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Spatial and Temporal Variations of Global Frictional Torque during the Period 1948–2011
Gong He1; Huang Mei2; Zhu Lin3; Guo Shengli1; Shao Yaping4
2016
Source PublicationJournal of Meteorological Research
ISSN2095-6037
Volume30Issue:1Pages:128
AbstractFrictional torque is an important mean for momentum exchange between the atmosphere and earth, and significantly influences the variation in atmospheric angular momentum. Using NCEP-NCAR reanalysis data for the period 1948–2011, we examined the spatial and temporal patterns of frictional torque. It was found that the globally integrated frictional torque turned from positive to negative in 1972, suggesting that angular momentum was transferred from the earth to the atmosphere before 1972, but from the atmosphere to the earth thereafter. The global frictional torque steadily declined from 1948 to 1994, but has been increasing since 1995. It was also found that the global frictional torque is mainly determined by the wind systems in the mid and low latitudes of the Southern Hemisphere (SH), where large changes in frictional torque occurred during the study period. Westerly wind increased continuously in the midlatitudes after 1948, while easterly wind decreased in the tropics of the SH after the 1980s.
Language英语
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/114971
Collection中国科学院地理科学与资源研究所
Affiliation1.南京信息工程大学
2.中国科学院地理科学与资源研究所
3.National Satellite Meteorological Center, China Meteorological Administration
4.科隆大学
Recommended Citation
GB/T 7714
Gong He,Huang Mei,Zhu Lin,等. Spatial and Temporal Variations of Global Frictional Torque during the Period 1948–2011[J]. Journal of Meteorological Research,2016,30(1):128.
APA Gong He,Huang Mei,Zhu Lin,Guo Shengli,&Shao Yaping.(2016).Spatial and Temporal Variations of Global Frictional Torque during the Period 1948–2011.Journal of Meteorological Research,30(1),128.
MLA Gong He,et al."Spatial and Temporal Variations of Global Frictional Torque during the Period 1948–2011".Journal of Meteorological Research 30.1(2016):128.
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