Modeling seasonal trends in optimum temperatures over India

Global warming and changes in seasonal temperature can severely affect the general circulation and precipitation distribution of a region. Therefore, it becomes essential to analyze seasonal trends in air temperature with changing climate. The present study evaluates the troposphere temperature extr...

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Autores principales:	Nishtha Agrawal, Vivek K. Pandey, Shailendra K. Mishra, Vinay S. Pandey
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	climate extremes regcm seasonal trends tropospheric temperature (tt) Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/bf2862dc58884162a5c58c3601b8617b
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spelling	oai:doaj.org-article:bf2862dc58884162a5c58c3601b8617b2021-11-05T19:01:18ZModeling seasonal trends in optimum temperatures over India2040-22442408-935410.2166/wcc.2020.072https://doaj.org/article/bf2862dc58884162a5c58c3601b8617b2021-08-01T00:00:00Zhttp://jwcc.iwaponline.com/content/12/5/1420https://doaj.org/toc/2040-2244https://doaj.org/toc/2408-9354Global warming and changes in seasonal temperature can severely affect the general circulation and precipitation distribution of a region. Therefore, it becomes essential to analyze seasonal trends in air temperature with changing climate. The present study evaluates the troposphere temperature extremes over India during different seasons. We intend to identify significant trends in temperature distribution in different regions of India using the Mann–Kendall test. Further, we have calculated indices concerning temperature extremes to make inferences about the nature of this monotonicity at four pressure levels on a seasonal and annual basis. The temperature data being used in our analysis is obtained from the output of a Regional Climate Model version 4.6 (RegCM v4.6). The monthly temperature values are taken for 25 years (1982–2006) from the model output. We observed that the model captured temperature climatology is coherent with our theoretical analysis. Results of our study reveal a significant (p < 0.05) trend in TT during all the seasons in major parts of the country in the lower troposphere. The upper troposphere, on the other hand, does not show any significant trend during most of the seasons. The identification of these changes can be useful for analysis of coastal vulnerability and extreme weather conditions. HIGHLIGHTS Changes in seasonal temperature can severely affect general circulation and precipitation distribution of a region; therefore, it is essential to analyze seasonal trends in air temperature with changing climate.; We evaluate the troposphere temperature extremes over India during different seasons and trends in temperature distribution in different regions of India. Indices concerning temperature extremes to make inferences about the nature of this monotonicity at four pressure levels on a seasonal and annual basis are also calculated.; The monthly temperature values are taken for 25 years (1982–2006) from the model output of RegCM v4.6.; We observed a significant trend in TT during all the seasons in major parts of the country only in the lower troposphere and no such trend was observed in the upper troposphere during most of the seasons.; Findings can be useful in examining the perturbed state of the atmosphere, shifts in weather patterns and its impact on mean seasonal circulation in the near future.;Nishtha AgrawalVivek K. PandeyShailendra K. MishraVinay S. PandeyIWA Publishingarticleclimate extremesregcmseasonal trendstropospheric temperature (tt)Environmental technology. Sanitary engineeringTD1-1066Environmental sciencesGE1-350ENJournal of Water and Climate Change, Vol 12, Iss 5, Pp 1420-1436 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	climate extremes regcm seasonal trends tropospheric temperature (tt) Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
spellingShingle	climate extremes regcm seasonal trends tropospheric temperature (tt) Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Nishtha Agrawal Vivek K. Pandey Shailendra K. Mishra Vinay S. Pandey Modeling seasonal trends in optimum temperatures over India
description	Global warming and changes in seasonal temperature can severely affect the general circulation and precipitation distribution of a region. Therefore, it becomes essential to analyze seasonal trends in air temperature with changing climate. The present study evaluates the troposphere temperature extremes over India during different seasons. We intend to identify significant trends in temperature distribution in different regions of India using the Mann–Kendall test. Further, we have calculated indices concerning temperature extremes to make inferences about the nature of this monotonicity at four pressure levels on a seasonal and annual basis. The temperature data being used in our analysis is obtained from the output of a Regional Climate Model version 4.6 (RegCM v4.6). The monthly temperature values are taken for 25 years (1982–2006) from the model output. We observed that the model captured temperature climatology is coherent with our theoretical analysis. Results of our study reveal a significant (p < 0.05) trend in TT during all the seasons in major parts of the country in the lower troposphere. The upper troposphere, on the other hand, does not show any significant trend during most of the seasons. The identification of these changes can be useful for analysis of coastal vulnerability and extreme weather conditions. HIGHLIGHTS Changes in seasonal temperature can severely affect general circulation and precipitation distribution of a region; therefore, it is essential to analyze seasonal trends in air temperature with changing climate.; We evaluate the troposphere temperature extremes over India during different seasons and trends in temperature distribution in different regions of India. Indices concerning temperature extremes to make inferences about the nature of this monotonicity at four pressure levels on a seasonal and annual basis are also calculated.; The monthly temperature values are taken for 25 years (1982–2006) from the model output of RegCM v4.6.; We observed a significant trend in TT during all the seasons in major parts of the country only in the lower troposphere and no such trend was observed in the upper troposphere during most of the seasons.; Findings can be useful in examining the perturbed state of the atmosphere, shifts in weather patterns and its impact on mean seasonal circulation in the near future.;
format	article
author	Nishtha Agrawal Vivek K. Pandey Shailendra K. Mishra Vinay S. Pandey
author_facet	Nishtha Agrawal Vivek K. Pandey Shailendra K. Mishra Vinay S. Pandey
author_sort	Nishtha Agrawal
title	Modeling seasonal trends in optimum temperatures over India
title_short	Modeling seasonal trends in optimum temperatures over India
title_full	Modeling seasonal trends in optimum temperatures over India
title_fullStr	Modeling seasonal trends in optimum temperatures over India
title_full_unstemmed	Modeling seasonal trends in optimum temperatures over India
title_sort	modeling seasonal trends in optimum temperatures over india
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/bf2862dc58884162a5c58c3601b8617b
work_keys_str_mv	AT nishthaagrawal modelingseasonaltrendsinoptimumtemperaturesoverindia AT vivekkpandey modelingseasonaltrendsinoptimumtemperaturesoverindia AT shailendrakmishra modelingseasonaltrendsinoptimumtemperaturesoverindia AT vinayspandey modelingseasonaltrendsinoptimumtemperaturesoverindia
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Modeling seasonal trends in optimum temperatures over India

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