Changes in daily maximum temperature extremes across India over 1951–2014 and their relation with cereal crop productivity

Chakraborty, Debasish; Sehgal, Vinay Kumar; Dhakar, Rajkumar; Varghese, Eldho; Das, Deb Kumar; Ray, Mrinmoy

doi:10.1007/s00477-018-1604-3

Cited by 15 publications

(7 citation statements)

References 45 publications

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“…The strong warming trend was mostly recorded during monsoon months (June-July-August-September) especially for warm nights (Song et al 2011). The agro-eco regions categorized under Purvanchal range (AER 18), Assam -North Bengal plains (AER 16) and coastal belt of south Bengal (AER 19) were pre-disposed with significant rise in warmer day temperature extremes (warm days; TX90p) and subsequent decline in cool night (TN10p) occurrences, particularly over AER 18 (Chakraborty et al 2018). The contrasting rising trend in cold day temperature extremes (TX10p) were more conspicuous over Bengal basin (AER 15) and costal belts of south Bengal region (AER 19) than other adjacent AERs (Sharma et al 2017).…”

Section: Discussionmentioning

confidence: 99%

“…Uneven atmospheric warming pattern across the globe evokes the necessity for studying the spatiotemporal variability in climate change phenomenon, which is broadly reported to be more prominent over northern latitudes than mid-latitudes (IPCC, 2013). Anthropogenic climate change-induced significant rise in extreme weather events have been reported across the globe including south and southeast Asian landmass over past few decades (Sen Roy and Balling 2004;Klein Tank et al 2006;Panda and Kumar 2014;Sharma et al 2017;Chakraborty et al 2018;Akhoury and Avishek 2020). Since 1950, the seasonal frequency and magnitude of warm extremes increased with simultaneous decrease in cold extremes over Indian subcontinent (Sharma et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…Since 1950, the seasonal frequency and magnitude of warm extremes increased with simultaneous decrease in cold extremes over Indian subcontinent (Sharma et al, 2017). The strong effective influence of uneven seasonal surface warming pattern (heatwave; Chakraborty et al 2018) and other localized phenomenon viz. local terrain features (slope and physiography; Karki et al 2019), elevation and latitude (Revadekar et al 2013), urban pollution (Dahutia et al 2018), land-use changes (Rapp, 2014) and other different meteorological parameters (Revadekar et al 2013) often modify the seasonal dynamics of regional variation in temperature and precipitation extremes across Indian subcontinent.…”

Section: Introductionmentioning

confidence: 99%

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Spatiotemporal variability of weather extremes over eastern India: evidences of ascertained long-term trend persistence and effective global climate controls

Saha

Chakraborty

Hazarika

et al. 2022

Theor Appl Climatol

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The present study acknowledged climate variability induced periodic variation in localized extreme weather event occurrences under diverse agro eco-regions of Eastern Himalayas of India during past five decades. The widespread rise in warm nights (TN90p; 0.31-1.67 days year -1 ), reduced daily rainfall intensity (SDII) and changes in other weather extremes viz. temperature and precipitation extremes signified clear signals on regional atmospheric warming across eastern India. The agro-ecological regions under extended Bramhaputra valley and coastal belts of south Bengal experienced the most persistent shifts in temperature extremes, while the upper Himalayan range extended from North Bengal to Arunachal Pradesh experienced the steepest decline in average daily rainfall intensity and other absolute quantitative estimates of precipitation extremes over past five decades. Together with El Niño and La Niña events, large scale global atmospheric circulations particularly expansion of warmer Pacific Warm Pool (PWP) and changes in Atlantic Meridional Mode (AMM) contributed the periodic dynamics in weather extreme occurrences from monthly to annual time scale over eastern India. Our findings will be useful for better understanding of regional climatology, designing and successful implantation of location-specific suitable agricultural policies towards climate change adaptation in near future.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Spatiotemporal variability of weather extremes over eastern India: evidences of ascertained long-term trend persistence and effective global climate controls

Saha

Chakraborty

Hazarika

et al. 2022

Theor Appl Climatol

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“…The global temperature has been increasing day by day and the global average temperature has increased by 0.85°C during 1880-2012 while the last 30 years remains as the warmest in the last 1400 years history of the earth (IPCC 2013;Chakraborty et al, 2018;IPCC, 2007a). During 2018, 11 of 12 monthly global land and ocean temperature departures from average ranked among the five warmest for their respective months, giving way to fourth warmest year in NOAA's 139-year record (Global Climate Report-2019, National Centers for Environmental Information).…”

