Land–atmosphere interaction over the Indo-China Peninsula during spring and its effect on the following summer climate over the Yangtze River basin

Gao, Chujie; Chen, Haishan; Li, Gen; Ma, Hedi; Li, Xinyu; Long, Stephen A.; Xu, Bochao; Li, Xing; Zeng, Xin-Min; Yan, Hong; Wang, Ziqian; Yang, Song

doi:10.1007/s00382-019-04922-x

Cited by 41 publications

(31 citation statements)

References 70 publications

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“…For regions without significant local sensitivity such as the northeastern United States and YRV, the remote sensitivities may provide useful information for precipitation prediction. There have been some case studies on the nonlocal effect of ET on precipitation in northeastern United States and YRV, which partly supports results in this study (Dirmeyer & Kinter, ; Gao et al, ; Wei et al, ). The spatial distributions of the remote sensitivities bear some relationship to those of the remote moisture contributions, but they are different in detail.…”

Section: Discussionsupporting

confidence: 89%

Sensitivity of land precipitation to surface evapotranspiration: a nonlocal perspective based on water vapor transport

Wei

Dirmeyer

2019

Geophysical Research Letters

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The sensitivity of precipitation over land to surface evapotranspiration (ET) is among the most uncertain issues in land‐atmosphere interactions. Past studies have mostly investigated this issue locally, and it remains a challenge to assess the nonlocal impacts. Here, we use a moisture tracking method and statistical analyses to quantify the sensitivity of precipitation to both local and nonlocal ET. It is found that, in a point‐to‐point sense, boreal summer precipitation is more sensitive to local ET than nonlocal ET for about 2/3 of land areas, while for about 1/5 land areas, precipitation is sensitive to ET of more than 1,000 km away. Remote sensitivities are generally an order of magnitude smaller than local sensitivities, but their combined effect could be large and useful, especially for regions without significant local sensitivities. Future studies of land‐atmosphere interactions should be careful when making local assumptions.

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Section: Discussionsupporting

confidence: 89%

Sensitivity of land precipitation to surface evapotranspiration: a nonlocal perspective based on water vapor transport

Wei

Dirmeyer

2019

Geophysical Research Letters

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“…SM has significant negative correlation with Bowen ratio over most of the LLH (Figure 4a), that is, higher SM may result in stronger (weaker) evapotranspiration (upward thermal transfer), indicating that evapotranspiration (upward thermal transfer) is greatly constrained by SM over the LLH in spring. However, the negative correlation between SM and Bowen ratio is only a necessary but not a sufficient condition of strong SM‐SAT coupling (Seneviratne et al ., 2010; Schwingshackl et al ., 2017; Gao et al ., 2019). Therefore, the correlation between SAT and Bowen ratio is further shown in Figure 4b.…”

Section: Resultsmentioning

confidence: 99%

“…GLDAS‐Noah is forced by a combination of atmospheric analysis, satellite‐based precipitation, and observation‐based radiation fields. Using state‐of‐the‐art land surface modelling and data assimilation techniques, the GLDAS‐Noah SM data set has been widely used in investigating land‐atmosphere interactions (e.g., Wu and Zhang, 2013; Gao et al ., 2019; Xu et al ., 2019). Considering the terrain complexity in LLH, we use monthly GLDAS‐Noah SM data at 0.25° × 0.25° resolution and three layers of 0–10, 10–40, 40–100 cm depth in the present study, including GLDAS‐Noah V1.0 from1979 to1999 and GLDAS‐Noah V2.0 from 2000 to 2016.…”

Section: Methodsmentioning

confidence: 99%

“…Thus, it substantially influences land surface energy budget and water balance, and to a large extent, has a direct impact on local weather and climate, especially in the regions where evapotranspiration is strongly controlled by SM. It can also modify the land surface diabatic heating and land‐sea thermal contrast, thus SM potentially affects large‐scale atmospheric circulations and monsoon systems and has a remote impact on regional‐scale weather and climate (Douville, 2002; Collini et al ., 2008; Zhang and Zuo, 2011; Asharaf et al ., 2012; Koster et al ., 2014; Liu et al ., 2017; Zhong et al ., 2018; Gao et al ., 2019).…”

