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Revisiting the impact of drought over the mid-continent USA from 2000-2019 using High-resolution data
  • Mbongowo Mbuh
Mbongowo Mbuh
University of North Dakota

Corresponding Author:[email protected]

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Abstract

Drought-associated water shortage a complicated hazard, and extreme weather and climate events have serious impacts on agricultural, ecological, and socio-economic activities in any society. Several drought indices have been developed over the past decades for assessing the scope, start, duration, and intensity of drought. This work focuses on drought analysis using a high-resolution remote sensing and meteorological dataset from MODIS’ NDVI and LST to evaluate the Spatio-temporal distribution drought events and intensities in three physiographic regions of the USA from 2000 – 2019. Results were compared with other remote-sensing-based drought indices, such as the temperature condition index (TCI), Vegetation Health index (VHI), and it was observed that the VCI and VHI, which was a combination of vegetation and meteorological information, had a strong correlation with precipitation data than the NDVI-derived VCI. The results demonstrated the severity of vegetation stress and extreme droughts in 2000, 2006, 2011, and 2012. The long-term agricultural drought situation and compared with other drought indices, reveals a good agreement as to the TCI, VHI, and precipitation anomalies also decreased significantly.