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Climate Models and Their Evaluation
8 Climate Models and Their Evaluation Coordinating Lead Authors: David A. Randall (USA), Richard A. Wood (UK) Lead Authors: Sandrine Bony (France), Robert Colman (Australia), Thierry Fichefet (Belgium), John Fyfe (Canada), Vladimir Kattsov (Russian Federation), Andrew Pitman (Australia), Jagadish Shukla (USA), Jayaraman Srinivasan (India), Ronald J. Stouffer (USA), Akimasa Sumi (Japan), Karl E. Taylor (USA) Contributing Authors: K. AchutaRao (USA), R. Allan (UK), A. Berger (Belgium), H. Blatter (Switzerland), C. Bonfi ls (USA, France), A. Boone (France, USA), C. Bretherton (USA), A. Broccoli (USA), V. Brovkin (Germany, Russian Federation), W. Cai (Australia), M. Claussen (Germany), P. Dirmeyer (USA), C. Doutriaux (USA, France), H. Drange (Norway), J.-L. Dufresne (France), S. Emori (Japan), P. Forster (UK), A. Frei (USA), A. Ganopolski (Germany), P. Gent (USA), P. Gleckler (USA), H. Goosse (Belgium), R. Graham (UK), J.M. Gregory (UK), R. Gudgel (USA), A. Hall (USA), S. Hallegatte (USA, France), H. Hasumi (Japan), A. Henderson-Sellers (Switzerland), H. Hendon (Australia), K. Hodges (UK), M. Holland (USA), A.A.M. Holtslag (Netherlands), E. Hunke (USA), P. Huybrechts (Belgium), W. Ingram (UK), F. Joos (Switzerland), B. Kirtman (USA), S. Klein (USA), R. Koster (USA), P. Kushner (Canada), J. Lanzante (USA), M. Latif (Germany), N.-C. Lau (USA), M. Meinshausen (Germany), A. Monahan (Canada), J.M. Murphy (UK), T. Osborn (UK), T. Pavlova (Russian Federationi), V. Petoukhov (Germany), T. Phillips (USA), S. Power (Australia), S. Rahmstorf (Germany), S.C.B. Raper (UK), H. Renssen (Netherlands), D. Rind (USA), M. Roberts (UK), A. Rosati (USA), C. Schär (Switzerland), A. Schmittner (USA, Germany), J. Scinocca (Canada), D. Seidov (USA), A.G. -
Conference Poster Production
65th Interdepartmental Hurricane Conference Miami, Florida February 28 - March 3, 2011 Hurricane Earl:September 2, 2010 Ocean and Atmospheric Influences on Tropical Cyclone Predictions: Challenges and Recent Progress S E S S Session 2 I The 2010 Tropical Cyclone Season in Review O N 2 The 2010 Atlantic Hurricane Season: Extremely Active but no U.S. Hurricane Landfalls Eric Blake and John L. Beven II ([email protected]) NOAA/NWS/National Hurricane Center The 2010 Atlantic hurricane season was quite active, with 19 named storms, 12 of which became hurricanes and 5 of which reached major hurricane intensity. These totals are well above the long-term normals of about 11 named storms, 6 hurricanes, and 2 major hurricanes. Although the 2010 season was considerably busier than normal, no hurricanes struck the United States. This was the most active season on record in the Atlantic that did not have a U.S. landfalling hurricane, and was also the second year in a row without a hurricane striking the U.S. coastline. A persistent trough along the east coast of the United States steered many of the hurricanes out to sea, while ridging over the central United States kept any hurricanes over the western part of the Caribbean Sea and Gulf of Mexico farther south over Central America and Mexico. The most significant U.S. impacts occurred with Tropical Storm Hermine, which brought hurricane-force wind gusts to south Texas along with extremely heavy rain, six fatalities, and about $240 million dollars of damage. Hurricane Earl was responsible for four deaths along the east coast of the United States due to very large swells, although the center of the hurricane stayed offshore. -
Cumulus Microphysics and Climate Sensitivity
2376 JOURNAL OF CLIMATE VOLUME 18 Cumulus Microphysics and Climate Sensitivity ANTHONY D. DEL GENIO NASA Goddard Institute for Space Studies, New York, New York WILLIAM KOVARI Center for Climate Systems Research, Columbia University, New York, New York MAO-SUNG YAO SGT, Inc., Institute for Space Studies, New York, New York JEFFREY JONAS Center for Climate Systems Research, Columbia University, New York, New York (Manuscript received 24 May 2004, in final form 15 October 2004) ABSTRACT Precipitation processes in convective storms are potentially a major regulator of cloud feedback. An unresolved issue is how the partitioning of convective condensate between precipitation-size particles that fall out