Impacts of Large‐Scale Urbanization and Irrigation on Summer Precipitation in the Mid‐Atlantic Region of the United States

Li, Jianfeng; Qian, Yun; Leung, L. Ruby; Feng, Zhe; Sarangi, Chandan; Liu, Ying; Yang, Zhao

doi:10.1029/2022gl097845

Cited by 12 publications

(21 citation statements)

References 87 publications

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Section: Discussionsupporting

confidence: 92%

“…The impact of urbanization and irrigation on the regional climate should consider the thermodynamic differences, surface characteristics, and urban heat island circulation (Miao et al, 2015). Urbanization suppressed the precipitation by altering the convective precipitation (Figure 11b), which is consistent with recent research (Li et al, 2022) Q slightly increased at the high level (>2,000 m) due to the enhanced sea-land breeze caused by the cooler sea and warmer land (H. Chen et al, 2016). But the Q on the near-surface level (<200 m) decreased in the urban area, which might be caused by the surface evapotranspiration reduction (Figure 14a).…”

Section: The Impact Of the Atmospheric Circulation And Land-sea Breez...supporting

confidence: 89%

“…Furthermore, the effects of urbanization and irrigation were analyzed individually in most previous studies (T. Chen et al., 2020; X. Chen & Jeong, 2018; Krakauer et al., 2020; Tse et al., 2018; G. Zhao et al., 2019). Only very recently, the first investigation on changes caused by both urbanization and irrigation on summer precipitation has been examined using WRF‐Noah over the United States (Li et al., 2022). Moreover, the climatic feedback (air temperature and precipitation) has never been investigated by the ALARO‐SURFEX model over the region with complex LUCCs like 3HP China.…”

Section: Introductionmentioning

confidence: 99%

“…Zhao et al, 2019). Only very recently, the first investigation on changes caused by both urbanization and irrigation on summer precipitation has been examined using WRF-Noah over the United States (Li et al, 2022). Moreover, the climatic feedback (air temperature and precipitation) has never been investigated by the ALARO-SURFEX model over the region with complex LUCCs like 3HP China.…”

mentioning

confidence: 99%

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Interplay Between Urbanization and Irrigation on Summer Climate in the Huang‐Huai‐Hai Plain, China

Cui

Hamdi

He³

et al. 2022

JGR Atmospheres

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Anthropogenic forcing, including greenhouse gas (GHGs) and aerosols, regional land use, and land management changes (e.g., irrigation) have all affected the observed regional climate changes (IPCC AR6, 2021). Biophysical effects of regional land changes that redistribute the energy and water vapor between the land and atmosphere further influence the regional climate (Shukla et al., 2019). Currently, much attention has been paid to GHGs, but only focusing on the biogeochemical feedback (while ignoring the biogeophysical factors) will lead to an overestimation of the GHGs warming effect (Davies et al., 2014). For example, urbanization amplifies the warming trend and heat extremes regionally by the increase in the impermeable surface and change in the atmospheric processes (Chao et al., 2020;Y. Wang et al., 2019). Along with a greater demand for residential space and food security caused by the global population growth (X. Chen & Jeong, 2018;Godfray et al., 2010), urbanization and irrigation have been the two main drivers of rapid land-use/cover changes (LUCCs) that could significantly influence regional climate change (W. Shi et al., 2014;B. Yang et al., 2016).Different approaches have been used to quantify the climatic effect of the LUCCs. For example, the UMR (urban meteorological stations observation minus rural stations), remote sensing data (

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Section: Discussionsupporting

confidence: 92%

Section: The Impact Of the Atmospheric Circulation And Land-sea Breez...supporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Interplay Between Urbanization and Irrigation on Summer Climate in the Huang‐Huai‐Hai Plain, China

Cui

Hamdi

He³

et al. 2022

JGR Atmospheres

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“…The land-atmosphere coupling was diagnosed via the convective triggering potential (CTP) and lowlevel humidity index (HI LOW ) framework (Findell and Eltahir 2003a, Ferguson and Wood 2011, Jach et al 2020, 2022. HI LOW ( • C) is calculated by the sum of the dewpoint depressions at 50 and 150 hPa above ground level (AGL) at 6 local sidereal time:…”

Section: Analysis Of Land-atmosphere Couplingmentioning

confidence: 99%

Rain-fed to irrigation-fed transition of agriculture exacerbates meteorological drought in cropped regions but moderates elsewhere

Kim

Kumar

Kam

2023

Environ. Res. Lett.

