Atmospheric Research最新文献

筛选
英文 中文
Towards an understanding of uncertainties in the Lagrangian analysis of moisture sources for tropical cyclone precipitation through a study case 通过研究案例了解热带气旋降水水汽源拉格朗日分析的不确定性
IF 4.5 2区 地球科学
Atmospheric Research Pub Date : 2024-11-23 DOI: 10.1016/j.atmosres.2024.107822
Albenis Pérez-Alarcón , Marta Vázquez , Ricardo M. Trigo , Raquel Nieto , Luis Gimeno
{"title":"Towards an understanding of uncertainties in the Lagrangian analysis of moisture sources for tropical cyclone precipitation through a study case","authors":"Albenis Pérez-Alarcón ,&nbsp;Marta Vázquez ,&nbsp;Ricardo M. Trigo ,&nbsp;Raquel Nieto ,&nbsp;Luis Gimeno","doi":"10.1016/j.atmosres.2024.107822","DOIUrl":"10.1016/j.atmosres.2024.107822","url":null,"abstract":"<div><div>Despite the increasing number of atmospheric moisture tracking tools, their validation is challenging due to the lack of observations. This work contributes to a better understanding of uncertainties in the moisture sources analysis for the precipitation of tropical cyclones (TCs) by assessing eight combinations of threshold values in tracking methods based on the Lagrangian water budget equation. We selected as a study case Hurricane Ida that formed in the North Atlantic basin in late August 2021 and extracted the air parcel trajectories from the global outputs of the Lagrangian FLEXPART model. Results indicate that the choice of relative humidity (RH) threshold for filtering precipitating parcels has a noticeable impact on the Lagrangian precipitation estimates. In addition, methods applying the atmospheric boundary layer restriction produce a weaker moisture source pattern than those accounting for moisture uptakes in the whole atmospheric column. In particular, methods imposing an RH restriction along the air parcel trajectories to filter out noise in moisture losses outperform the others, providing more reliable moisture source contributions. We also introduced a simple bias correction approach that further improves the reliability of moisture source representation.</div></div>","PeriodicalId":8600,"journal":{"name":"Atmospheric Research","volume":"314 ","pages":"Article 107822"},"PeriodicalIF":4.5,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142723847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Regional differences in the effects of atmospheric moisture residence time on precipitation isotopes over Eurasia 大气水汽停留时间对欧亚大陆降水同位素影响的区域差异
IF 4.5 2区 地球科学
Atmospheric Research Pub Date : 2024-11-22 DOI: 10.1016/j.atmosres.2024.107813
Qinqin Wang , Yuwei Liu , Guofeng Zhu , Siyu Lu , Longhu Chen , Yinying Jiao , Wenmin Li , Wentong Li , Yuhao Wang
{"title":"Regional differences in the effects of atmospheric moisture residence time on precipitation isotopes over Eurasia","authors":"Qinqin Wang ,&nbsp;Yuwei Liu ,&nbsp;Guofeng Zhu ,&nbsp;Siyu Lu ,&nbsp;Longhu Chen ,&nbsp;Yinying Jiao ,&nbsp;Wenmin Li ,&nbsp;Wentong Li ,&nbsp;Yuhao Wang","doi":"10.1016/j.atmosres.2024.107813","DOIUrl":"10.1016/j.atmosres.2024.107813","url":null,"abstract":"<div><div>Regional variations in atmospheric moisture residence time (RT) highlight the need to obtain independent observation indexes to constrain different model-based estimates. Stable isotopes of oxygen and hydrogen naturally exist in water molecules that can provide such observational constraints. We analyzed the relationship between RT and precipitation isotopes (δ<sup>2</sup>H and δ<sup>18</sup>O) across different climatic zones in Eurasia from 1980 to 2020. Our analysis reveals that: (1) Both precipitation isotopes and RT showed significant increasing trends during 1980–2020. The increase in RT corresponds to weakened net isotopic distillation over Eurasia, suggesting reduced atmospheric circulation intensity under warming conditions. (2) The spatial patterns of RT and precipitation isotopes vary significantly among different moisture source regions, reflecting distinct moisture transport and precipitation formation processes. (3) On long-term scales, RT generally shows positive correlations with precipitation isotopes, except in plateau regions. The RT-δ<sup>18</sup>O relationship exhibits latitude-dependent variations, with similar slopes in regions sharing common moisture sources. These findings enhance our understanding of the long-term controls on precipitation isotopic composition and atmospheric moisture cycling patterns across Eurasia.