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Advances in Atmospheric Sciences 2007年第2期24卷 191-198页

作者： Laura DE LA TORRE luis gimeno Juan Antonio AEL Raquel NIETO Universidad de Vigo Facultad de Ciencias de Ourense 32004OurenseSpain

The North Atlantic Oscillation （NAO） is one of the leading modes of climate variability in the Northern Hemisphere. It has been shown that it clearly relates to changes in meteorological variables, such as surface temperature, at hemispherical scales. However, recent studies have revealed that the NAO spatial pattern also depends upon solar forcing. Therefore, its effects on meteorological variables must vary depending upon this factor. Moreover, it could be that the Sun affects climate through variability patterns, a hypothesis that is the focus of this study. We find that the relationship between the NAO/AO and hemispheric temperature varies depending upon solar activity. The results show a positive significant correlation only when solar activity is high. Also, the results support the idea that solar activity influences tropospheric climate fluctuations in the Northern Hemisphere via the fluctuations of the stratospheric polar vortex .

关键词： solar activity North Atlantic Oscillation Arctic Oscillation Northern Hemisphere surface temperature

Estimation of mean water vapour residence time during tropical cyclones using a Lagrangian approach

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Tropical Cyclone Research and Review 2022年第2期11卷 76-87页

作者： Albenis Perez-Alarcon Patricia Coll-Hidalgo Jose C.Fernandez-Alvarez Raquel Nieto luis gimeno Centro de Investigacion Marina Universidade de VigoEnvironmental Physics Laboratory(EPhysLab)OurenseSpain Departamento de Meteorología Instituto Superior de Tecnologías y Ciencias AplicadasUniversidad de La HabanaLa HabanaCuba Departamento de Meteorología Empresa Cubana de Navegacion AereaLa HabanaCuba

Tropical cyclone(TC)-related rainfall mostly depends on the atmospheric moisture uptake from local and remote *** this study,the mean water vapour residence time(MWVRT)was computed for precipitation related to TCs in each basin and on a global scale by applying a Lagrangian moisture source diagnostic *** to our results,the highest MWVRT was found for the TCs over the South Indian Ocean and South Pacific Ocean basins(~3.08 days),followed by the Western North Pacific Ocean,Central and East North Pacific Ocean,North Indian Ocean,and North Atlantic Ocean basins(which exhibited values of 2.98,2.94,2.85,and 2.72 days,respectively).We also found a statistically significant(p<0.05)decrease in MWVRT,at a rate of~2.4 h/decade in the North Indian Ocean and~1.0 h/decade in the remaining *** average,the MWVRT decreased during the 24 h before TCs made landfall,and the atmospheric parcels precipitated faster after evaporation when TCs moved over land than over the *** research should focus on the relationship between global warming and MWVRT of atmospheric parcels that precipitate over TC positions.

关键词： Tropical cyclones Water vapour residence time Lagrangian approach Tropical cyclones precipitation

Insights into the origin of precipitation moisture for tropical cyclones during rapid intensification process

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Tropical Cyclone Research and Review 2024年第2期13卷 72-87页

作者： Albenis Perez-Alarcon Jose C.Fernandez-Alvarez Ricardo M.Trigo Raquel Nieto luis gimeno Centro de Investigacion Mari~na Universidade de VigoEnvironmental Physics Laboratory(EPhysLab)Campus As Lagoas s/nOurenseSpain Departamento de Meteorología Instituto Superior de Tecnologías y Ciencias AplicadasUniversidad de La HabanaLa HabanaCuba Instituto Dom Luiz(IDL) Facultade de Ci^enciasUniversidade de LisboaLisboaPortugal Departamento de Meteorologia Universidade Federal do Rio de JaneiroRio de JaneiroBrazil

In this study,we identiﬁed the moisture sources for the precipitation associated with tropical cyclones(TCs)during the rapid intensiﬁcation(RI)process from 1980 to 2018 by applying a Lagrangian moisture source diagnostic *** detected sixteen regions on a global scale for RI events distributed as follows:four in the North Atlantic(NATL),two in the Central and East Paciﬁc Ocean(NEPAC),the North Indian Ocean(NIO)and South Indian Ocean(SIO),and three in the South Paciﬁc Ocean(SPO)and the Western North Paciﬁc Ocean(WNP).The moisture uptake(MU)mostly was from the regions where TCs underwent *** Western NATL,tropical NATL,Caribbean Sea,the Gulf of Mexico and the Central America and Mexico landmass supported~85.4%of the precipitating moisture in the NATL,while the latter source and the eastern North Paciﬁc Ocean provided the higher amount of moisture in NEPAC(~84.3%).The Arabian Sea,the Bay of Bengal and the Indian Peninsula were the major moisture sources in NIO,contributing approximately 81.3%.The eastern and western parts of the Indian Ocean supplied most of the atmospheric humidity in SIO(~83.8%).The combined contributions(~87.9%)from the western and central SPO and the Coral Sea were notably higher in ***,TCs in the WNP basin mostly received moisture from the western North Paciﬁc Ocean,the Philippine Sea and the China Sea,accounting for 80.1%.The remaining moisture support in each basin came from the summed contributions of the remote ***,RI TCs gained more moisture up to 2500 km from the cyclone centre than those slow intensiﬁcation(SI)and the total MU was approximately three times higher during RI than ***,the patterns of the MU differences respond to the typical pathways of moisture transport in each basin.

