Refined and Improved Tropical Storm 6-hourly data and track Sinuosity measurements for the North West Pacific basin during 1977-2016

It’s a 959 Tropical Storms data of North West Pacific during Last 40 Years (1977-2016). The Folder has Two Excel files, one is "Tropical storm Filtered for homogeneity and Improved for track measurements_1977-2016 for North West Pacific". Its description is: This data represents the Name, Year, ISO time, Latitude, Longitude, Maximum Wind Speed in knots, and Minimum Pressure in hPa. This data has been filtered and improved in for homogeneity: (1) All extratropical storm with cyclogenesis beyond tropical region (0–30 degree N) and all out of the Area of Responsibility (AOR) for the RSMC Tokyo–Typhoon Center (0–60 degree N, 100–180 degree E) were removed (n= 22), (2) All 3–hourly and 1–hourly measured datapoints were removed (good for statistical measurements), and (3) Datapoints of Tropical depression stage (maximum wind speed ≤ 35 knots) in start (cyclogenesis) and end (cyclolysis) of each tropical storm are removed. It contains an overall of 959 tropical storm events. The second excel file is "Tropical Storm track Sinuosity Measurements 1977-2016 for North West Pacific". Its description is: This data represents the Name, Year, Duration, Month, Measured Geodesic tropical storm track length, Measured Geodesic tropical storm length between cyclogenesis and cyclolysis, Tropical Storm track sinuosity (S) = (Geodesic storm complete track distance)/(Geodesic distance between cyclogenesis and cyclolysis locations), and Tropical Storm track Sinuosity Index (SI) = ∛(S-1)×10. Geodesic distance was measured through ArcGIS 10.5. Tropical depression stage (maximum wind speed ≤ 35 knots) in start (cyclogenesis) and end (cyclolysis) of each tropical storm are not taken into consideration. The data is useful to explore the spatio-temporal varying patterns of tracks of tropical storms and article can be used by researchers to further explore the physical mechanism behind the various detected spatio-temporal patterns of tracks of storms in the NWP basin and the same techniques can be applied to other Ocean basins of the world.

本数据集涵盖1977年至2016年近40年间西北太平洋海域的热带风暴数据，总计包含959场热带风暴事件。
该文件夹包含两份Excel文件，其一为《针对西北太平洋1977-2016年热带风暴经同质性筛选与路径观测优化后的数据》（"Tropical storm Filtered for homogeneity and Improved for track measurements_1977-2016 for North West Pacific"），其数据说明如下：本数据集包含字段为热带风暴名称、年份、ISO时间（ISO time）、纬度、经度、最大风速（单位：节（knots））与最低气压（单位：百帕（hPa））。该数据已完成同质性筛选与优化处理，具体操作包括：(1) 移除所有在热带区域（0°N~30°N）以外发生气旋生成的温带风暴，以及所有超出东京台风中心（RSMC Tokyo–Typhoon Center）责任区域（Area of Responsibility, AOR）（0°N~60°N，100°E~180°E）的观测记录，共计移除22条；(2) 移除所有3小时间隔与1小时间隔的观测数据点，以适配统计分析需求；(3) 移除每场热带风暴生成阶段（气旋生成初期）与消散阶段（气旋消散末期）的热带低压（Tropical depression）数据点（最大风速≤35节）。
其二为《西北太平洋1977-2016年热带风暴路径弯曲度观测数据》（"Tropical Storm track Sinuosity Measurements 1977-2016 for North West Pacific"），其数据说明如下：本数据集包含字段为热带风暴名称、年份、持续时长、月份、实测测地热带风暴路径总长度、气旋生成至消散阶段的测地风暴路径长度、热带风暴路径弯曲度（S）=（风暴完整测地路径距离）/（气旋生成与消散位置间的测地距离），以及热带风暴路径弯曲度指数（SI）=∛(S-1)×10。测地距离通过ArcGIS 10.5软件测算。每场热带风暴生成与消散阶段的热带低压数据点（最大风速≤35节）未纳入统计。
本数据集可用于探究西北太平洋热带风暴路径的时空变化模式，研究人员可借助该数据进一步剖析西北太平洋海域各类风暴路径时空模式背后的物理机制，且该研究方法亦可推广至全球其他大洋海域。