of updrafts and smaller particles that are detrained to form anvil clouds will change as the climate warms. Tropical Rainfall Measuring Mission (TRMM) observations of tropical oceanic convective storms indicate higher precipitation efficiency at warmer sea surface temperature (SST) but also suggest that cumulus anvil sizes, albedos, and ice water paths become insensitive to warming at high temperatures. International Satellite Cloud Climatology Project (ISCCP) data show that instantaneous cirrus and deep convective cloud fractions are positively correlated and increase with SST except at the highest tempera- tures, but are sensitive to variations in large-scale vertical velocity. A simple conceptual model based on a Marshall–Palmer drop size distribution, empirical terminal velocity–particle size relationships, and assumed cumulus updraft speeds reproduces the observed tendency for detrained condensate to approach a limiting value at high SST. These results suggest that the climatic behavior of observed tropical convective clouds is intermediate between the extremes required to support the thermostat and adaptive iris hypotheses. -
Climate Change: Addressing the Major Skeptic Arguments
Climate Change: Addressing the Major Skeptic Arguments September 2010 Whitepaper available online: http://www.dbcca.com/research Carbon Counter widget available for download at: www.Know-The-Number.com Research Team Authors Mary-Elena Carr, Ph.D. Kate Brash Associate Director Assistant Director Columbia Climate Center, Earth Institute Columbia Climate Center, Earth Institute Columbia University Columbia University Robert F. Anderson, Ph.D. Ewing-Lamont Research Professor Lamont-Doherty Earth Observatory Columbia University DB Climate Change Advisors – Climate Change Investment Research Mark Fulton Bruce M. Kahn, Ph.D. Managing Director Director Global Head of Climate Change Investment Research Senior Investment Analyst Nils Mellquist Emily Soong Vice President Associate Senior Research Analyst Jake Baker Lucy Cotter Associate Research Analyst 2 Climate Change: Addressing the Major Skeptic Arguments Editorial Mark Fulton Global Head of Climate Change Investment Research Addressing the Climate Change Skeptics The purpose of this paper is to examine the many claims and counter-claims being made in the public debate about climate change science. For most of this year, the volume of this debate has turned way up as the ‘skeptics’ launched a determined assault on the climate findings accepted by the overwhelming majority of the scientific community. Unfortunately, the increased noise has only made it harder for people to untangle the arguments and form their own opinions. This is problematic because the way the public’s views are shaped is critical to future political action on climate change. For investors in particular, the implications are huge. While there are many arguments in favor of clean energy, water and sustainable agriculture – for instance, energy security, economic growth, and job opportunities – we at DB Climate Change Advisors (DBCCA) have always said that the science is one essential foundation of the whole climate change investment thesis. -
1858 San Diego Hurricane and Not Be Sur- Documented to Be Real
THE SAN DIEGO HURRICANE OF 2 OCTOBER 1858 BY MICHAEL CHENOWETH AND CHRISTOPHER LANDSEA The discovery of a hurricane that directly impacted San Diego, California, nearly 150 yr ago has implications for residents and risk managers in their planning for extreme events for the region. ropical cyclones forming in the eastern North 10 September 1976 in California and Arizona, and Pacific Ocean are occasional visitors to the Hurricane Nora in September 1997 in Arizona. Only T southwestern United States. By the time these the 1939 tropical storm made a direct landfall in coastal systems travel far enough to the north to bring their California (Smith 1986), because the other three sys- associated moisture to the United States, the tropical tems entered the United States after first making land- cyclones have normally diminished below tropical fall in Mexico. storm strength over Mexico or over the colder waters The 1939 tropical storm caused $2 million in prop- of the California Current that flows southward along erty damage in California, mostly to