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In recent decades, irrigated agriculture has expanded dramatically over the Southeastern United States (SEUS). The trend is more likely to continue in future given the need to further improve crop productivity and its resilience against droughts, however, the impact of these SEUS land cover changes remains unknown. This study investigates how and to what extent rain-fed to irrigation-fed (RFtoIF) transition in the SEUS region modulates precipitation spatially and temporally under a severe drought meteorological condition. In this study, we perform three Weather Research Forecasting model simulations with varying degrees of irrigated crop areas with meteorological boundary conditions of a record-breaking 2007 drought in the SEUS region. Results show that the SEUS irrigation expansion reduces both the convective triggering potential and low-level humidity index through land-atmospheric interaction. This is accompanied by reduction in the height of atmospheric boundary layer-lifting condensation level crossing and increase in the convective available potential energy. These modulations within the atmospheric boundary layer provide a favorable condition for strong deep convection during the drought period. However, the impact on precipitation is heterogeneous, with crop areas undergoing RFtoIF transition experiencing an overall reduction in precipitation while other landcovers experiencing an increase. The reduction in precipitation over RFtoIF transitioned croplands is in part due to moisture redistribution aided by generation of an anomalous high-pressure system. The results highlight the complexity of response of precipitation to irrigation expansion in the SEUS, and underscore the need to perform spatially-explicit analysis for mitigating risks to water resources and food security.

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Performance of regional climate model RegCM4 with a hydrostatic or non‐hydrostatic dynamic core at simulating precipitation extremes in China

Qin,

Xie,

Jia

et al. 2023

Intl Journal of Climatology

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In this study, we investigated the performance of RegCM4 with a hydrostatic or non‐hydrostatic dynamic core and different land surface models at simulating the mean and extreme precipitation during 1991–1999 in China and the Beijing–Tianjin–Hebei urban agglomeration (JJJ) in northern China. The resolutions were 12 km with the whole of China included and 3 km nested over the JJJ region. The observed daily precipitation data comprised the CN05.1 data set from China Meteorological Administration. First, RegCM4 with a hydrostatic dynamic core forced by the Max Planck Institute Earth System Model (MPI‐ESM1.2‐HR) that participated in CMIP6 was used to simulate the east Asia area at a resolution of 12 km. Next, the RegCM4 results with 12 km resolution forced RegCM4 with a non‐hydrostatic dynamic core (RegCM4‐NH) to run over the JJJ region with a 3 km convection‐permitting scale through one‐way nesting. The results showed that RegCM4 with a hydrostatic and non‐hydrostatic core could obtain more detailed seasonal and annual precipitation in China and the JJJ region relative to MPI‐ESM1.2‐HR although their performance varied over different regions. RegCM4 with the community land surface model 4.5 (CLM4.5) generally performed better at simulating the mean and extreme precipitation over the four subregions of China than that with the Biosphere–Atmosphere Transfer Scheme because of more detailed descriptions of land surface processes of CLM4.5. RegCM4‐NH with convection‐permitting resolution improved the simulations of heavy precipitation extremes over JJJ compared with RegCM4 with a hydrostatic core and resolution of 12 km. In addition, RegCM4‐NH with CLM4.5 performed better at simulating heavy precipitation extremes over JJJ compared with all other simulations, with higher correlation coefficients and larger relative root mean squared errors.

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Impacts of Large‐Scale Urbanization and Irrigation on Summer Precipitation in the Mid‐Atlantic Region of the United States

Abstract: Land use and land cover (LULC) change plays a vital role in climate, weather extremes, hydrological cycle, ecosystems, biodiversity, air quality, and human society at multiple scales (

Cited by 12 publications

References 87 publications

Interplay Between Urbanization and Irrigation on Summer Climate in the Huang‐Huai‐Hai Plain, China

Interplay Between Urbanization and Irrigation on Summer Climate in the Huang‐Huai‐Hai Plain, China

Rain-fed to irrigation-fed transition of agriculture exacerbates meteorological drought in cropped regions but moderates elsewhere

Performance of regional climate model RegCM4 with a hydrostatic or non‐hydrostatic dynamic core at simulating precipitation extremes in China

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