Global Warming Amplifies Outdoor Extreme Moist Heat During the Indian Summer Monsoon

Abstract Because of the climatological prevalence of hot, humid conditions, moist heat extremes are a significant challenge to the health and wellbeing of the people in India. While research has demonstrated the importance of summer monsoon to moist heat in India, impact of monsoon‐break and warm sp...

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Main Authors: Anukesh Krishnankutty Ambika, Akshay Rajeev, Matthew Huber
Format: Article
Language:English
Published: Wiley 2024-07-01
Series:Earth's Future
Online Access:https://doi.org/10.1029/2024EF004673
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author Anukesh Krishnankutty Ambika
Akshay Rajeev
Matthew Huber
author_facet Anukesh Krishnankutty Ambika
Akshay Rajeev
Matthew Huber
author_sort Anukesh Krishnankutty Ambika
collection DOAJ
description Abstract Because of the climatological prevalence of hot, humid conditions, moist heat extremes are a significant challenge to the health and wellbeing of the people in India. While research has demonstrated the importance of summer monsoon to moist heat in India, impact of monsoon‐break and warm spells in modulating extreme moist heat regionally has not been fully investigated. Here we investigate moist heat extremes, as measured by the Wet‐Bulb Globe Temperature (WBGT) metric, specifically during monsoon and monsoon‐break periods and find that they pose a major threat to physical labor and health relative to other seasons. During the 1951–2020 break period, an increase in area exposed (∼42.76 million km2), representing at least 670 million people, to extreme and detrimental WBGT values >31°C occur. Our results imply that future studies on extreme moist heat must pay close attention to the variation of weather systems on synoptic to subseasonal time scales that are superimposed on the seasonal monsoon migration.
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institution Kabale University
issn 2328-4277
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series Earth's Future
spelling doaj-art-1a52e657fdc34910acfc6e7a3462435d2025-01-29T07:58:52ZengWileyEarth's Future2328-42772024-07-01127n/an/a10.1029/2024EF004673Global Warming Amplifies Outdoor Extreme Moist Heat During the Indian Summer MonsoonAnukesh Krishnankutty Ambika0Akshay Rajeev1Matthew Huber2Department of Earth and Atmospheric Sciences Cornell University Ithaca NY USADepartment of Earth and Atmospheric Sciences Cornell University Ithaca NY USAEarth, Atmospheric and Planetary Sciences Department Purdue University West Lafayette IN USAAbstract Because of the climatological prevalence of hot, humid conditions, moist heat extremes are a significant challenge to the health and wellbeing of the people in India. While research has demonstrated the importance of summer monsoon to moist heat in India, impact of monsoon‐break and warm spells in modulating extreme moist heat regionally has not been fully investigated. Here we investigate moist heat extremes, as measured by the Wet‐Bulb Globe Temperature (WBGT) metric, specifically during monsoon and monsoon‐break periods and find that they pose a major threat to physical labor and health relative to other seasons. During the 1951–2020 break period, an increase in area exposed (∼42.76 million km2), representing at least 670 million people, to extreme and detrimental WBGT values >31°C occur. Our results imply that future studies on extreme moist heat must pay close attention to the variation of weather systems on synoptic to subseasonal time scales that are superimposed on the seasonal monsoon migration.https://doi.org/10.1029/2024EF004673
spellingShingle Anukesh Krishnankutty Ambika
Akshay Rajeev
Matthew Huber
Global Warming Amplifies Outdoor Extreme Moist Heat During the Indian Summer Monsoon
Earth's Future
title Global Warming Amplifies Outdoor Extreme Moist Heat During the Indian Summer Monsoon
title_full Global Warming Amplifies Outdoor Extreme Moist Heat During the Indian Summer Monsoon
title_fullStr Global Warming Amplifies Outdoor Extreme Moist Heat During the Indian Summer Monsoon
title_full_unstemmed Global Warming Amplifies Outdoor Extreme Moist Heat During the Indian Summer Monsoon
title_short Global Warming Amplifies Outdoor Extreme Moist Heat During the Indian Summer Monsoon
title_sort global warming amplifies outdoor extreme moist heat during the indian summer monsoon
url https://doi.org/10.1029/2024EF004673
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AT akshayrajeev globalwarmingamplifiesoutdoorextrememoistheatduringtheindiansummermonsoon
AT matthewhuber globalwarmingamplifiesoutdoorextrememoistheatduringtheindiansummermonsoon