Monitoring spatiotemporal and seasonal variation of agricultural drought in Bangladesh using MODIS-derived vegetation health index

Md Kamal Hosen, Md Shaharier Alam, Torit Chakraborty, Md Rony Golder

Research output: Contribution to journalArticlepeer-review

Abstract

Drought is one of the most menacing calamities confronted by agrarian economy-dependent countries. Monitoring drought can be valuable in lessening the long-term impacts on food security and achieving zero hunger. This research monitored the spatio-temporal variation of agricultural droughts in Bangladesh from 2000 to 2020, using the MODIS-derived vegetation health index. Several MODIS-derived indices were also calculated using the Google Earth Engine. The droughts are measured based on three cropping seasons in Bangladesh, including Kharif-1 (mid-May to mid-June), Kharif-2 (mid-June to mid-October), and Rabi (mid-October to mid-May). During the Rabi season, agricultural droughts peaked in 2000 and 2008, when around 90.90% and 68.12% of the area was under drought conditions, respectively. Bangladesh faced droughts during the Kharif-1 season in 2001, 2006, and 2014, when 79.84%, 72.35%, and 66.06% of areas suffered droughts, respectively. The Kharif-2 season drought was highest during 2002, 2009, and 2014 when around 46.76%, 42.67%, and 40.64% of areas in Bangladesh encountered droughts, respectively. A declining trend in drought was noticed in recent years during the Rabi and Kharif-1 seasons, whereas a continuous trend was noticed in the Kharif-2 season. This research can be crucial for agronomic planners to devise plans effectively and alleviate the potential effects of droughts.

Original languageEnglish
Article number188
Number of pages13
JournalJournal of Earth System Science
Volume132
Issue number4
DOIs
Publication statusPublished - Dec 2023
Externally publishedYes

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