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Global Temperature Report, 1978 - 2003 the University of Alabama in Huntsville
Global Temperature Report, 1978 - 2003 The University of Alabama in Huntsville Global Temperature Report 1978 - 2003 Earth System Science Center The University of Alabama in Huntsville Dr. John Christy & Dr. Roy Spencer December 8, 2003 Global Temperature Report, 1978 - 2003 The University of Alabama in Huntsville Global Temperature Report 1978 - 2003 Contents: 25 years of taking Earth’s temperature ......... p. 1 The atmosphere is warming ........................ p. 2 Confirming the temperature data .............. p. 3 Finding and correcting errors..................... p. 4 Conflicting climate data ............................ p. 5 The ongoing climate conundrum .............. p. 6 Earth’s climate is constantly changing ......... p. 7 Climate and environmental priorities....... p. 8 Map of regional climate trends ................. p. 9 Biographical information......................... p. 10 Selected research publications ................. p. 11 Monthly means of lower tropospherepp. 12-14 Global temperature report: 11/03 ..... pp. 15-16 © 2003 Earth System Science Center, The University of Alabama in Huntsville UAH is a Space Grant University. • An Affirmative Action / Equal Opportunity Institution. Global Temperature Report, 1978 - 2003 The University of Alabama in Huntsville 25 years of taking Earth’s temperature In early November 1978 a The microwave sensors “see” sensors, Spencer teamed with Dr. microwave sensor aboard the huge volumes of atmosphere — John Christy from The University National Oceanic and Atmo- about 50,000 cubic kilometers for of Alabama in Huntsville (UAH) spheric Administration’s TIROS each reading. to analyze the data. polar-orbiting satellite started The data didn’t fit the forecast They concentrated on data scanning the Earth’s atmosphere. models and, as day-to-day tools from two altitude ranges: The It was looking at the intensity for forecasters, the microwave lower troposphere, from sea level of microwaves emitted by oxygen sensors weren’t very useful. -
Satellite Measurements of Warming in the Troposphere
This is the print version of the Skeptical Science article 'Satellites show no warming in the troposphere', which can be found at http://sks.to/troposphere. Satellite measurements of warming in the troposphere What The Science Says: Satellite measurements match model results apart from in the tropics. There is uncertainty with the tropical data due to how various teams correct for satellite drift. The U.S. Climate Change Science Program concludes the discrepancy is most likely due to data errors. Climate Myth: Satellites show no warming in the troposphere "Satellite measurements indicate an absence of significant global warming since 1979, the very period that human carbon dioxide emissions have been increasing rapidly. The satellite data signal not only the absence of substantial human-induced warming but also provide an empirical test of the greenhouse hypothesis - a test that the hypothesis fails." (Bob Carter) From 1978, a series of satellites have measured atmospheric temperature in the troposphere and stratosphere. The data is spliced together and adjusted for time-dependent biases by the University of Alabama in Huntsville (UAH), headed by John Christy and Roy Spencer. The initial results showed a warming trend of only 0.09°C per decade, well below the surface temperature trend of 0.17°C per decade. Climate models predict the troposphere should show greater warming than the surface. UAH versus RSS In November 2005, Carl Mears and Frank Wentz at Remote Sensing Systems (RSS) performed an independent analysis of the satellite data. In the process, they found an algebraic error in the UAH analysis. With the correction made, the UAH trend was now 0.12°C per decade - larger but still less than the surface trend. -
New Studies May Contribute to the Reconciliation
