CEOS/NSIDC Extratropical Cyclone Tracking (CNECT)

This project examines individual cyclone tracks for the Northern Hemisphere. Detection and tracking are conducted using version 12.2 of the cyclone detection and tracking algorithm developed by Crawford & Serreze (2016) applied to ERA-5 sea-level pressure data at a 3-hr temporal resolution and 50 km spatial resolution for the period 1979 – present (updated annually). Each CSV file contains information regarding the location, propagation, intensity, and size of the storm for each observation time. Whether a storm is a multi-center cyclone or interacting (splitting or merging) with other storm systems is also noted. To provide the most complete dataset possible, no subsetting of storms is applied, but for most studies, limiting tracks to only those exceeding some minimum longevity measure (e.g., lifespan ≥ 24 h or track length ≥ 1000 km) is recommended.

本项研究深入探究北半球单个气旋轨迹。检测与追踪工作采用Crawford与Serreze（2016年）开发的气旋检测与追踪算法版本12.2，应用于ERA-5海平面气压数据，时间分辨率为3小时，空间分辨率为50公里，涵盖1979年至今（每年更新）的时段。每个CSV文件均包含每个观测时间点的风暴位置、传播路径、强度和规模等信息。同时，记录风暴是否为多中心气旋或与其他风暴系统相互作用（分裂或合并）。为了提供尽可能完整的 datasets，未对风暴进行子集化处理，但对于大多数研究而言，建议仅限那些超过某些最小持续时间度量（例如，生存期≥24小时或轨迹长度≥1000公里）的轨迹。