Microwave remote sensing for agricultural drought monitoring: Recent developments and challenges

• DOI: 10.3389/frwa.2022.1045451
• Publication Date: 2022-11-30T06:43:14Z
• Authors: Mariette Vreugdenhil; Isabella Greimeis...; Wolfgang Preimesb...; Stefania Camici; Wouter Dorigo; Markus Enenkel; Robin van der Sch...; Susan Steele-Dunne; Wolfgang Wagner
• Keywords: 2. Zero hunger; microwave remote sensing; 0211 other engineering and technologies; drought; 02 engineering and technology; 910; 15. Life on land; Environmental technology. Sanitary engineering; 6. Clean water; vegetation; 13. Climate action; soil moisture; TD1-1066; agriculture

Agricultural droughts are extreme events which often a result of interplays between multiple hydro-meteorological processes. Therefore, assessing drought occurrence, extent, duration and intensity is complex requires the combined use variables, such as temperature, rainfall, soil moisture (SM) vegetation state. The benefit using information on SM state that they integrate precipitation, temperature evapotranspiration, making them direct indicators plant available water productivity. Microwave remote sensing enables retrieval both information, satellite-based products operationally free charge regional or global scale daily basis. As result, microwave play an increasingly important role in monitoring applications. Here, we provide overview recent developments for large-scale agricultural monitoring. We focus intricacy process development variables. First, give brief introduction fundamental concepts together with research, applications derived from microwave-based satellite observations. This followed by more detailed current research gaps challenges combining measurements data sets. potential demonstrated through case study over Senegal satellite- model-based sets SM, combinations thereof. demonstrates added-value observations Finally, outlook opportunities.