shipping, shore the California coast. Rain, sometimes locally excessive, structures, power and communication lines, and crops. is frequently observed in many areas of the southwest- Ships in coastal waters of southern California reported ern United States when tropical cyclone remnants en- southeast winds between 34 and 47 kt (Hurd 1939). ter the region (Blake 1935; Smith 1986). However, no tropical cyclones are recorded or esti- Four tropical cyclones have managed to bring tropi- mated to have made landfall in the southwestern cal storm–force winds to the southwestern United United States as a hurricane, with maximum 1-min States during the twentieth century: a tropical storm surface (10 m) winds of at least 64 kt. -
A Prediction Market for Climate Outcomes
Florida State University College of Law Scholarship Repository Scholarly Publications 2011 A Prediction Market for Climate Outcomes Shi-Ling Hsu Florida State University College of Law Follow this and additional works at: https://ir.law.fsu.edu/articles Part of the Environmental Law Commons, Law and Politics Commons, Natural Resources Law Commons, and the Oil, Gas, and Mineral Law Commons Recommended Citation Shi-Ling Hsu, A Prediction Market for Climate Outcomes, 83 U. COLO. L. REV. 179 (2011), Available at: https://ir.law.fsu.edu/articles/497 This Article is brought to you for free and open access by Scholarship Repository. It has been accepted for inclusion in Scholarly Publications by an authorized administrator of Scholarship Repository. For more information, please contact [email protected]. A PREDICTION MARKET FOR CLIMATE OUTCOMES * SHI-LING HSU This Article proposes a way of introducing some organization and tractability in climate science, generating more widely credible evaluations of climate science, and imposing some discipline on the processing and interpretation of climate information. I propose a two-part policy instrument consisting of (1) a carbon tax that is indexed to a “basket” of climate outcomes, and (2) a cap-and- trade system of emissions permits that can be redeemed in the future in lieu of paying the carbon tax. The amount of the carbon tax in this proposal (per ton of CO2) would be set each year on the basis of some objective, non-manipulable climate indices, such as temperature and mean sea level, and also on the number of certain climate events, such as flood events or droughts, that occurred in the previous year (or some moving average of previous years). -
Global Warming? No, Natural, Predictable Climate Change - Forbes Page 1 of 6
Global Warming? No, Natural, Predictable Climate Change - Forbes Page 1 of 6 Larry Bell, Contributor I write about climate, energy, environmental and space policy issues. OP/ED | 1/10/2012 @ 4:12PM | 3,332 views Global Warming? No, Natural, Predictable Climate Change An extensively peer-reviewed study published last December in the Journal of Atmospheric and Solar-Terrestrial Physics indicates that observed climate changes since 1850 are linked to cyclical, predictable, naturally occurring events in Earth’s solar system with little or no help from us. The research was conducted by Nicola Scafetta, a scientist at Duke University and at the Active Cavity Radiometer Solar Irradiance Monitor Lab (ACRIM), which is associated with the NASA Jet Propulsion Laboratory in California. It takes issue with methodologies applied by the U.N.’s Intergovernmental Panel for Climate Change (IPCC) using “general circulation climate models” (GCMs) that, by ignoring these important influences, are found to fail to reproduce the observed decadal and multi-decadal climatic cycles. As noted in the paper, the IPCC models also fail to incorporate climate modulating effects of solar changes such as cloud-forming influences of cosmic rays throughout periods of reduced sunspot activity. More clouds tend to make conditions cooler, while fewer often cause warming. At least 50-70% of observed 20th century warming might be associated with increased solar activity witnessed since the “Maunder Minimum” of the last 17th century. http://www.forbes.com/sites/larrybell/2012/01/10/global-warming-no-natural-predictable-c... 1/13/2012 Global Warming? No, Natural, Predictable Climate Change - Forbes Page 2 of 6 Dr. -
AMS Journals: Unsurpassed Quality, a Lasting Legacy, and Competitive Speed to Publication
