globalchange  > 气候变化事实与影响
DOI: 10.1007/s13351-019-8130-1
WOS记录号: WOS:000468349800009
论文题名:
An Analysis of the Discontinuity in Chinese Radiosonde Temperature Data Using Satellite Observation as a Reference
作者: Guo, Yanjun1; Zou, Chengzhi2; Zhai, Panmao3; Wang, Guofu1
通讯作者: Guo, Yanjun
刊名: JOURNAL OF METEOROLOGICAL RESEARCH
ISSN: 2095-6037
EISSN: 2198-0934
出版年: 2019
卷: 33, 期:2, 页码:289-306
语种: 英语
英文关键词: radiosonde temperature ; homogenization ; satellite microwave sounding unit ; China ; upper air temperature trends
WOS关键词: ATMOSPHERIC-TEMPERATURE ; TIME-SERIES ; AIR TEMPERATURES ; TRENDS ; HOMOGENIZATION ; PRODUCTS ; RECORDS ; BIAS
WOS学科分类: Meteorology & Atmospheric Sciences
WOS研究方向: Meteorology & Atmospheric Sciences
英文摘要:

Reconciling upper-air temperature trends derived from radiosonde and satellite observations is a necessary step to confidently determine the global warming rate. This study examines the raw and homogenized radiosonde observations over China and compares them with layer-mean atmospheric temperatures derived from satellite microwave observations for the lower-troposphere (TLT), mid-troposphere (TMT), upper-troposphere (TUT), and lower-stratosphere (TLS) by three research groups. Comparisons are for averages over China, excluding the Tibetan Plateau, and at individual stations where metadata contain information on radiosonde instrument changes. It is found that major differences between the satellite and radiosonde observations are related to artificial systematic changes. The radiosonde system updates in the early 2000s over China caused significant discontinuities and led the radiosonde temperature trends to exhibit less warming in the middle and upper troposphere and more cooling in the lower stratosphere than satellite temperatures. Homogenized radiosonde data have been further adjusted by using the shift-point adjustment approaches to match with satellite products for China averages. The obtained trends during 1979-2015 from the re-adjusted radiosonde observation are respectively 0.203 +/- 0.066, 0.128 +/- 0.044, 0.034 +/- 0.039, and -0.329 +/- 0.135 K decade(-1) for TLT, TMT, TUT, and TLS equivalents. Compared to satellite trends, the re-adjusted radiosonde trends are within 0.01 K decade(-1) for TMT and TUT, 0.054 K decade(-1) warmer for TLT, and 0.051 K decade(-1) cooler for TLS. The results suggest that the use of satellite data as a reference is helpful in identifying and removing inhomogeneities of radiosonde temperatures over China and reconciling their trends to satellite microwave observations. Future efforts are to homogenize radiosonde temperatures at individual stations over China by using similar approaches.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/132803
Appears in Collections:气候变化事实与影响

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作者单位: 1.China Meteorol Adm, Natl Climate Ctr, Beijing 100081, Peoples R China
2.NOAA, Ctr Satellite Applicat & Res, Natl Environm Satellite Data & Informat Serv, College Pk, MD 20740 USA
3.Chinese Acad Meteorolg Sci, China Meteorol Adm, Beijing 100081, Peoples R China

Recommended Citation:
Guo, Yanjun,Zou, Chengzhi,Zhai, Panmao,et al. An Analysis of the Discontinuity in Chinese Radiosonde Temperature Data Using Satellite Observation as a Reference[J]. JOURNAL OF METEOROLOGICAL RESEARCH,2019-01-01,33(2):289-306
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