Revisiting the Impact of Drought Over Mid-Continent USA From 2000-2019 Using High Resolution Data

IF 0.4 Q4 GEOGRAPHY
M. Mbuh
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引用次数: 0

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. This work focuses on drought analysis using a high-resolution remote sensing and meteorological dataset from MODIS’s 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.
利用高分辨率数据重新评估2000-2019年美国中部大陆干旱的影响
与干旱相关的缺水是一种复杂的危害,极端天气和气候事件对任何社会的农业、生态和社会经济活动都有严重影响。这项工作的重点是使用MODIS的NDVI和LST的高分辨率遥感和气象数据集进行干旱分析,以评估2000-2009年美国三个自然地理区域的干旱事件和强度的时空分布。将结果与其他基于遥感的干旱指数(如温度条件指数(TCI)、植被健康指数(VHI))进行比较,发现VCI和VHI是植被和气象信息的组合,与NDVI衍生的VCI相比,与降水数据具有很强的相关性。结果显示了2000年、2006年、2011年和2012年植被压力和极端干旱的严重性。长期农业干旱状况与其他干旱指数相比,表明TCI、VHI和降水异常也显著下降,这一点非常一致。
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来源期刊
CiteScore
1.20
自引率
0.00%
发文量
22
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