气候变化领域集成服务门户(CCPortal): Influence of the Madden-Julian Oscillation on moisture transport by the Caribbean Low Level Jet during the Midsummer Drought in Mexico

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DOI	10.1016/j.atmosres.2020.105243
	Influence of the Madden-Julian Oscillation on moisture transport by the Caribbean Low Level Jet during the Midsummer Drought in Mexico
	Perdigón-Morales J.; Romero-Centeno R.; Ordoñez P.; Nieto R.; Gimeno L.; Barrett B.S.
发表日期	2021
ISSN	0169-8095
卷号	248
英文摘要	This study aims to improve the understanding of the role of the Madden-Julian Oscillation (MJO) in modulating the midsummer drought (MSD) in Mexico. First, the main moisture sources for the MSD region in Mexico during the summer were identified using the Lagrangian particle dispersion model FLEXPART for the period 1979–2017. From this analysis, the Caribbean Sea was identified as one of the main moisture sources, particularly the area where the core of the Caribbean low-level jet (CLLJ) is located. Second, the water vapour flux transported by the CLLJ to Mexico was then analysed. It was found that the summer seasonal cycle of the CLLJ is associated with the bimodal precipitation pattern in Mexico through the seasonal variability of the moisture contribution from the CLLJ to precipitation over the MSD region, thereby confirming the CLLJ as a key element in the occurrence of the MSD in the Americas. Third, the influence of the MJO on this transport was examined. This analysis showed that the locally dry phases of the MJO decrease the contribution of moisture from the CLLJ core towards the MSD region, while the locally wet phases increase it. Moreover, phases 1 and 2 of the MJO were found to influence the first precipitation peak that occurs in the southwestern region of Mexico by increasing the contribution of moisture from the northeastern tropical Pacific. The study ends by proposing, for the first time, a mechanism by which the MJO modulates the MSD in Mexico. © 2020 Elsevier B.V.
英文关键词	Caribbean low-level jet; FLEXPART; Madden-Julian Oscillation; Midsummer drought; Moisture transport
语种	英语
scopus关键词	Drought; Moisture; Lagrangian particle dispersion model; Low level jet; Madden-Julian oscillation; Moisture sources; Moisture transport; Precipitation patterns; Seasonal cycle; Seasonal variability; Climatology; atmospheric moisture; drought; jet stream; Madden-Julian oscillation; moisture transfer; seasonal variation; Atlantic Ocean; Caribbean Sea; Mexico [North America]; Pacific Ocean; Pacific Ocean (Tropical)
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/141680
作者单位	Centro de Ciencias de la Atmósfera, Universidad Nacional Autónoma de México, Mexico City, Mexico; Environmental Physics LABoratory (EPhysLab), CIM-UVIGO, University of Vigo, Ourense, Spain; Oceanography Department, U.S. Naval Academy, Annapolis, MD, United States
推荐引用方式 GB/T 7714	Perdigón-Morales J.,Romero-Centeno R.,Ordoñez P.,et al. Influence of the Madden-Julian Oscillation on moisture transport by the Caribbean Low Level Jet during the Midsummer Drought in Mexico[J],2021,248.
APA	Perdigón-Morales J.,Romero-Centeno R.,Ordoñez P.,Nieto R.,Gimeno L.,&Barrett B.S..(2021).Influence of the Madden-Julian Oscillation on moisture transport by the Caribbean Low Level Jet during the Midsummer Drought in Mexico.Atmospheric Research,248.
MLA	Perdigón-Morales J.,et al."Influence of the Madden-Julian Oscillation on moisture transport by the Caribbean Low Level Jet during the Midsummer Drought in Mexico".Atmospheric Research 248(2021).