North Atlantic EXtratropical CYCLONE TRAcks and Lagrangian-Derived MOisture Uptake Dataset: ExCyclone-TRAMO (Part III)

Abstract: This dataset focuses on extratropical cyclones (ETCs) over the North Atlantic Ocean (NATL) during the extended winter seasons, spanning from October to April, between 1985 and 2022. The relationship between moisture uptake and precipitation in various mesoscale ETC structures remains an active research area. The provision of moisture parameters through tracer dispersion models enhances our understanding of moisture dynamics, the behaviour of ETCs, and the associated meteorological fields. Description: The dataset was constructed through dynamic downscaling of ERA5 reanalysis data using the Weather Research and Forecasting (WRF) model, in conjunction with the Lagrangian dispersion model FELXPART-WRF. It consists of 6-hourly time intervals with a horizontal resolution of 0.18°. This database is completely described in Coll-Hidalgo, P., Gimeno-Sotelo, L., Fernández-Alvarez, J.C. et al. North Atlantic Extratropical Cyclone Tracks and Lagrangian-Derived Moisture Uptake Dataset. Sci Data 11, 1258 (2024). https://doi.org/10.1038/s41597-024-04091-5 The dataset includes: Detailed tracking of ETCs across the North Atlantic: Date in year-month-day format hh (in UTC): Hour in Coordinated Universal Time latitude (degrees north): Latitude in degrees north longitude (degrees west): Longitude in degrees west MSLP (hPa): Mean sea level pressure in hectopascals (hPa) Radius (km): Cyclone radius in kilometres (km) Last closed isobar (hPa): Pressure at the last closed isobar in hectopascals (hPa) Low-level thermal wind parameter (VTL) High-level thermal wind parameter (VTU) The thermal asymmetry parameter (B) Two-Dimensional Masks Shaping ETCs: Radius Warm Conveyor Belt (WCB) footprint Related Areas A theoretical boundary encompassing a broader extent of the ETC circulation within a spiral shape Cyclone Moisture Uptake-Related Variables by ETCs life timesteps: Total moisture uptake Discrete Moisture Uptake (10-Day Backward) Moisture uptake by layers from the surface to 100 hPa. Dataset Repository Information This repository contains the dataset for the years 1985-1999. For users interested in datasets from subsequent periods, please refer to the following links: Years 1985-1999: Access the dataset hereYears 2000-2014: Access the dataset here A GitHub repository is available, providing example code that demonstrates how to use and handle the dataset effectively.摘要： 本数据集聚焦1985-2022年间延长冬季（10月至次年4月）北大西洋（North Atlantic Ocean, NATL）上空的温带气旋（Extratropical Cyclones, ETCs）。不同中尺度温带气旋结构内的水汽摄取与降水之间的关联仍是当前研究热点。通过示踪物扩散模型获取水汽参数，有助于深化对水汽动力学、温带气旋行为及相关气象场的认知。 数据集说明： 本数据集基于ERA5再分析资料，采用天气研究与预报（Weather Research and Forecasting, WRF）模型结合拉格朗日扩散模型FELXPART-WRF进行动力降尺度构建。数据集采用6小时间隔，水平分辨率为0.18°。该数据库的完整说明参见：Coll-Hidalgo, P., Gimeno-Sotelo, L., Fernández-Alvarez, J.C. 等. 《北大西洋温带气旋轨迹与拉格朗日方法衍生水汽摄取数据集》. Sci Data 11, 1258 (2024). https://doi.org/10.1038/s41597-024-04091-5 本数据集包含以下内容： 1. 北大西洋温带气旋详细追踪信息 - 日期（格式为年-月-日） - hh（UTC时）：协调世界时小时数 - 纬度（北纬度数）：以北纬度数表示的纬度 - 经度（西经度数）：以西经度数表示的经度 - 平均海平面气压（MSLP, hPa）：以百帕为单位的平均海平面气压 - 气旋半径（km）：以千米为单位的气旋半径 - 最内侧闭合等压线气压（hPa）：以百帕为单位的最内侧闭合等压线处气压 - 低层热成风参数（VTL） - 高层热成风参数（VTU） - 热力不对称参数（B） 2. 塑造温带气旋的二维掩码 - 半径 - 暖输送带（Warm Conveyor Belt, WCB）影响相关区域 - 覆盖温带气旋更大范围环流的螺旋状理论边界 3. 按温带气旋生命史时序划分的水汽摄取相关变量 - 总水汽摄取量 - 离散水汽摄取量（10天回溯） - 从地表至100 hPa各分层的水汽摄取量 数据集仓库信息： 本仓库包含1985-1999年的数据集。如需获取后续时段的数据集，请参阅以下链接： - 1985-1999年：[此处访问数据集] - 2000-2014年：[此处访问数据集] 另有GitHub仓库提供示例代码，可演示如何高效使用与处理本数据集。