</div></div>","PeriodicalId":8600,"journal":{"name":"Atmospheric Research","volume":"314 ","pages":"Article 107813"},"PeriodicalIF":4.5,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142723845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sensitivity of dust event simulation to dust emission schemes and meteorological forcing datasets in the Belt and Road regions: A case study
IF 4.5 2区 地球科学
Atmospheric Research Pub Date : 2024-11-22 DOI: 10.1016/j.atmosres.2024.107817
Naidi Ren , Tie Dai , Yueming Cheng , Guangyu Shi
{"title":"Sensitivity of dust event simulation to dust emission schemes and meteorological forcing datasets in the Belt and Road regions: A case study","authors":"Naidi Ren ,&nbsp;Tie Dai ,&nbsp;Yueming Cheng ,&nbsp;Guangyu Shi","doi":"10.1016/j.atmosres.2024.107817","DOIUrl":"10.1016/j.atmosres.2024.107817","url":null,"abstract":"<div><div>This study investigates the sensitivity of dust event simulation to dust emission schemes and meteorological forcing datasets in the Belt and Road regions, which we divided into three dust-affected regions: North Africa, the Middle East-central Asia, and East Asia. The Weather Research and Forecasting model with online coupled chemistry (WRF-Chem) is used to simulate a dust event in the Belt and Road regions from June 15 to 20, 2016. Nine experiments were conducted using three sets of dust emission schemes (GOCART, Goddard Global Ozone Chemistry Aerosol Radiation and Transport; AFWA, Air Force Weather Agency; UoC, University of Cologne) and three meteorological forcing datasets (NCEP FNL, National Centers for Environmental Prediction Final; ECMWF ERA5, European Centre for Medium-Range Weather Forecasts Reanalysis v5; JMA JRA-55, Japan Meteorological Agency 55-year Reanalysis). The accuracy and applicability of the schemes and datasets were verified and evaluated by the global atmospheric reanalysis data, Modern-Era Retrospective analysis for Research and Applications, version 2 (MERRA-2), as well as observed data from the AErosol RObotic NETwork (AERONET) and CloudAerosol Lidar with Orthogonal Polarization (CALIOP). The main conclusions drawn from the simulation of this dust event are as follows: In the Middle East-central Asia and East Asia, the uncertainty in the dust emission schemes is greater than that in the meteorological forcing datasets, while in North Africa, they are comparable. Among the schemes, GOCART is generally more applicable across the three dust-affected regions compared to AFWA and UoC. Additionally, JRA-55 shows a slight advantage over FNL and ERA5 in North Africa and the Middle East-central Asia. Significant differences in the spatial distribution of dust emissions are observed among experiments using different dust emission schemes, whereas slight differences are noted among those with different meteorological forcing datasets; notably, dust optical depth (DOD) distribution closely aligns with dust emissions.</div></div>","PeriodicalId":8600,"journal":{"name":"Atmospheric Research","volume":"314 ","pages":"Article 107817"},"PeriodicalIF":4.5,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142746462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The modulation effect of the Victoria mode on the uncertainty connection between ENSO and winter European surface air temperature 维多利亚模式对厄尔尼诺/南方涛动与冬季欧洲地表气温之间不确定性联系的调节作用
IF 4.5 2区 地球科学
Atmospheric Research Pub Date : 2024-11-20 DOI: 10.1016/j.atmosres.2024.107815
Kai Ji , Ruiqiang Ding , Linlu Mei