SOME CONVERGENCE OF GLOBAL WARMING ESTIMATES New Studies May Contribute to the Reconciliation of Satellite, Radio Sonde, Surface Data Indicating Recent Temperature Changes the Lower End of IPPC Projections – read more here Tech Central Station, 11 August 2005 By Roy Spencer In one of a trio of new global warming papers in Science, Mears & Wentz (2005) address what they consider to be a large source of uncertainty in our (University of Alabama in Huntsville, "UAH") satellite estimate for global lower tropospheric ("LT") temperature trends since 1979. The satellite measurements come from the Microwave Sounding Units (MSUs) and Advanced Microwave Sounding Units (AMSUs) flying on NOAA's polar orbiting weather satellites. The UAH estimate of the globally averaged trend since 1979 to the present has been +0.09 deg. C/decade, considerably below the surface thermometer estimate that has been hovering around +0.20 deg. C/decade for the same period of record. This discrepancy between the UAH satellite LT trends and the surface thermometer trends has caused some consternation, since what we understand of atmospheric physics suggests that sustained warming at the surface should be amplified with height in the troposphere, not reduced. Mears & Wentz, who are very capable remote sensing experts from Remote Sensing Systems ("RSS", Santa Rosa, California), found that the LT trend was particularly sensitive to the UAH method for removing the drift of the satellites through the local observing time. The satellites are launched into sun-synchronous orbits that are meant to cross over the same Earth locations at approximately the same time each day. But since the satellites do not have on- board propulsion, the satellites fall slowly back to Earth, which changes their orbital characteristics. -
109Th Congress House Hearings] [From the U.S
<DOC> [109th Congress House Hearings] [From the U.S. Government Printing Office via GPO Access] [DOCID: f:31362.wais] QUESTIONS SURROUNDING THE 'HOCKEY STICK' TEMPERATURE STUDIES: IMPLICATIONS FOR CLIMATE CHANGE ASSESSMENTS HEARINGS BEFORE THE SUBCOMMITTEE ON OVERSIGHT AND INVESTIGATIONS OF THE COMMITTEE ON ENERGY AND COMMERCE HOUSE OF REPRESENTATIVES ONE HUNDRED NINTH CONGRESS SECOND SESSION JULY 19 AND JULY 27, 2006 Serial No. 109-128 Printed for the use of the Committee on Energy and Commerce Available via the World Wide Web: http://www.access.gpo.gov/congress/house U.S. GOVERNMENT PRINTING OFFICE 31-362 PDF WASHINGTON : 2006 ______________________________________________________________________ For sale by the Superintendent of Documents, U.S. Government Printing Office Internet: bookstore.gpo.gov Phone: toll free (866) 512-1800; DC area (202) 512-1800 Fax: (202) 512-2250 Mail: Stop SSOP, Washington, DC 20402-0001 COMMITTEE ON ENERGY AND COMMERCE Joe Barton, Texas, Chairman Ralph M. Hall, Texas John D. Dingell, Michigan Michael Bilirakis, Florida Ranking Member Vice Chairman Henry A. Waxman, California Fred Upton, Michigan Edward J. Markey, Massachusetts Cliff Stearns, Florida Rick Boucher, Virginia Paul E. Gillmor, Ohio Edolphus Towns, New York Nathan Deal, Georgia Frank Pallone, Jr., New Jersey Ed Whitfield, Kentucky Sherrod Brown, Ohio Charlie Norwood, Georgia Bart Gordon, Tennessee Barbara Cubin, Wyoming Bobby L. Rush, Illinois John Shimkus, Illinois Anna G. Eshoo, California Heather Wilson, New Mexico Bart Stupak, Michigan John B. Shadegg, Arizona Eliot L. Engel, New York Charles W. "Chip" Pickering, Mississippi Albert R. Wynn, Maryland Vice Chairman Gene Green, Texas Vito Fossella, New York Ted Strickland, Ohio Roy Blunt, Missouri Diana DeGette, Colorado Steve Buyer, Indiana Lois Capps, California George Radanovich, California Mike Doyle, Pennsylvania Charles F. -
12. Minskar Värmeutstrålningen Till Rymden När Jorden Blir Varmare?
48 12. Minskar värmeutstrålningen till rymden när jorden blir varmare? FN:s klimatmodeller förutsäger också att värmeutstrålningen från jorden ska minska när jordytan värms till följd av växthuseffekten. I bilden till vänster visas förutsägelserna från 11 av FN:s datorsimuleringar, och i mitten resultaten från mätningar gjorda under 30 års tid med Erbe/Ceres-satelliterna. Resultatet visar att när den globala medeltemperaturen stiger, ökar också värmeutstrålningen till rymden. Klimatet är med andra ord inte så känsligt för växthuseffekten som FN:s klimatpanel antar. Intressant nog visar data från NOAA (t.h.) också att jordens reflektion av solstrålning i form av värme ökat under samma period, när den globala uppvärmningen officiellt antas ha accelererat på allvar. I själva verket har både FN och James Hansen successivt justerat ner sitt antagande om klimatets känslighet (nedan). Bland skeptiker uppskattas klimatkänsligheten oftast till 1 eller lägre, och observationerna talar för att den snarare är i stor- leksordningen 0,5 på grund av ökad bildning av låga, vita moln, som reflekterar solljuset (se fråga 27), och andra avkylande effekter - dvs att de sekundära effekterna av växthuseffekten inte förstärker, utan försvagar den direkta uppvärmning som orsakas av växthusgaserna. Svante Arrhenius, som studerade växthuseffekten redan på 1800-talet, beräknade den till hela 5 grader C 1896, men ändrade sin bedömning redan 10 år senare till bara 1,6 grader C. Allt du behöver veta om KLIMATHOTET 49 13. Accelererar uppvärmningen? De grafer som beskriver temperaturförändringarna bygger ofta på ”avvikelser från det normala”, där temperaturerna jämförs med en vis tidpunkt eller tidsperiod. Eftersom avvikelserna handlar om tiondelar av en grad, spänner diagrammen också mellan ungefär -1,5 och +1,5. -
