 Part III Response to Nic Lewis SteveS Marvel et al 2015 Part III Response to Nic Lewis steve s Marvel et al 2015 Part III Response to Nic Lewis Andrew Kerber Blizzard Jonas and the slowdown of the Gulf Stream System Hank Roberts Blizzard Jonas and the slowdown of the Gulf Stream System doiknow Marvel et al 2015 Part III Response to Nic Lewis MartinM Anti scientists Don McKenzie Marvel et

    Original URL path: http://www.realclimate.org/index.php/archives/2005/04/ (2016-02-13)
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  • March « 2005 « RealClimate
    Thus the IPCC reports undergo a more stringent review process than common papers in the scientific literature More Comments pop up 7 IPCC in action Part I Filed under Climate modelling Climate Science IPCC gavin 14 March 2005 This is the first of two pieces on the recent IPCC workshop in Hawaii This brought together independent researchers from all over the world to analyse computer model simulations of the last 150 years and to assess whether they are actually any good Guest commentary from Natassa Romanou Columbia University During the first 3 days of March 2005 balmy downtown Honolulu in Hawaii was buzzing with agile scientists conversing chatting announcing briefing and informing about IPCC assessment reports climate models model evaluations climate sensitivities and feedbacks These were the participants of the Climate Model Evaluation Project workshop CMEP and came here from most if not all the major most prestigious climate research laboratories of the world including The US labs National Center for Atmospheric Research the Geophysical Fluid Dynamics Laboratory and the Goddard Institute for Space Studies the British Hadley Centre for Climate Prediction the German Max Planck Institute for Meteorology the Canadian Centre for Climate Modelling and Analysis the French Centre National de Recherches Meteorologiques and the IPSL LMD LSCE the Australian CSIRO Atmospheric Research the Chinese Institute of Atmospheric Physics the Russian Institute for Numerical Mathematics and the Japanese Meteorological Research Institute This meeting was sponsored by the benevolent NSF NOAA NASA and DOE More Comments pop up 28 Will spring 2005 be a bad one for Arctic ozone Filed under Arctic and Antarctic Climate Science gavin 10 March 2005 Guest Commentary by Drew Shindell NASA GISS The current winter and early spring have been extremely cold in the Arctic stratosphere leading to the potential for substantial ozone depletion there This has been alluded to recently in the press Sitnews Seattle Post Intelligencer but what s the likely outcome and why is it happening More Comments pop up 15 Site Google Custom Search Recent Comments What is the best description of the greenhouse effect Jim Eager What is the best description of the greenhouse effect Patrick Eriksson What is the best description of the greenhouse effect Kevin McKinney Anti scientists Carbomontanus What is the best description of the greenhouse effect Spencer Marvel et al 2015 Part III Response to Nic Lewis SteveS What is the best description of the greenhouse effect Chris Colose Blizzard Jonas and the slowdown of the Gulf Stream System doiknow What is the best description of the greenhouse effect James Powell Unforced Variations Feb 2016 Jim Galasyn With Inline Responses Marvel et al 2015 Part III Response to Nic Lewis SteveS Marvel et al 2015 Part III Response to Nic Lewis steve s Marvel et al 2015 Part III Response to Nic Lewis Andrew Kerber Blizzard Jonas and the slowdown of the Gulf Stream System Hank Roberts Blizzard Jonas and the slowdown of the Gulf Stream System doiknow Marvel et al 2015 Part III Response to

    Original URL path: http://www.realclimate.org/index.php/archives/2005/03/ (2016-02-13)
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