{"title":"The modulation effect of the Victoria mode on the uncertainty connection between ENSO and winter European surface air temperature","authors":"Kai Ji ,&nbsp;Ruiqiang Ding ,&nbsp;Linlu Mei","doi":"10.1016/j.atmosres.2024.107815","DOIUrl":"10.1016/j.atmosres.2024.107815","url":null,"abstract":"<div><div>While El Niño-Southern Oscillation (ENSO) has widespread impacts on the climate around the Pacific and North America, the relationship between ENSO and winter surface air temperature (SAT) in Europe is less well established. This study investigates the modulation effects of the spring Victoria mode (VM) on the weak ENSO–SAT connection in the following winter based on reanalysis data and numerical experiments. It is shown that the connection between ENSO and the winter SAT in central Europe has a significant and positive (negative) correlation during the positive (negative) VM phase. Further analysis shows that the sea surface temperature (SST) anomalies associated with ENSO play an important role in the VM modulation. For the positive VM phase, ENSO combined with the SST warming mode in the western North Pacific induces the East Atlantic teleconnection pattern, which strengthens the anomalous warm advection and leads to the positive SAT anomalies in central Europe. In contrast, for the negative VM phase, ENSO could trigger a negative North Atlantic Oscillation pattern through intermediate SST anomalies in the tropical North Pacific, favoring the formation of the negative central European SAT anomalies. The remarkable modulation effect of the VM on the connection between ENSO and winter central European SAT is further verified through forced experiments using an atmospheric model. This could provide hope that ENSO can make predictions for the winter SAT in central Europe, considering the phase of the preceding spring VM.</div></div>","PeriodicalId":8600,"journal":{"name":"Atmospheric Research","volume":"314 ","pages":"Article 107815"},"PeriodicalIF":4.5,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142723838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Impacts of climate trends on the heavy precipitation event associated with Typhoon Doksuri in Northern China 气候趋势对与台风 "杜苏芮 "有关的华北强降水事件的影响
IF 4.5 2区 地球科学
Atmospheric Research Pub Date : 2024-11-20 DOI: 10.1016/j.atmosres.2024.107816
Ziyu Yan , Zhuo Wang , Melinda Peng
{"title":"Impacts of climate trends on the heavy precipitation event associated with Typhoon Doksuri in Northern China","authors":"Ziyu Yan ,&nbsp;Zhuo Wang ,&nbsp;Melinda Peng","doi":"10.1016/j.atmosres.2024.107816","DOIUrl":"10.1016/j.atmosres.2024.107816","url":null,"abstract":"<div><div>The remnant inland circulation of Typhoon Doksuri induced catastrophic heavy precipitation in July 2023 in the Beijing-Tianjin-Hebei area of China. The role of climate trends in this event is investigated using the pseudo-global warming approach. The control experiment driven by the ERA5 reanalysis captures the intensity and spatial distribution of the heavy precipitation reasonably well. The effects of climate trends are investigated by removing climate trends in various variables from the boundary and initial conditions of the sensitivity experiments. The warming trend of sea surface temperature is found to enhance extreme precipitation intensity, while the specific humidity trend, which is positive over the ocean but negative in some inland regions, has negligible impacts on inland extreme precipitation. The impacts of atmospheric dynamic trends are found to be predominant, which alter the track of the remnant circulation, reduce precipitation intensity, and substantially change the spatial distribution of precipitation. This study highlights the importance of considering atmospheric dynamic trends when assessing the impacts of climate trends on typhoon remnant circulations over land, which may lead to extreme precipitation in regions that have rarely experienced such extremes before.</div></div>","PeriodicalId":8600,"journal":{"name":"Atmospheric Research","volume":"314 ","pages":"Article 107816"},"PeriodicalIF":4.5,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142684194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluating the ALADIN-climate model reanalysis over Central Europe 评估 ALADIN-中欧气候模型再分析
IF 4.5 2区 地球科学
Atmospheric Research Pub Date : 2024-11-19 DOI: 10.1016/j.atmosres.2024.107809
Romana Beranová , Michal Belda , Radmila Brožková , Lucie Pokorná , Jana Popová , Zuzana Rulfová , Zbyněk Sokol