Rn ,Evlew Rl +Rl
ic rn ,evlew rl +rl .+-- L ..... ,r ir +. - ...... --++'_ 2 ,, __ .... _-- +++ TII+I L.... +I T+ ++ + + . +"+-m-- -- _ + __ ==_+ NASA Conference Publication 3126 NASA/MSFC FY91 Global Scale Atmospheric Processes Research Program Review Edited by F. W. Leslie NASA George C. Marshall Space Flight Center Marshall Space Flight Center, Alabama Proceedings of a workshop held at NASA George C. Marshall Space Flight Center Huntsville, Alabama May 28-31, 1991 National Aeronautics and Space Administration Office of Management Scientific and Technical Information Program 1991 TABLE OF CONTENTS Page Global Water Cycle Franklin Robertson, John Christy, Steve Goodman, Tim Miller, Dan Fitzjarrald, Bill Lapenta, and Shouping Wang ................................................. Basic Studies of Baroclinic Flows T. L. Miller, S.-H. Chou, F. W. Leslie, H.-I. Lu, and K. A. Butler ........................................ Climate Dynamics Experiments Using a GCM Simulations D. Fitzjarrald, F. Robertson, J. Christy, H. Lu, B. Sohn, and J. Srikishen ......................................... MAMS - High Resolution Atmospheric Moisture/Surface Properties (460-21-30-90) Gary J. Jedlovec, Anthony R. Guillory, Ron Suggs, Robert J. Atkinson, and Grant S. Carlson .......................... AMPR/SSMI Data Comparisons Roy W. Spencer, Robbie Hood, and Frank LaFontaine ................. 13 Atmospheric Aerosol and Doppler Lidar Studies J. Rothermel, D.A. Bowdle, V. Srivastava, M. Jarzembski, D. Cutten, and E.W. McCaul, Jr ..................... 15 Global Lightning Studies Steven J. Goodman, Pat Wright, Hugh Christian, Richard Blakeslee, Dennis Buechler, and Greg Scharfen ............. 19 WetNet Operations H. Michael Goodman, Matt Smith, Vada LaFontaine, Frank LaFontaine, and Don Moss .................................... 21 Advanced Visualization Techniques Mike Botts ........................................................ 25 Interactive Access and Management for Four-Dimensional Environmental Data Sets Using McIDAS William L. -
Temperature Trends in the Lower Atmosphere: Steps for Understanding and Reconciling Differences
SAP-1.1 Prospectus for Temperature Trends in the Lower Atmosphere: Steps for Understanding and Reconciling Differences rogram ce P ien Sc e g n Lead Agency a National Oceanic and Atmospheric h Administration (NOAA) C Contributing Agencies e t National Aeronautics and Space a Administration (NASA) Department of Energy (DOE) m National Science Foundation (NSF) i l C . S . U 28 January 2005 CCSP Synthesis and Assessment Product 1.1 Assessment Product Synthesis and CCSP Agency Leads Tom Karl, Chris Miller, Bill Murray Department of Commerce, National Oceanic and Atmospheric Administration Rick Petty Department of Energy Eric Fetzer National Aeronautics and Space Administration Jay Fein National Science Foundation For More Information U.S. Climate Change Science Program 1717 Pennsylvania Avenue, NW, Suite 250 Washington, DC 20006 USA +1.202.223.6262 (voice) +1.202.223.3065 (fax) http://www.climatescience.gov/ This prospectus has been prepared according to the Guidelines for Producing Climate Change Science Program (CCSP) Synthesis and Assessment Products. The prospectus was reviewed and approved by the CCSP Interagency Committee. The document describes the focus of this synthesis and assessment product, and the process that will be used to prepare it. The document does not express any regulatory policies of the United States or any of its agencies, or make any findings of fact that could serve as predicates for regulatory action. U.S. CLIMATE C HANGE S CIENCE P ROGRAM Prospectus for Synthesis and Assessment Product 1.1* Temperature Trends in the Lower Atmosphere: Steps for Understanding and Reconciling Differences Chief Editor: Thomas R. Karl Associate Editors: Christopher D.