Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-18-0225.1 |
Trends in Tropical Wave Activity from the 1980s to 2016 | |
Raghavendra, Ajay; Roundy, Paul E.; Zhou, Liming | |
2019-03-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2019 |
卷号 | 32期号:5页码:1661-1676 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | A frequency-wavenumber power () spectrum was constructed using satellite-derived outgoing longwave radiation (OLR) and brightness temperature for the tropical latitudes. Since the two datasets overlap for over 34 years with nonintersecting sources in error and compare relatively well with each other, it is possible to diagnose trends in the tropical wave activity from the two datasets with confidence. The results suggest a weakening trend in characterized by high interannual variability for wave activity occurring in the low-frequency part of the spectrum and a steady increase in with relatively low interannual variability for wave activity occurring in the high-frequency part of the spectrum. The results show the parts of the spectrum representing the Madden-Julian oscillation and equatorial Rossby wave losing and other parts of the spectrum representing Kelvin waves, mixed Rossby-gravity waves, and tropical disturbance-like wave activity gaining . Similar results were obtained when trends in variance corresponding to the first principal component were produced using spectrally filtered OLR data representative of atmospheric equatorial waves. Spatial trends in the active phase of wave events and the mean duration of events are also shown for the different wave types. Linear trends in for the entire spectrum and regional means in the spectrum corresponding to the abovementioned five wave types with confidence intervals are also presented in the paper. Finally, we demonstrate that El Nino-Southern Oscillation variability does not appear to control the overall spatial patterns and trends observed in the spectrum. |
英文关键词 | Atmosphere Convection Planetary waves Satellite observations Trends Tropical variability |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000458650900002 |
WOS关键词 | COUPLED EQUATORIAL WAVES ; MADDEN-JULIAN OSCILLATION ; WALKER CIRCULATION ; REGIME TRANSITIONS ; CONGO BASIN ; CLIMATOLOGY ; FREQUENCY ; MJO ; CYCLOGENESIS ; PROPAGATION |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/20473 |
专题 | 气候变化 |
作者单位 | SUNY Albany, Dept Atmospher & Environm Sci, Albany, NY 12222 USA |
推荐引用方式 GB/T 7714 | Raghavendra, Ajay,Roundy, Paul E.,Zhou, Liming. Trends in Tropical Wave Activity from the 1980s to 2016[J]. JOURNAL OF CLIMATE,2019,32(5):1661-1676. |
APA | Raghavendra, Ajay,Roundy, Paul E.,&Zhou, Liming.(2019).Trends in Tropical Wave Activity from the 1980s to 2016.JOURNAL OF CLIMATE,32(5),1661-1676. |
MLA | Raghavendra, Ajay,et al."Trends in Tropical Wave Activity from the 1980s to 2016".JOURNAL OF CLIMATE 32.5(2019):1661-1676. |
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