LETTER FROM HEADQUARTERS AMS Journals: Unsurpassed Quality, a Lasting Legacy, and Competitive Speed to Publication hile AMS journals have always maintained a that takes the manuscript through editing, typesetting, level of quality that was unsurpassed in the and layout into final form as a high-quality archived W atmospheric and related sciences—by virtu- article in both full-function XML and PDF (plus print ally any measure you might care to focus on—there for those who still receive the journals in this format) was a period when they were less competitive is also occurring in record time—currently on the than some journals in our field when it came to the order of 60 days and improving continually. The level speed of publication. of editorial and produc- As many authors have tion work carried out happily learned in re- on manuscripts ensures cent years, this has not that the resulting article been the reality with is one that authors can AMS journals for some be proud of and one time—but the impres- that reflects well on sion still lingers in some the author when ac- quarters. So forgive cessed by scholars in me if you’ve heard this the future. before, but the steady The AMS journals improvements over re- have a long reputation cent years in the time of publishing seminal to first reviews means works, and the AMS that all the journals imprimatur is synony- making up the AMS mous with quality. AMS suite are now boasting review times in the range of authors do not need to make a choice between speed 50 days on average. -
Mariner's Guide for Hurricane Awareness
Mariner’s Guide For Hurricane Awareness In The North Atlantic Basin Eric J. Holweg [email protected] Meteorologist Tropical Analysis and Forecast Branch Tropical Prediction Center National Weather Service National Oceanic and Atmospheric Administration August 2000 Internet Sites with Weather and Communications Information Of Interest To The Mariner NOAA home page: http://www.noaa.gov NWS home page: http://www.nws.noaa.gov NWS marine dissemination page: http://www.nws.noaa.gov/om/marine/home.htm NWS marine text products: http://www.nws.noaa.gov/om/marine/forecast.htm NWS radio facsmile/marine charts: http://weather.noaa.gov/fax/marine.shtml NWS publications: http://www.nws.noaa.gov/om/nwspub.htm NOAA Data Buoy Center: http://www.ndbc.noaa.gov NOAA Weather Radio: http://www.nws.noaa.gov/nwr National Ocean Service (NOS): http://co-ops.nos.noaa.gov/ NOS Tide data: http://tidesonline.nos.noaa.gov/ USCG Navigation Center: http://www.navcen.uscg.mil Tropical Prediction Center: http://www.nhc.noaa.gov/ High Seas Forecasts and Charts: http://www.nhc.noaa.gov/forecast.html Marine Prediction Center: http://www.mpc.ncep.noaa.gov SST & Gulfstream: http://www4.nlmoc.navy.mil/data/oceans/gulfstream.html Hurricane Preparedness & Tracks: http://www.fema.gov/fema/trop.htm Time Zone Conversions: http://tycho.usno.navy.mil/zones.html Table of Contents Introduction and Purpose ................................................................................................................... 1 Disclaimer ........................................................................................................................................... -
Climate Changes Associated with Increasing CO 2
Welcome to ATMS 111 Global Warming http://www.atmos.washington.edu/2010Q1/111 These slides are preliminary and will likely be revised by class time. Vertical structure of the atmosphere Stratosphere ozone layer / ozone hole ultraviolet solar radiation sulfate aerosols from volcanic eruptions increasing GHG produces cooling Troposphere most clouds and atmospheric water vapor ozone from air pollution short residence time of aerosols Hurricanes and other storms RG p128-146 A taste of things to come? Keeping count: will there be more cyclones in the future? Surges and downpours Coastal concerns beyond the tropics Coastal storm flooding: a deepening problem Tornadoes: an overblown connection? Was Hurricane Katrina related to global warming? http://orca.rsmas.miami.edu/~schen/Isabel/goes_floater030912.avi Photo by UW Prof R. Houze The first storm churns up colder, deeper waters and leaves a trail of cool in its wake. The second storm loses strength when intersects this cold water trail. NASA NASA's