Section: Introductionmentioning

confidence: 99%

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Assessment of the impact of soil moisture on spring surface air temperature over the low‐latitude highlands of China

Zhao

Pan

et al. 2020

Intl Journal of Climatology

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The low-latitude highlands (LLH) of China are situated in the subtropical southwest China. The spring climatic characteristics of the LLH were previously regarded as being governed by remote sea surface temperature forcing and large-scale atmospheric circulations. Recent studies qualitatively demonstrated that the LLH is a relatively strong soil moisture (SM)-surface air temperature (SAT) coupling region in China during spring. In this study, the quantitative spring SM-SAT coupling (mean of March and April before wet season) is further statistically analysed using two different SM data sources (one reanalysis data set and one land surface assimilation product). The results show that significant negative SM-SAT feedbacks mainly occur in the western and middle part of the LLH. Over these areas, 10-50% of the total SAT variance could be explained by the SM-induced negative feedbacks with a feedback parameter of −0.2 CÁ(standardized SM) −1 to −0.8 CÁ(standardized SM) −1. Further analyses show that SM negatively impacts Bowen ratio in the western and middle part of the LLH where Bowen ratio positively affects

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“…1b) and is greatly in uenced by the El Niño-Southern Oscillation (ENSO) Sun 1992, Wu et al, 2003;Wang et al, 2013;Chen et al, 2017;. For example, during the decay phase of an El Niño event, a signi cant low-level anticyclone maintains over the western North Paci c (WNPAC), indicating the western Paci c Subtropical High (WPSH) is more intense and southward compared to its climatology (Lu and Dong, 2001;Gao et al, 2019). More water vapor is transported into central China due to the anomalous southwesterly winds in the northwestern ank of the WNPAC, thus increasing the rainfall in central China (Chen 2002;Ding 1992; Ding and Wang 2008;Zhou and Yu, 2005).…”

Section: Introductionmentioning

confidence: 99%

The Role of Indian Ocean Warming on Extreme Rainfall in Central China During Early Summer 2020: Without El Niño Influence

Cai

Chen

2021

Preprint

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This study investigates the role of water vapor transport and sea surface temperature (SST) warming in the tropical Indian Ocean (TIO) on the heavy rainfall in central China during boreal early summer. In the past four decades, four significant rainfall events, in 1983, 1998, 2016, and 2020, occured in central China and caused severe floods, in which the year 2020 has the most extreme event. All four events are associated with significant TIO SST warming, associated with a strong and westward extending anomalous anticyclone on the western North Pacific (WNPAC). The anomalous winds in the northwestern flank of the WNPAC bring excess water vapor into central China. The water vapor, mainly carried from the central tropical Pacific, converges in central China and result in heavy rainfall. A theory of regional ocean-atmosphere interaction can well explain the processes, called the Indo-Western Pacific Ocean Capacitor (IPOC) effect. The WNPAC is usually associated with strong El Niño-Southern Oscillation (ENSO), except for the 2020 case. The 2020 event is extraordinary, without ensuring El Niño occurred in the previous winter. In 2020, the significant TIO warming sustained the anomalous WNPAC, inducing the most significant extreme rainfall event in central China. This study reveals that the IPOC effect can dramatically influence the East Asian climate even without involving the ENSO in the Pacific.

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Land–atmosphere interaction over the Indo-China Peninsula during spring and its effect on the following summer climate over the Yangtze River basin

Cited by 41 publications

References 70 publications

Sensitivity of land precipitation to surface evapotranspiration: a nonlocal perspective based on water vapor transport

Sensitivity of land precipitation to surface evapotranspiration: a nonlocal perspective based on water vapor transport

Assessment of the impact of soil moisture on spring surface air temperature over the low‐latitude highlands of China

The Role of Indian Ocean Warming on Extreme Rainfall in Central China During Early Summer 2020: Without El Niño Influence

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