{"title":"Evaluating the ALADIN-climate model reanalysis over Central Europe","authors":"Romana Beranová ,&nbsp;Michal Belda ,&nbsp;Radmila Brožková ,&nbsp;Lucie Pokorná ,&nbsp;Jana Popová ,&nbsp;Zuzana Rulfová ,&nbsp;Zbyněk Sokol","doi":"10.1016/j.atmosres.2024.107809","DOIUrl":"10.1016/j.atmosres.2024.107809","url":null,"abstract":"<div><div>Reanalysis is a well-established tool for monitoring the state of the atmosphere. This study aims at validating the ALADIN-Climate (AC) model reanalysis over Europe with a focus on Central Europe. The AC model is based on the ALARO model configuration and belongs to convection permitting models. Its horizontal resolution is 2.3 km. We evaluated a 25-year long period (1990–2014) and we performed the validation process using measurements from ground-based meteorological data over Europe to assess the ability of the AC model to simulate temperature, precipitation, relative humidity, wind speed, and global radiation. The AC model reanalysis tends to overestimate minimum daily temperature and underestimate maximum daily temperature, with larger differences observed during summer. Winter precipitation totals are overestimated by nearly 50 %, partly due to an overestimation of wet days, while summer precipitation is less overestimated (by 13 %). Relative humidity is consistently overestimated across the model domain in winter, whereas in summer it is variable. Wind speed is overestimated in both summer and winter, and global radiation is also overestimated, especially in winter. Although some variables, like winter precipitation, exhibit significant biases, the overall differences between the AC model reanalysis and station data are consistent with other reanalyses, such as CERRA and ERA5. Biases in the AC model reanalysis are not only caused by the model's imperfections and errors, but also by potential systematic errors at measuring stations. Given its high spatial resolution, this AC regional reanalysis offers a valuable source for further climate studies in Central Europe.</div></div>","PeriodicalId":8600,"journal":{"name":"Atmospheric Research","volume":"314 ","pages":"Article 107809"},"PeriodicalIF":4.5,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142684195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Estimation of radiative effects of deep convective cloud cores using SAPHIR & ScaRaB onboard Megha-Tropiques satellite 利用 Megha-Tropiques 卫星上的 SAPHIR 和 ScaRaB 估算深对流云核的辐射效应
IF 4.5 2区 地球科学
Atmospheric Research Pub Date : 2024-11-19 DOI: 10.1016/j.atmosres.2024.107803
Sisma Samuel , Nizy Mathew , V. Sathiyamoorthy
{"title":"Estimation of radiative effects of deep convective cloud cores using SAPHIR & ScaRaB onboard Megha-Tropiques satellite","authors":"Sisma Samuel ,&nbsp;Nizy Mathew ,&nbsp;V. Sathiyamoorthy","doi":"10.1016/j.atmosres.2024.107803","DOIUrl":"10.1016/j.atmosres.2024.107803","url":null,"abstract":"<div><div>The instantaneous radiative effects of cores of deep convective clouds (CDCCs) linked to well-organised long-lived convective system over the tropics is estimated for the first time using Megha-Tropiques (MT) during 2012‐–2018. Sondeur Atmosphérique du Profil d'Humidité Intertropicale par Radiométrie (SAPHIR) and Scanner for Radiation Budget (ScaRaB) onboard MT provides collocated and concurrent observations of CDCCs and associated fluxes on top-of-the-atmosphere (TOA), respectively. The vertical extent of CDCCs is estimated using collocated and concurrent CloudSat and SAPHIR observations. The CDCCs have a vertical extent above 10 km and their frequency of occurrence peaks between 13 and 16 km. CDCCs exert significant longwave radiative effect over the tropical Africa, northwest Pacific Ocean and northern Bay of Bengal during June–August with values ranging between 160 Wm<sup>−2</sup> and 180 Wm<sup>−2</sup>. Over the convective core regions, the magnitude of day time (08–17 Local time) shortwave radiative effect of CDCCs (SWREC) ranges from −250 Wm<sup>−2</sup> to −650 Wm<sup>−2</sup> with peak values over northern Bay of Bengal and west Pacific Ocean during June to August. The SWREC aligns with both the incoming solar radiation and the occurrence frequency of CDCCs (OFCs), while the diurnal cycle of LWREC follows the OFCs, with a more pronounced variation over land. A diurnal amplitude of 30–40 Wm<sup>−2</sup> is observed in LWREC over the ocean, <span><math><mo>∼</mo></math></span>60 Wm<sup>−2</sup> over land. The CDCCs exert a net radiative cooling ranging from −200 Wm<sup>−2</sup> to −550 Wm<sup>−2</sup> during daytime and a net warming during night time that reaches as high as 160 Wm<sup>−2</sup>.