Aqua and TRMM of SST. Sea height using the Jason-1 satellite. http://www.nasa.gov/centers/goddard/earthandsun/eye_to_eye.html Another example of cooler SST after storm passes Cold ocean temperature in Katrina’s Wake http://www.gfdl.noaa.gov/visualizations-hurricanes Loop Current 200-300km wide 80-150 m deep warm current ribbon In step 2 it has stretched so that it breaks off an eddy in step 3 Happens about ~6-11 months http://www7320.nrlssc.navy.mil/global_nlom32/ias.html Hurricane Katrina: Ocean Heat Content and wind speed in mph (next to black dots) Hurricane produce oceanic upwelling beneath the eye Upwelling of cold water can provide a strong negative feedback that limits the strength of the hurricane. -
The San Diego Hurricane of 2 October 1858
THE SAN DIEGO HURRICANE OF 2 OCTOBER 1858 BY MICHAEL CHENOWETH AND CHRISTOPHER LANDSEA The discovery of a hurricane that directly impacted San Diego, California, nearly 150 yr ago has implications for residents and risk managers in their planning for extreme events for the region. ropical cyclones forming in the eastern North 10 September 1976 in California and Arizona, and Pacific Ocean are occasional visitors to the Hurricane Nora in September 1997 in Arizona. Only Tsouthwestern United States. By the time these the 1939 tropical storm made a direct landfall in coastal systems travel far enough to the north to bring their California (Smith 1986), because the other three sys- associated moisture to the United States, the tropical tems entered the United States after first making land- cyclones have normally diminished below tropical fall in Mexico. storm strength over Mexico or over the colder waters The 1939 tropical storm caused $2 million in prop- of the California Current that flows southward along erty damage in California, mostly to shipping, shore the California coast. Rain, sometimes locally excessive, structures, power and communication lines, and crops. is frequently observed in many areas of the southwest- Ships in coastal waters of southern California reported ern United States when tropical cyclone remnants en- southeast winds between 34 and 47 kt (Hurd 1939). ter the region (Blake 1935; Smith 1986). However, no tropical cyclones are recorded or esti- Four tropical cyclones have managed to bring tropi- mated to have made landfall in the southwestern cal storm-force winds to the southwestern United United States as a hurricane, with maximum 1-min States during the twentieth century: a tropical storm surface (10 m) winds of at least 64 kt. -
THE LEIPZIG DECLARATION on GLOBAL CLIMATE CHANGE (2005, Revised)
Climate Change White Paper June 22, 2010 Appendix A Leipzig Declaration The Leipzig Declaration was originally published in 1996, and revised in 2005. The 2005 text is provided below. More information can be found at: http://www.sepp.org/policy%20declarations/LDrevised.html THE LEIPZIG DECLARATION ON GLOBAL CLIMATE CHANGE (2005, revised) As independent scientists researching atmospheric and climate problems, we -- along with many of our fellow citizens -– are apprehensive about the Climate Treaty conference scheduled for Kyoto, Japan, in December 1997. This gathering of politicians from some 160 signatory nations aims to impose -- on citizens of the industrialized nations, but not on others -- a system of global environmental regulations that include quotas and punitive taxes on energy fuels. Fossil fuels provide today's principal energy source, and energy is essential for all economic growth. Stabilizing atmospheric carbon dioxide -- the announced goal of the Climate Treaty -- would require that fuel use be cut by as much as 60 to 80 percent -- worldwide! In a world in which poverty is the greatest social pollutant, any restriction on energy use that inhibits economic growth should be viewed with caution. We understand the motivation to eliminate what are perceived to be the driving forces behind a potential climate change; but we believe the emerging Kyoto protocol -- to curtail carbon dioxide emissions from only part of the world community -- is dangerously simplistic, quite ineffective, and economically destructive to jobs and standards-of-living. More to the point, we consider the scientific basis of the 1992 Global Climate Treaty to be flawed and its goal to be unrealistic.