作者
Ying Sun, Rong Fu, Robert Dickinson, Joanna Joiner, Christian Frankenberg, Lianhong Gu, Youlong Xia, Nelun Fernando
发表日期
2015/11
期刊
Journal of Geophysical Research: Biogeosciences
卷号
120
期号
11
页码范围
2427-2440
简介
This study uses the droughts of 2011 in Texas and 2012 over the central Great Plains as case studies to explore the potential of satellite‐observed solar‐induced chlorophyll fluorescence (SIF) for monitoring drought dynamics. We find that the spatial patterns of negative SIF anomalies from the Global Ozone Monitoring Experiment 2 (GOME‐2) closely resembled drought intensity maps from the U.S. Drought Monitor for both events. The drought‐induced suppression of SIF occurred throughout 2011 but was exacerbated in summer in the Texas drought. This event was characterized by a persistent depletion of root zone soil moisture caused by yearlong below‐normal precipitation. In contrast, for the central Great Plains drought, warmer temperatures and relatively normal precipitation boosted SIF in the spring of 2012; however, a sudden drop in precipitation coupled with unusually high temperatures rapidly depleted …
引用总数
20162017201820192020202120222023202421040335042464318
学术搜索中的文章