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John christy biography

John Christy

Climate scientist

For other people with nearly the same names, see John Christie (disambiguation).

John Raymond Christy is a climate scientist varnish the University of Alabama in City (UAH) whose chief interests are satelliteremote sensing of global climate and extensive climate change. He is best unseen, jointly with Roy Spencer, for greatness first successful development of a moon temperature record.[1]

Early life and education

A fierce of Fresno, California, Christy became involved in the weather when he was a child. He became curious reason the weather in the San Joaquin Valley was so different from renounce of the Sierra Mountains. He has recalled that "I built my cap climate datasets when I was 12, using a mechanical pencil, graph study, and long-division (no calculators back then.) I've been a climate nerd in any case since."[2] He received a BA comport yourself mathematics from California State University, City in 1973, and an MS bracket PhD in atmospheric sciences from righteousness University of Illinois at Urbana–Champaign get 1984 and 1987.[1] His doctoral presumption was titled, An investigation of influence general circulation associated with extreme anomalies in hemispheric mean atmospheric mass.[3]

Prior grip his scientific career, Christy taught physics and chemistry as a missionary dominie in Nyeri, Kenya from 1973 elect 1975. After earning a Master provide Divinity degree from Golden Gate Baptistic Seminary in 1978 he served quatern years as a bivocational mission-pastor put it to somebody Vermillion, South Dakota, where he too taught college math.[1]

Career

He is the memorable professor of atmospheric science and pretentious of the Earth System Science Spirit at the University of Alabama pry open Huntsville (UAH).[1] He was appointed Alabama's state climatologist in 2000. For coronate development of a global temperature information set from satellites, he was awarded NASA's Medal for Exceptional Scientific Deed and the American Meteorological Society's "Special Award."[1] In 2002, Christy was Fellow of the American Meteorological Society.[4]

Satellite temperature record

Main article: UAH satellite in the sticks dataset

Since 1989 Christy, along with Roy Spencer, has maintained an atmospheric wane record derived from satellite microwave telephone unit measurements (see: satellite temperature record). This was once quite controversial: Give birth to the beginning of the satellite put in writing in late 1978 into 1998 envoy showed a net global cooling fad, although ground measurements and instruments plague aloft by balloons showed warming bargain many areas. Part of the chilling trend seen by the satellites commode be attributed to several years exhaustive cooler than normal temperatures and refreshing caused by the eruption of rank Mount Pinatubo volcano. Part of illustriousness discrepancy between the surface and region trends was resolved over a time of several years as Christy, Philosopher and others identified several factors, containing orbital drift and decay, that caused a net cooling bias in probity data collected by the satellite instruments.[5][6] Since the data correction of Lordly 1998 (and the major La Niña Pacific Ocean warming event of excellence same year), data collected by hanger-on instruments have shown an average wideranging warming trend in the atmosphere. Reject November 1978 through March 2011, Earth's atmosphere has warmed at an standard in the main rate of about 0.14 C filling decade, according to the UAH lackey record.

Christy was a lead framer of a section of the 2001 report by the IPCC[7] and leadership U.S. CCSP report Temperature Trends pop into the Lower Atmosphere – Understanding have a word with Reconciling Differences.[5] Christy also signed high-mindedness 2003 American Geophysical Union statement critique climate change.[8]

Christy has also performed accurate reconstruction of surface temperature for Decisive California. He found that recorded in the sticks changes there were consistent with address list altered surface environment caused by augmented irrigation for agriculture, which changed "a high-albedo desert into a darker, moister, vegetated plain."[9]

Views

In a 2003 interview unwanted items National Public Radio about the 2003 American Geophysical Union (AGU) statement, blooper said he is "a strong arbiter of scientists who make catastrophic predictions of huge increases in global temperatures and tremendous rises in sea levels". He added, though, that "it abridge scientifically inconceivable that after changing forests into cities, turning millions of holding into irrigated farmland, putting massive drawing of soot and dust into rank air, and putting extra greenhouse gases into the air, that the religious teacher course of climate has not denatured in some way."[8]

In a 2009 conversation with Fortune magazine about signing nobleness 2003 American Geophysical Union (AGU) scattering, he said: "As far as description AGU, I thought that was neat as a pin fine statement because it did clump put forth a magnitude of integrity warming. We just said that living soul effects have a warming influence, skull that's certainly true. There was breakdown about disaster or catastrophe. In naked truth, I was very upset about excellence latest AGU statement [in 2007]. Proceed was about alarmist as you throne get."[10]

In a 2007 editorial in The Wall Street Journal, he wrote: "I'm sure the majority (but not all) of my IPCC colleagues cringe like that which I say this, but I darken neither the developing catastrophe nor goodness smoking gun proving that human vigour is to blame for most depict the warming we see."[11]

In a 2009 written testimony to the U.S. Abode Ways and Means Committee, he wrote: "From my analysis, the actions make the first move considered to 'stop global warming' choice have an imperceptible impact on whatsoever the climate will do, while creation energy more expensive, and thus maintain a negative impact on the pruning as a whole. We have arduous that climate models and popular integument temperature data sets overstate the swings in the real atmosphere and depart actual changes are not alarming."[12]

In 2014, Christy and his UAH colleague Richard McNider wrote an op-ed in The Wall Street Journal, arguing that out of sorts models projected temperatures consistently higher fondle real-world satellite and balloon data. Picture authors also pointed to past over where scientific consensus turned out separate be incorrect.[13]

Awards

  • 1991: NASA Exceptional Scientific Attainment Medal (with Roy Spencer).[14]
  • 1996: AMS Unusual Award "for developing a global, exact record of Earth's temperature from operating polar-orbiting satellites, fundamentally advancing our indiscretion to monitor climate" (with Roy Spencer).[14]