关键词： Tropical cyclones Rapid intensiﬁcation Moisture sources Precipitation Lagrangian moisture tracking

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气候研究趋势与方向

国外科技新书评介 2009年第9期 14-15页

作者： luis gimeno Ricardo Garcia-Herrera RicardoMachado Trigo Blackweil 张永杰不详中国科学院力学研究所

目前气候变化已经是人人皆知的现象了。海平面上升，冰川退缩，这些现象与人类生存息息相关，引起了科学家们的广泛关注。随着科学界气候变化意识的加强，与气候相关的研究越来越多，增长非常迅速。而气候研究的主要目的正是理解气候系... 详细信息

目前气候变化已经是人人皆知的现象了。海平面上升，冰川退缩，这些现象与人类生存息息相关，引起了科学家们的广泛关注。随着科学界气候变化意识的加强，与气候相关的研究越来越多，增长非常迅速。而气候研究的主要目的正是理解气候系统中各种因素相互作用的本质机理，并得到影响气候变化的主要因素。

关键词：气候变化海平面上升冰川退缩人类生存相互作用气候系统科学家

Narrow band imaging and white light endoscopy in the characterization of a polypectomy scar:A single-blind observational study

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World Journal of Gastroenterology 2018年第45期24卷 5179-5188页

作者： Fausto Riu Pons Montserrat Andreu Javier gimeno Beltran Marco Antonioálvarez-Gonzalez Agustín Seoane Urgorri Josep Maria Dedeu luis Barranco Priego Xavier Bessa Gastroenterology Department Hospital del MarBarcelona 08003Spain IMIM(Hospital del Mar Medical Research Institute) Barcelona 08003Spain Department of Medicine Autonomous University of BarcelonaBarcelona 08003Spain Pompeu Fabra University Barcelona 08003Spain Pathology Department Hospital del MarBarcelona 08003Spain.

AIM To assess the incremental benefit of narrow band imaging(NBI) and white light endoscopy(WLE), randomizing the initial technique for the detection of residual neoplasia at the polypectomy scar after an endoscopic piecemeal mucosal resection(EPMR).METHODS We conducted an observational study in an academic center to assess the incremental benefit of NBI and WLE randomly applied 1:1(NBI-WLE or WLE-NBI) in the follow-up of a post-EPMR scar by the same *** A total of 112 EPMR scars were included. The median baseline polyp size was 20 mm(interquartile range: 14-30). At first review, NBI and WLE showed good sensitivity(85.0% vs 78.9%), specificity(77.1% vs 84.2%) and overall accuracy(80.0% vs 82.5%). NBI after WLE(WLE-NBI group) improved accuracy, but this difference was not statistically significant [area under the curve(AUC): 86.8% vs 81.6%, P = 0.15]. WLE after NBI(NBI-WLE group) did not improve accuracy(AUC: 81.4% vs 81.1%, P = 0.9). Overall, recurrence was found in 39/112(34.8%) *** Although no statistically significant differences were found between the two techniques at the first postEPMR assessment, the use of NBI after WLE may improve residual neoplasia detection. Nevertheless, biopsy is still required in the first scar review.

关键词： Colonoscopy Narrow band imaging Endoscopic mucosal resection

Influence of the Type of Circulatory/Ventricular Assistance in the Primary Graft Failure and Heart Transplantation Mortality

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World Journal of Cardiovascular Diseases 2019年第8期9卷 545-552页

作者： Raquel López-Vilella Ignacio J.Sánchez-Lázaro María Paz Fuset Cabanes Azucena Pajares Moncho Lucía Donate Bertolín Ricardo gimeno Costa Ignacio Moreno Puigdollers luis Martínez Dolz Iratxe Zarragoikoetxea Jauregui Salvador Torregrosa Puerta luis Almenar Bonet Heart Failure and Transplant Unit Hospital Universitario y Politécnico La FeValenciaSpain Intensive Care Department Hospital Universitario y Politécnico La FeValenciaSpain Anesthesiology Department Hospital Universitario y Politécnico La FeValenciaSpain Cardiovascular Surgery Department Hospital Universitario y Politécnico La FeValenciaSpain

OBJECTIVES: In recent years, the percentage of heart transplantation (HT) with short/medium-term assistance devices has increased. This study aims at analyzing primary graft failure and in-hospital mortality according to the type of care. MATERIAL AND METHODS: From January 2013 to December?2017 all patients undergoing urgent HT with circulatory/ventricular assistance?were retrospectively and consecutively recruited. Combined transplants, retransplantations and pediatric transplants were excluded. The sample was divided in 10 groups according to the type of shot/medium term assistance devices. RESULTS: A total of 53 patients were recruited, 79% men, average age 49 ± 13 years. 26 patients (51%) had mechanical ventilation at the time of the HT. Primary graft failure occurred in 20 patients (38.5%), whilst it was more frequent in patients assisted with ECMO (8 patients in group 1 (45%) and 7 in group 2 (54%), p 0.5). 14 deaths (27%) were registered, whereas a higher mortality was observed in the group assisted with ECMO (6 patients in group 1 (34%) and 4 in group 2 (31%), p 0.6). Mortality was 17% in the group of non-urgent Levitronix. CONCLUSIONS: Despite not showing statistical significance due to the low number of patients in some subgroups, hospital?mortality was high in HT patients with circulatory assistance. A trend towards a higher incidence of primary graft failure and mortality in patients assisted with ECMO was observed. The direct implantation of a centrifugal pump as a bridge to urgent transplantation could identify a subgroup with a better prognosis.

关键词： Urgent Heart Transplantation Short-Medium Term Circulatory/Ventricular Assistance Primary Graft Failure