DOI: 10.1175/JCLI-D-15-0713.1
Scopus记录号: 2-s2.0-84977502373
论文题名: On the detection of robust multidecadal changes in Earth's outgoing longwave radiation spectrum
作者: Bantges R.J. ; Brindley H.E. ; Chen X.H. ; Huang X.L. ; Harries J.E. ; Murray J.E.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 13 起始页码: 4939
结束页码: 4947
语种: 英语
Scopus关键词: Atmospheric radiation
; Climatology
; Greenhouse gases
; Infrared radiation
; Interferometry
; Climate variability
; Forcing
; Radiative forcings
; Satellite observations
; Variability
; Climate change
; algorithm
; climate change
; climate forcing
; infrared radiation
; longwave radiation
; meteorology
; radiative forcing
; spectrum
英文摘要: Differences between Earth's global mean all-sky outgoing longwave radiation spectrum as observed in 1970 [Interferometric Infrared Spectrometer (IRIS)], 1997 [Interferometric Monitor for Greenhouse Gases (IMG)], and 2012 [Infrared Atmospheric Sounding Instrument (IASI)] are presented. These differences are evaluated to determine whether these are robust signals of multidecadal radiative forcing and hence whether there is the potential for evaluating feedback-type responses. IASI-IRIS differences range from +2 K in the atmospheric window (800-1000 cm-1) to -5.5 K in the 1304 cm-1 CH4 band center. Corresponding IASI-IMG differences are much smaller, at 0.2 and -0.8 K, respectively. More noticeably, IASI-IRIS differences show a distinct step change across the 1042 cm-1 O3 band that is not seen in IASI-IMG comparisons. This step change is a consequence of a difference in behavior when moving from colder to warmer scenes in the IRIS data compared to IASI and IMG. Matched simulations for the relevant periods using ERA reanalyses mimic the spectral behavior shown by IASI and IMG rather than by IRIS. These findings suggest that uncertainties in the spectral response of IRIS preclude the use of these data for quantitative assessments of forcing and feedback processes. © 2016 American Meteorological Society. 资助项目: NASA, National Aeronautics and Space Administration
; U-M, University of Michigan
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50260
Appears in Collections: 气候变化事实与影响
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作者单位: Imperial College London, London, United Kingdom; NERC National Centre for Earth Observation, United Kingdom; University of Michigan, Ann Arbor, MI, United States
Recommended Citation:
Bantges R.J.,Brindley H.E.,Chen X.H.,et al. On the detection of robust multidecadal changes in Earth's outgoing longwave radiation spectrum[J]. Journal of Climate,2016-01-01,29(13)