Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-17-0354.1 |
Diagnosing ENSO and Global Warming Tropical Precipitation Shifts Using Surface Relative Humidity and Temperature | |
Todd, Alexander1; Collins, Matthew1; Lambert, F. Hugo1; Chadwick, Robin2 | |
2018-02-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2018 |
卷号 | 31期号:4页码:1413-1433 |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | Large uncertainty remains in future projections of tropical precipitation change under global warming. A simplified method for diagnosing tropical precipitation change is tested here on present-day El Nino-Southern Oscillation (ENSO) precipitation shifts. This method, based on the weak temperature gradient approximation, assumes precipitation is associated with local surface relative humidity (RH) and surface air temperature (SAT), relative to the tropical mean. Observed and simulated changes in RH and SAT are subsequently used to diagnose changes in precipitation. Present-day ENSO precipitation shifts are successfully diagnosed using observations (correlation r = 0.69) and an ensemble of atmosphere-only (0.51 <= r <= 0.8) and coupled (0.5 <= r <= 0.87) climate model simulations. RH (r = 0.56) is much more influential than SAT (r = 0.27) in determining ENSO precipitation shifts for observations and climate model simulations over both land and ocean. Using intermodel differences, a significant relationship is demonstrated between method performance over ocean for present-day ENSO and projected global warming (r = 0.68). As a caveat, the authors note that mechanisms leading to ENSO-related precipitation changes are not a direct analog for global warming-related precipitation changes. The diagnosis method presented here demonstrates plausible mechanisms that relate changes in precipitation, RH, and SAT under different climate perturbations. Therefore, uncertainty in future tropical precipitation changes may be linked with uncertainty in future RH and SAT changes. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000425166600007 |
WOS关键词 | COLUMN WATER-VAPOR ; EL-NINO ; HYDROLOGICAL CYCLE ; OCEAN ; CMIP5 ; MODEL ; PATTERNS ; LAND |
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/19716 |
专题 | 气候变化 |
作者单位 | 1.Univ Exeter, Exeter, Devon, England; 2.Met Off Hadley Ctr, Exeter, Devon, England |
推荐引用方式 GB/T 7714 | Todd, Alexander,Collins, Matthew,Lambert, F. Hugo,et al. Diagnosing ENSO and Global Warming Tropical Precipitation Shifts Using Surface Relative Humidity and Temperature[J]. JOURNAL OF CLIMATE,2018,31(4):1413-1433. |
APA | Todd, Alexander,Collins, Matthew,Lambert, F. Hugo,&Chadwick, Robin.(2018).Diagnosing ENSO and Global Warming Tropical Precipitation Shifts Using Surface Relative Humidity and Temperature.JOURNAL OF CLIMATE,31(4),1413-1433. |
MLA | Todd, Alexander,et al."Diagnosing ENSO and Global Warming Tropical Precipitation Shifts Using Surface Relative Humidity and Temperature".JOURNAL OF CLIMATE 31.4(2018):1413-1433. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论