Section: Trends In Climatic Variablesmentioning

confidence: 99%

Recent trends and impacts of climate change in North-Eastern region of India-A review

Roy¹,

Kolady²,

Paudel³

et al. 2021

JEB

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The economy of North-Eastern (NE) region of India predominantly depends on farming, where only 12% of geographical area is available for cultivation out of which more than 85% is rain fed. Climate change has become a major concern in agriculture today, as farmers in many regions are struggling to cope with changing temperatures and rainfall pattern. Moreover, extreme weather situations like droughts, floods, heat and cold waves pose serious threat to food security, especially for small and marginal farmers. This review paper discusses the climate change in North-Eastern India based on the available climatic data from various published sources. Most of the analysis was performed on time series meteorological data recorded at different locations across the states of North-Eastern India namely, Assam, Arunachal Pradesh, Sikkim, Nagaland, Meghalaya, Manipur, Mizoram and Tripura. The increase in mean annual maximum temperature varied from 0.1°C per decade in Imphal (Manipur) to about 1.4°C per decade in Jharnapani (Nagaland). The changes were significant for all the states, except Sikkim. This region is one of the highest rainfall receiving regions of the world, but during February-March it faces water scarcity. The rainfall is projected to increase in 57 districts out of 78 districts, with some districts expected to experience almost 25% more rainfall than usual. The North-Eastern region of India has experienced notable changes in the pattern of major climatic variables such as rainfall and temperature. Average temperatures are projected to increase in almost all the districts of the region while annual rainfall is also reported to increase in almost 3/4th of the districts. The climate-induced natural disasters like drought, flood and hailstorms are the major threats of climate change and the incidence of these natural disasters are increasing in the recent years over the region.

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“…The mean temperature, however, is only part of the temperature distribution, though the variation of mean surface temperature is often noted as hallmark of climate change (Scherrer and Begert, 2019). Nowadays, discussions on climate change and variability are predominantly about the climatic extremes, instead of just the trends in the mean of climatic variables (Debasish et al ., 2018). Extremes have a disproportionate impact on ecosystems and society compared to changes in mean climate (Easterling et al ., 2000); and most ecosystems and societal systems are most susceptible to changes of maximum temperature (Tmax) and minimum temperature (Tmin; Franzke, 2015).…”

Section: Introductionmentioning

confidence: 99%

Dominant role of Atlantic multidecadal oscillation in the tipping point of maximum and minimum temperatures over inner East Asia

Guo

Guan

et al. 2022

Intl Journal of Climatology

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Despite unprecedented heatwave events reported in the past two decades over inner East Asia, the maximum and minimum temperatures of Tmax and Tmin do not always exhibit continuous increasing. After drastic increases in Tmax and Tmin appeared over inner East Asia from 1982, a decreasing trend occurred around 1998, which was closely associated with the Atlantic multidecadal oscillation (AMO). During 1950-2014, the correlation between Tmax (Tmin) and AMO at the decadal time scale reached 0.70 (0.83); and 65% (79%) variance of the decadal variability in Tmax (Tmin) was explained by the AMO and three other classic oceanic modes; the contribution of the AMO was up to 82% (91%) in the decadal modulated oscillation. The declines of Tmin and Tmax synchronized with the downward swing of the AMO since the late-1990 s, which was because the AMO could affect the vertical motion and wind anomalies of inner East Asia through the cyclonic-anticyclonic teleconnection wave train in the mid-latitudes of the Northern Hemisphere. The results of composite analysis show that during the positive phase of the AMO, a local ascending motion was enhanced over inner East Asia and a large-scale abnormal high was found north of East Asia in favour of cold air intrusion. Meanwhile, the start of growing season was delayed by the positive phase of the AMO over the northern part of inner East Asia due to the high sensitivity of spring phenology to the Tmin controlled by the AMO.

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Changes in daily maximum temperature extremes across India over 1951–2014 and their relation with cereal crop productivity

Cited by 15 publications

References 45 publications

Spatiotemporal variability of weather extremes over eastern India: evidences of ascertained long-term trend persistence and effective global climate controls

Spatiotemporal variability of weather extremes over eastern India: evidences of ascertained long-term trend persistence and effective global climate controls

Recent trends and impacts of climate change in North-Eastern region of India-A review

Dominant role of Atlantic multidecadal oscillation in the tipping point of maximum and minimum temperatures over inner East Asia

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