</div></div>","PeriodicalId":8600,"journal":{"name":"Atmospheric Research","volume":"314 ","pages":"Article 107803"},"PeriodicalIF":4.5,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Irrigation-induced decreases in reference evapotranspiration over the North China Plain 灌溉引起的华北平原参考蒸散量减少
IF 4.5 2区 地球科学
Atmospheric Research Pub Date : 2024-11-19 DOI: 10.1016/j.atmosres.2024.107798
Guoshuai Liu , Weiguang Wang , Hui Xu
{"title":"Irrigation-induced decreases in reference evapotranspiration over the North China Plain","authors":"Guoshuai Liu ,&nbsp;Weiguang Wang ,&nbsp;Hui Xu","doi":"10.1016/j.atmosres.2024.107798","DOIUrl":"10.1016/j.atmosres.2024.107798","url":null,"abstract":"<div><div>As a pivotal factor influencing crop water requirement, reference evapotranspiration (ET<sub>0</sub>) plays a crucial role in agricultural water planning and management. Irrigation can exert distinct influences on ET<sub>0</sub> by modifying meteorological conditions through land-atmosphere coupling. While the climatic effects of irrigation in the North China Plain (NCP), the most intensively irrigated area over China, have been explored, the specific impact of irrigation on ET<sub>0</sub> remains unclear. To address this gap, we here employ a regional climate model coupled with a well-validated irrigation scheme to perform idealized simulations to investigate the responding behaviors of ET<sub>0</sub> to irrigation in the NCP from 2005 to 2014. We find that the incorporation of irrigation notably enhances the model performance in modeling ET<sub>0</sub> in the NCP. Irrigation induces an ET<sub>0</sub> decrease of −0.32 mm day<sup>−1</sup> (−29.4 mm year<sup>−1</sup>) in spring and −0.38 mm day<sup>−1</sup> (−35.0 mm year<sup>−1</sup>) in summer and an actual evapotranspiration (ET<sub>a</sub>) increase of 0.49 mm day<sup>−1</sup> (45.1 mm year<sup>−1</sup>) in spring and 0.40 mm day<sup>−1</sup> (36.8 mm year<sup>−1</sup>) in summer, respectively. The irrigation-induced changes in ET<sub>0</sub> and ET<sub>a</sub> adhere to the complementary principle, which stems from the land-atmosphere coupling. The decline in ET<sub>0</sub> is attributed to decreases in surface air temperature and wind speed, coupled with an increase in relative humidity due to irrigation, with the latter playing a paramount role. Furthermore, irrigation decouples the relationship between precipitation and ET<sub>a</sub> and weakens the traditional dependence of ET<sub>a</sub> on local precipitation. This study underscores that the related change in ET<sub>0</sub> due to the climate feedbacks of irrigation should be taken into account in agricultural water planning and management.</div></div>","PeriodicalId":8600,"journal":{"name":"Atmospheric Research","volume":"314 ","pages":"Article 107798"},"PeriodicalIF":4.5,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142684231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Opposite summer precipitation anomalies over the Maritime Continent in fast and slow decaying El Niño cases 在厄尔尼诺现象快速衰减和缓慢衰减的情况下,海洋大陆夏季降水异常现象截然相反
IF 4.5 2区 地球科学
Atmospheric Research Pub Date : 2024-11-19 DOI: 10.1016/j.atmosres.2024.107814
Zhichao Yang , Chujie Gao , Gen Li , Yang Li , Bei Xu , Dezhi Zhang , Zhi Yuan , Xuanke Wang
