Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019JD031991 |
Effect of Atlantic Sea Surface Temperature in May on Intraseasonal Variability of Eurasian NDVI in Summer | |
Ji, Liuqing1,2; Fan, Ke1,2 | |
2020-05-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2020 |
卷号 | 125期号:9 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Intraseasonal variabilities exist in terms of Eurasian vegetation growth in summer, as estimated by the Normalized Difference Vegetation Index (NDVI). The spatiotemporal patterns of Eurasian NDVI in June are significantly different from those in July and August (JA), especially over eastern Europe and western Siberia (50 degrees-70 degrees N, 30 degrees-90 degrees E; abbreviated as EEWS). Meanwhile, June and JA EEWS-NDVI respond differently to the Atlantic sea surface temperature in May over coastal regions (35 degrees-60 degrees N, 20 degrees W-20 degrees E; abbreviated as ACSST). During 1982-2015, the JA EEWS-NDVI is significantly related to May ACSST (correlation coefficient: 0.44, significant at the 1% level), whereas the June EEWS-NDVI shows only a slight and nonsignificant relationship (correlation coefficient: 0.23). In June, the EEWS-NDVI is primarily influenced by the local 2-m temperature (correlation coefficient: 0.62, significant at the 1% level), whereas in JA it is more closely linked with soil moisture (correlation coefficient: 0.38, significant at the 5% level). Increased May ACSST corresponds to lower surface air temperature and increased precipitation, which is accompanied by higher soil moisture over the EEWS region, and a persistently high soil moisture from May to JA is favorable for the growth of vegetation. However, the surface air temperature in June responding to higher ACSST is slightly lower, which is not conducive to the vegetation growth in June. Numerical experiments are carried out using CAM5, and the results support the proposed physical mechanisms. Therefore, May ACSST is a possible climatic factor responsible for the intraseasonal variabilities of EEWS-NDVI, which may serve as a predictor of JA vegetation over Eurasia. |
英文关键词 | sea surface temperature Atlantic Eurasia NDVI intraseasonal variability CAM5 |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000536605500016 |
WOS关键词 | MULTIDECADAL OSCILLATION ; TERRESTRIAL ECOSYSTEMS ; INTERANNUAL VARIATIONS ; VEGETATION GROWTH ; AIR-TEMPERATURE ; WINTER CLIMATE ; SNOW COVER ; FEEDBACKS ; PRECIPITATION ; TRENDS |
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/280217 |
专题 | 气候变化 |
作者单位 | 1.Chinese Acad Sci, Nansen Zhu Int Res Ctr, Inst Atmospher Phys, Beijing, Peoples R China; 2.Univ Chinese Acad Sci, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Ji, Liuqing,Fan, Ke. Effect of Atlantic Sea Surface Temperature in May on Intraseasonal Variability of Eurasian NDVI in Summer[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2020,125(9). |
APA | Ji, Liuqing,&Fan, Ke.(2020).Effect of Atlantic Sea Surface Temperature in May on Intraseasonal Variability of Eurasian NDVI in Summer.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,125(9). |
MLA | Ji, Liuqing,et al."Effect of Atlantic Sea Surface Temperature in May on Intraseasonal Variability of Eurasian NDVI in Summer".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 125.9(2020). |
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