Global Climatologies of Eulerian and Lagrangian Flow Features based on ERA-Interim
Global Climatologies of Eulerian and Lagrangian Flow Features based on ERA-Interim
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DOI：
10.1175/bams-d-15-00299.1
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发表时间：
2017-09
影响因子：
8
通讯作者：
M. Sprenger;G. Fragkoulidis;Hanin Binder;M. Croci‐Maspoli;Pascal Graf;C. Grams;P. Knippertz;E. Madonna;S. Schemm;B. Škerlak;H. Wernli
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文献类型：
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作者：
M. Sprenger;G. Fragkoulidis;Hanin Binder;M. Croci‐Maspoli;Pascal Graf;C. Grams;P. Knippertz;E. Madonna;S. Schemm;B. Škerlak;H. Wernli
摘要本文介绍了一套新编制的基于特征的气候学，从ERA-Interim（1979-2014）中识别。考虑了两类流动特征：（i）急流、对流层顶褶皱、地面锋、气旋和反气旋、块体以及位涡等欧拉气候学;（ii）拉格朗日气候学，基于大量空气包裹轨迹、平流层-对流层交换、温暖传送带和热带水分输出。这些特征气候的月平均值可在苏黎世联邦理工学院的网页（http：//www.example.com）上公开获得，并每年更新。eraiclim.ethz.ch更高分辨率的数据集可应要求从作者处获得。这些特征气候学允许研究大气现象的频率，变化和趋势以及它们在时间尺度上的相互关系。为了说明这个数据集的潜力，北方冬季气候的选定功能，并作为第一个应用程序…
AbstractThis paper introduces a newly compiled set of feature-based climatologies identified from ERA-Interim (1979–2014). Two categories of flow features are considered: (i) Eulerian climatologies of jet streams, tropopause folds, surface fronts, cyclones and anticyclones, blocks, and potential vorticity streamers and cutoffs and (ii) Lagrangian climatologies, based on a large ensemble of air parcel trajectories, of stratosphere–troposphere exchange, warm conveyor belts, and tropical moisture exports. Monthly means of these feature climatologies are openly available at the ETH Zurich web page (http://eraiclim.ethz.ch) and are annually updated. Datasets at higher resolution can be obtained from the authors on request. These feature climatologies allow studying the frequency, variability, and trend of atmospheric phenomena and their interrelationships across temporal scales. To illustrate the potential of this dataset, boreal winter climatologies of selected features are presented and, as a first applicati...