{"title":"Opposite summer precipitation anomalies over the Maritime Continent in fast and slow decaying El Niño cases","authors":"Zhichao Yang ,&nbsp;Chujie Gao ,&nbsp;Gen Li ,&nbsp;Yang Li ,&nbsp;Bei Xu ,&nbsp;Dezhi Zhang ,&nbsp;Zhi Yuan ,&nbsp;Xuanke Wang","doi":"10.1016/j.atmosres.2024.107814","DOIUrl":"10.1016/j.atmosres.2024.107814","url":null,"abstract":"<div><div>Summer precipitation over the Maritime Continent (MC) is tightly connected to livelihoods of the locals, and the corresponding strong convective activities are also crucial to Asian regional climate variations remotely. Using observational and reanalysis data from 1958 to 2020, we found that El Niño with different decay rates can cause different summer precipitation anomalies in the MC area. In the fast decaying (FD) El Niño summer, the MC area shows a precipitation surplus, while the MC precipitation decreases during the slow decaying (SD) El Niño summer. For the FD El Niño, the equatorial central-eastern Pacific warm sea surface temperature (SST) anomaly quickly turns into cold in the decaying summer, while the SST over MC region sustains a warm anomaly owing to the Indo-western Pacific Ocean capacitor effect. This local warm SST anomaly leads to anomalous ascent and then excessive precipitation, further stimulating low-level easterly wind to east of the MC with increased water vapor transport. For the SD El Niño, the central-eastern Pacific warm SST anomaly sustains till the decaying summer, continuously adjusting the Walker circulation. An anomalous local descent motion associated with the weakened Walker circulation region hampers the MC precipitation in summer. Our findings benefit the local researches of the MC summer climate variations, and potentially favor the regional climate predictions.</div></div>","PeriodicalId":8600,"journal":{"name":"Atmospheric Research","volume":"314 ","pages":"Article 107814"},"PeriodicalIF":4.5,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142700358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synergistic contribution of soil moisture and sea surface temperature to summer Tibetan Plateau temperature 土壤水分和海面温度对青藏高原夏季气温的协同作用
IF 4.5 2区 地球科学
Atmospheric Research Pub Date : 2024-11-19 DOI: 10.1016/j.atmosres.2024.107811
Ting Zhang , Ge Liu , Mingkeng Duan , Yuhan Feng , Yuwei Zhou , Xin Mao , Xinchen Wei , Jingxin Li
{"title":"Synergistic contribution of soil moisture and sea surface temperature to summer Tibetan Plateau temperature","authors":"Ting Zhang ,&nbsp;Ge Liu ,&nbsp;Mingkeng Duan ,&nbsp;Yuhan Feng ,&nbsp;Yuwei Zhou ,&nbsp;Xin Mao ,&nbsp;Xinchen Wei ,&nbsp;Jingxin Li","doi":"10.1016/j.atmosres.2024.107811","DOIUrl":"10.1016/j.atmosres.2024.107811","url":null,"abstract":"<div><div>The Tibetan Plateau, particularly the eastern Tibetan Plateau (ETP), experienced extraordinarily high surface air temperature (SAT) anomalies in summer 2022. This study investigated the impact of anomalous soil moisture (SM) on the SAT over the ETP and explored the synergistic effect of SM and sea surface temperature (SST) anomalies on the ETP SAT during 1961–2022. It is found that the anomalous SM in the region from the eastern European Plain to the western Siberia Plain (EEP-WSP) remarkably affects the summer SAT over the ETP. Corresponding to lower EEP-WSP SM, the overlying upper-level higher geopotential height appears and stimulates downstream wave train from the EEP-WSP region to ETP, thereby affecting atmospheric circulation and associated SAT anomalies over the ETP. Since warmer SST anomalies in the Barents Sea and Black Sea contribute to the lower EEP-WSP SM anomalies (i.e., drier soil), the EEP-WSP SM can be considered a critical factor in bridging the Barents Sea and Black Sea SST anomalies and the ETP SAT. Moreover, the EEP-WSP SM can independently modulate the ETP SAT even when the effects of the SST anomalies are removed. The variability in the EEP-WSP SM is independent of that in the Yellow-Japan Sea (YJS) SST. Accordingly, the EEP-WSP SM and YJS SST can cooperatively and remarkably adjust the summer SAT over the ETP. The synergistic effect of EEP-WSP SM and YJS SST can regulate the ETP SAT on various (interannual, interdecadal, and trend) timescales and explain well the 2022 SAT anomaly over the ETP.</div></div>","PeriodicalId":8600,"journal":{"name":"Atmospheric Research","volume":"314 ","pages":"Article 107811"},"PeriodicalIF":4.5,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信