NHESS - The impact of drought on soil moisture trends across

Abstract. Over the past decade, Brazil has experienced severe droughts across its territory, with important implications for soil moisture dynamics. Soil moisture variability has a direct impact on agriculture, water security and ecosystem services. Nevertheless, there is currently little information on how soil moisture across different biomes responds to drought. In this study, we used satellite soil moisture data from the European Space Agency, from 2009 to 2015, to analyze differences in soil moisture responses to drought for each biome of Brazil: , Atlantic Forest, Caatinga, Cerrado, Pampa and Pantanal. We found an overall soil moisture decline of −0.5 % yr−1 (p<0.01) at the national level. At the biome level, Caatinga presented the most severe soil moisture decline (−4.4 % yr−1), whereas the Atlantic Forest and Cerrado biomes showed no significant trend. The biome showed no trend but had a sharp reduction of soil moisture from 2013 to 2015. In contrast, the Pampa and Pantanal biomes presented a positive trend (1.6 % yr−1 and 4.3 % yr−1, respectively). These trends are consistent with vegetation productivity trends across each biome. This information provides insights into drought risk reduction and soil conservation activities to minimize the impact of drought in the most vulnerable biomes. Furthermore, improving our understanding of soil moisture trends during periods of drought is crucial to enhance the national drought early warning system and develop customized strategies for adaptation to climate change in each biome.

Amplified signals of soil moisture and evaporative stresses across

HESS - Towards effective drought monitoring in the Middle East and

NASA GISS: NASA News & Feature Releases: NASA Drought Research

NHESS - Seasonal forecasting of local-scale soil moisture droughts

Multi-model ensemble projections of soil moisture drought over

Example monthly soil moisture profiles and drying and wetting

Frontiers Recent and projected changes in water scarcity and

Tracking Drought Using Soil Moisture Information

PDF) The impact of drought on soil moisture trends across

Continued decline of global soil moisture content, with obvious