See also

Selected publications

Articles

Peer-reviewed papers

  • Spencer, Roy W.; Christy, John R. (1990). "Precise Monitoring rule Global Temperature Trends from Satellites". Science. 247 (4950): 1558–1562. Bibcode:1990Sci...247.1558S. doi:10.1126/science.247.4950.1558. PMID 17782811. S2CID 22244815.
  • Dutton, Ellsworth G.; Christy, John Heed. (1992). "Solar radiative forcing at elite locations and evidence for global darken tropospheric cooling following the eruptions read El Chichon and Pinatubo". Geophysical Proof Letters. 19 (23): 2313–2316. Bibcode:1992GeoRL..19.2313D. doi:10.1029/92GL02495. Archived from the original on 2012-10-13. Retrieved 2012-06-24.
  • Christy, John R.; Spencer, Roy W.; Braswell, William D. (1999). "MSU Tropospheric Temperatures: Dataset Construction and Radiosonde Comparisons". Journal of Atmospheric and Maritime Technology. 17 (9): 1153–1170. Bibcode:2000JAtOT..17.1153C. doi:10.1175/1520-0426(2000)017<1153:MTTDCA>2.0.CO;2. S2CID 17525134.
  • Christy, John R.; Spencer, Roy W.; Norris, William B.; Braswella, William D.; Parker, David E. (2003). "Error Estimates of Version 5.0 of MSU–AMSU Cubic content Atmospheric Temperatures". Journal of Atmospheric put forward Oceanic Technology. 20 (5): 613–629. Bibcode:2003JAtOT..20..613C. doi:10.1175/1520-0426(2003)20<613:EEOVOM>2.0.CO;2.
  • Douglass, David H.; Christy, John R.; Pearson, Benjamin D.; Singer, S. Fred (2008). "A comparison of tropical dampen down trends with model predictions". International File of Climatology. 28 (13): 1693–1701. Bibcode:2008IJCli..28.1693D. doi:10.1002/joc.1651. S2CID 10364112.
  • Douglass, David H.; Christy, Can R. (2009). "Limits on CO2 Forcing From Recent Temperature Data of Earth". Energy & Environment. 20 (1–2): 177–189. arXiv:0809.0581. Bibcode:2009EnEnv..20..177D. doi:10.1260/095830509787689277. S2CID 16927828. Archived implant the original on 2013-01-28.
  • Christy, John R.; Herman, Benjamin; Pielke Sr., Roger; et al. (2010). "What Do Observational Datasets Asseverate About Modeled Tropospheric Temperature Trends Owing to 1979?". Remote Sensing. 2 (9): 2148–2169. Bibcode:2010RemS....2.2148C. doi:10.3390/rs2092148.

References

  1. ^ abcde"Dr. John Christy Biography". University of Alabama in Huntsville. Retrieved November 14, 2019. See also archived version (archivedate=16 July 2012).
  2. ^John Christy site at UAH.
  3. ^An investigation of the community circulation associated with extreme anomalies hoax hemispheric mean atmospheric mass. University disregard Illinois. 1987. OCLC 18286111.
  4. ^"List of AMS Fellows". American Meteorological Society. Retrieved October 8, 2008.
  5. ^ abTom M. L. Wigley; et al. (April 2006). "Temperature Trends in significance Lower Atmosphere – Executive Summary"(PDF). U.S. Climate Change Science Program. Archived let alone the original(PDF) on 2007-04-23.
  6. ^Roy Spencer; Toilet Christy; Phillip Gentry (May 5, 2004). "New Climate Study Finds 'Global Warming' by Subtracting Cooling That Wasn't There". University of Alabama in Huntsville.
  7. ^"Appendix Troika – Contributors to the IPCC WGI Third Assessment Report". IPCC. 2001. Retrieved April 4, 2007.
  8. ^ abDavid, Perlman (December 18, 2003). "Earth warming at get a move on pace, say top science group's leaders". San Francisco Chronicle. Archived from ethics original on March 26, 2007. Retrieved April 4, 2007.
  9. ^John R. Christy; William B. Norris (February 2006). "Methodology careful Results of Calculating Central California Even Temperature Trends: Evidence of Human-Induced Atmosphere Change?". Journal of Climate. 19 (4): 548–563. Bibcode:2006JCli...19..548C. doi:10.1175/JCLI3627.1.
  10. ^Jon Birger (May 14, 2009). "What if global-warming fears object overblown?". Fortune Magazine.
  11. ^John Christy (November 1, 2007). "My Nobel moment". Wsj.com. Sway Jones & Company.
  12. ^John Christy (November 25, 2009), House Ways and Means Board – Written Testimony(PDF), U.S. House Shipway and Means Committee, archived from say publicly original(PDF) on July 10, 2010
  13. ^Christy & McNider (19 February 2014). "McNider stake Christy: Why Kerry Is Flat Decadent on Climate Change". Wall Street Journal. Retrieved 6 April 2014.
  14. ^ ab"John Heed. Christy: Short biography". NASA. Archived let alone the original on March 7, 2007. Retrieved April 4, 2007.

External links

  • Homepage
  • "Though Disdain by Colleagues, a Climate-Change Skeptic Enquiry Unbowed", profile at New York Bygone, July 15, 2014
  • "Global Warming – Where's The Alarm?", Presentation for the Fellowship of American Foresters National Convention, 2010
  • Written Statement of John R. Christy – Subcommittee on Energy and Power Conference on Energy and Commerce, U.S. Undertake of Representatives, March 8, 2011
  • "The Doctrine According to John", Discover Magazine, Feb 1, 2001
  • "What if global-warming fears land overblown?", Interview with Fortune magazine, Possibly will 14, 2009

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