Changes in the frequency of hot, humid days and nights in the Mississippi River Basin

Tavakol, Ameneh; Rahmani, Vahid; Harrington, John A.

doi:10.1002/joc.6484

Cited by 6 publications

(3 citation statements)

References 87 publications

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“…Only two stations located in the north-eastern part of the study area had a significant negative trend for both time periods. This area might be considered as part of the "warming hole" in the United States where temperature and extreme temperature events have downward trends [68][69][70][71][72] . Future changes in the occurrence of compound extreme hot and dry days during crop-growing seasons will negatively influence crop yield 73 .…”

Section: Resultsmentioning

confidence: 99%

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Temporal and spatial variations in the frequency of compound hot, dry, and windy events in the central United States

Tavakol

Rahmani

Harrington

2020

Sci Rep

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Simultaneous low humidity, high temperature, and high wind speeds disturb the water balance in plants, intensify evapotranspiration, and can ultimately lead to crop damage. In addition, these events have been linked to flash droughts and can play a critical role in the spread of human ignited wildfires. The spatial patterns and temporal changes of hot, dry, and windy events (HDWs) for two time periods, 1949 to 2018 (70-years) and 1969 to 2018 (50-years) were analyzed in the central United States. The highest frequencies of HDWs were observed at stations in western Kansas and west Texas. Annually, the highest number of events happened concurrently with the major heat waves and droughts in 1980 and 2011. Temporally, an overall decrease in the HDWs was significant in the eastern regions of North Dakota and South Dakota, and an upward trend was significant in Texas and the western part of the Great Plains. Significant trends in HDWs co-occurred more frequently with significant trends in extreme temperatures compared with low humidity or strong wind events. The results of this study provide valuable information on the location of places where HDWs are more likely to occur. The information provided could be used to improve water management strategies.

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Section: Resultsmentioning

confidence: 99%

“…Although water vapor is increasing in the atmosphere 2,70,74 , the frequency of extreme low humidity events has also been increasing in western Great Plains. At 57% of the stations, the upward trend in extreme temperature events corresponds with an upward trend in the frequency of low relative humidity events in the 50-years period.…”

Section: Resultsmentioning

confidence: 99%

Temporal and spatial variations in the frequency of compound hot, dry, and windy events in the central United States

Tavakol

Rahmani

Harrington

2020

Sci Rep

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“…The data series observed by each surface gauge does not exceed 10% of missing data (Table 1). Condition imposed by several researchers as [18,42,43]. To assess the IMERG estimates, the dates with missing data were excluded from the two databases, Gauge and IMERG.…”

Section: Precipitation Datamentioning

confidence: 99%

Evaluation of the Integrated Multi-SatellitE Retrievals for the Global Precipitation Measurement (IMERG) Product in the São Francisco Basin (Brazil)

Rodrigues

Silva

Reis

et al. 2021

Water

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The São Francisco River basin is one of the largest in the Brazilian territory. This basin has enormous economic, social and cultural importance for the country. Its water is used for human and animal supply, irrigation and energy production. This basin is located in an area with different climatic characteristics (humid and semiarid) and studies related to precipitation are very important in this region. In this scenario, the objective of this investigation is to present an assessment of rainfall estimated through the Integrated Multi-SatellitE Retrievals for Global Precipitation Measurement (IMERG) product compared with rain gauges over the São Francisco river basin in Brazil. For that, a period from of 20 years and 18 surface weather stations were used to evaluate the product. Based on different evaluation techniques, the study found that the IMERG is appropriate to represent precipitation over the basin. According to the results, the performance of the IMERG product depends on the location where the rain occurs. The bias ranged from −1.67 to 0.34 mm, the RMSE ranged from 5.36 to 10.36 mm and the values of the correlation coefficients between the daily data from the IMERG and rain gauge ranged from 0.28 to 0.61. The results obtained by Student t-test, density curves and regression analysis, in general, show that the IMERG is able to satisfactorily represent rain gauge data. The exception is the eastern portion of the basin, where the product, on average, underestimates the precipitation (p-value < 0.05) and presents the worst statistical metrics.

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Climate change increased the compound extreme precipitation-flood events in a representative watershed of the Yangtze River Delta, China

Wang

et al. 2022

Stoch Environ Res Risk Assess

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A compound perspective on hydrological extreme events is of paramount signi cance as it may lead to damages with larger losses. In this study, an integrated framework, based on downscaled climate variables and hydrological model, i.e. the Soil and Water Assessment Tool, was applied to generate extreme precipitation (Rx1day) and extreme stream ow (Sx1day) series under historical and future climate conditions. Then the potential impacts of climate change for univariate and bivariate joint frequency of extreme precipitation and ood in Xitiaoxi River Basin (XRB), a representative watershed of the Yangtze River Delta, is detected. The compound risk of extreme precipitation and ood under different levels of joint return period for historical and projected periods are estimated by copula-based two-dimensional approaches. Major ndings can be summarized: (1) The Rx1day and Sx1day under future scenarios increased by -0.4 ~ 11.7% and 0.7 ~ 20.4%, respectively, compared to historical period based on univariate frequency analysis, indicating the increasing magnitude of the ood in the future. (2) Climate change with different emission scenarios all have a driving effect on the rising coactivity of extreme precipitation and ood under compound ooding frequency analysis. In addition, the enhancement of climate change to extreme events is more apparent for extremes with higher return period and under the periods of 2080s. (3) Moreover, the ood frequency designs are deduced by bivariate joint distribution are safer than that by univariate distribution. This study may provide actionable insights to formulate the planning scheme of ood control and disaster reduction under the changing environment. IntroductionGlobal precipitation characteristics and ood situations are expected to undergo signi cant changes as a consequence of global climate change including increasing temperatures and varying precipitation patterns projected for the future climate (IPCC, 2014). The incessant increase in magnitude and frequency of weather extremes (

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Changes in the frequency of hot, humid days and nights in the Mississippi River Basin

Cited by 6 publications

References 87 publications

Temporal and spatial variations in the frequency of compound hot, dry, and windy events in the central United States

Temporal and spatial variations in the frequency of compound hot, dry, and windy events in the central United States

Evaluation of the Integrated Multi-SatellitE Retrievals for the Global Precipitation Measurement (IMERG) Product in the São Francisco Basin (Brazil)

Climate change increased the compound extreme precipitation-flood events in a representative watershed of the Yangtze River Delta, China

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