Land-atmosphere coupling and soil moisture memory contribute to long-term agricultural drought 

Sanjiv Kumar, Auburn University, School of Forestry and Wildlife Sciences, Auburn, United States, Matthew Newman, University of Colorado at Boulder, Boulder, United States, David M Lawrence, NSF National Center for Atmospheric Research, Boulder, United States, Ben Livneh, University of Colorado at Boulder, Department of Civil, Environmental, and Architectural Engineering, Boulder, United States and Danica L. Lombardozzi, National Center for Atmospheric Research, CGD, Boulder, United States