globalchange  > 过去全球变化的重建
DOI: 10.1007/s00382-013-1696-x
Scopus记录号: 2-s2.0-84884703238
论文题名:
A decadal microwave record of tropical air temperature from AMSU-A/aqua observations
作者: Shi Y.; Li K.-F.; Yung Y.L.; Aumann H.H.; Shi Z.; Hou T.Y.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2013
卷: 41, 期:2017-05-06
起始页码: 1385
结束页码: 1405
语种: 英语
英文关键词: Adaptive analysis ; Amplitude and phase profiles ; Atmospheric variability ; Near-annual variability ; Principal mode decomposition ; Temperature trends
英文摘要: Atmospheric temperature is one of the most important climate variables. This observational study presents detailed descriptions of the temperature variability imprinted in the 9-year brightness temperature data acquired by the Advanced Microwave Sounding Unit-Instrument A (AMSU-A) aboard Aqua since September 2002 over tropical oceans. A non-linear, adaptive method called the Ensemble Joint Multiple Extraction has been employed to extract the principal modes of variability in the AMSU-A/Aqua data. The semi-annual, annual, quasi-biennial oscillation (QBO) modes and QBO-annual beat in the troposphere and the stratosphere have been successfully recovered. The modulation by the El Niño/Southern oscillation (ENSO) in the troposphere was found and correlates well with the Multivariate ENSO Index. The long-term variations during 2002-2011 reveal a cooling trend (-0.5 K/decade at 10 hPa) in the tropical stratosphere; the trend below the tropical tropopause is not statistically significant due to the length of our data. A new tropospheric near-annual mode (period ~1.6 years) was also revealed in the troposphere, whose existence was confirmed using National Centers for Environmental Prediction Reanalysis air temperature data. The near-annual mode in the troposphere is found to prevail in the eastern Pacific region and is coherent with a near-annual mode in the observed sea surface temperature over the Warm Pool region that has previously been reported. It remains a challenge for climate models to simulate the trends and principal modes of natural variability reported in this work. © 2013 Springer-Verlag Berlin Heidelberg.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54804
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作者单位: Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong; Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Applied and Computational Mathematics, California Institute of Technology, Pasadena, CA, United States; Princeton Plasma Physics Laboratory, Department of Astrophysical Sciences, Princeton University, Princeton, NJ, United States; Mathematical Sciences Centre, Tsinghua University, Beijing, China

Recommended Citation:
Shi Y.,Li K.-F.,Yung Y.L.,et al. A decadal microwave record of tropical air temperature from AMSU-A/aqua observations[J]. Climate Dynamics,2013-01-01,41(2017-05-06)
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