globalchange  > 全球变化的国际研究计划
DOI: 10.1002/gdj3.76
WOS记录号: WOS:000481308000001
论文题名:
A new global dataset of phase synchronization of temperature and precipitation: Its climatology and contribution to global vegetation productivity
作者: Sun, Zhigang1,2,3,4; Ouyang, Zhu1,2,3,4; Zhang, Xubo1; Ren, Wei5
通讯作者: Sun, Zhigang
刊名: GEOSCIENCE DATA JOURNAL
ISSN: 2049-6060
出版年: 2019
语种: 英语
英文关键词: climate ; NDVI ; precipitation ; phase synchronization ; synchronization index ; temperature ; vegetation productivity
WOS关键词: TERRESTRIAL ECOSYSTEMS ; NORTHERN ECOSYSTEMS ; MONSOON ; SENSITIVITY ; TRAITS ; MODEL ; NPP ; CO2
WOS学科分类: Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS研究方向: Geology ; Meteorology & Atmospheric Sciences
英文摘要:

Besides cumulative temperature and precipitation, the phase synchronization of temperature and precipitation also helps to regulate vegetation distribution and productivity across global lands. However, the phase synchronization has been rarely considered in previous studies related to climate and biogeography due to a lack of a robust and quantitative approach. In this study, we proposed a synchronization index of temperature and precipitation (SI-TaP) and then investigated its global spatial distribution, interannual fluctuation, and long-term trend derived from a global 60-year dataset of meteorological forcings. Further investigation was conducted to understand the relationship between SI-TaP and the annually summed Normalized Difference Vegetation Index (NDVI), which could be a proxy of terrestrial vegetation productivity. Results show differences in both spatial patterns and temporal variations between SI-TaP and air temperature and precipitation, but SI-TaP may help to explain the distribution and productivity of terrestrial vegetation. About 60% of regions where annually summed NDVI is greater than half of its maximum value overlap regions where SI-TaP is greater than half of its maximum value. By using SI-TaP to explain vegetation productivity along with temperature and precipitation, the maximum increase in the coefficient of determination is 0.66 across global lands. Results from this study suggest that the proposed SI-TaP index is helpful to better understand climate change and its relation to the biota.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/143847
Appears in Collections:全球变化的国际研究计划

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作者单位: 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, CAS Engn Lab Yellow River Delta Modern Agr, Beijing, Peoples R China
3.Zhongke Shandong Dongying Inst Geog, Dongying, Peoples R China
4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China
5.Univ Kentucky, Coll Agr Food & Environm, Lexington, KY USA

Recommended Citation:
Sun, Zhigang,Ouyang, Zhu,Zhang, Xubo,et al. A new global dataset of phase synchronization of temperature and precipitation: Its climatology and contribution to global vegetation productivity[J]. GEOSCIENCE DATA JOURNAL,2019-01-01
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