Leveraging additional VIIRS information to improve wildfire tracking in the western US

See paper publication. This dataset is the list of VIIRS known active fire and candidate fire pixels for large wildfires in the western US, 2020. Column descriptions: longitude. latitude. fire_mask: value of VIIRS level-2 classification, 0-9. <7 indicates candidate fires and 7-9 indicate low, nominal, and high confidence known active fires. confidence: "x" = candidate, "l" = low, "n" = nominal, "h" = high. acq_date: string date of observation in format yyyy-mm-dd. acq_time: string time of observation in format HH:MM UTC. acq_datetime: python datetime object for date + time, UTC. j: column index (or x-position) of the pixel in the swath, used for view zenith angle and pixel size. vza: view zenith angle. sza: solar zenith angle. daynight: D or N from VIIRS L2 product. i750: corresponding colocated i-index in the M bands. j750: corresponding colocated j-index in the M bands. frp: fire radiative power calculated here in this study. frp_old: original fire radiative power calculated in the VIIRS product for known fire pixels. dist_m13b: distance, in degrees, to the nearest known active fire pixel whose calculated background M13 radiance was used in our FRP calculation for candidate fires. geometry: shapely geometry column of lat/lon point in parquet file. satellite: SNPP or NOAA20. fireid: FEDS fire ID. startdate: FEDS fire start date. enddate: FEDS fire end date. name: common fire name pulled from MTBS for the largest 20 fires.

详见已发表论文。本数据集为2020年美国西部大型野火的可见光红外成像辐射仪套件（VIIRS）已知活跃火点与候选火像元列表。各字段说明如下：
1. longitude：经度
2. latitude：纬度
3. fire_mask：VIIRS二级产品分类值，取值范围为0~9。其中，取值小于7的为候选火点，7~9分别对应低置信度、中置信度与高置信度的已知活跃火点
4. confidence：置信度标识，取值"x"代表候选火点，"l"代表低置信度，"n"代表中置信度，"h"代表高置信度
5. acq_date：观测日期，为格式符合yyyy-mm-dd的字符串
6. acq_time：观测时间，为格式符合HH:MM的UTC时间字符串
7. acq_datetime：由观测日期与时间组合而成的UTC时间Python datetime对象
8. j：扫描带内像元的列索引（或x坐标），用于计算观测天顶角与像元尺寸
9. vza：观测天顶角（view zenith angle）
10. sza：太阳天顶角（solar zenith angle）
11. daynight：VIIRS二级产品中的昼夜标识，取值为D（昼）或N（夜）
12. i750：M波段中对应的匹配像元i索引
13. j750：M波段中对应的匹配像元j索引
14. frp：本研究中计算得到的火点辐射功率（fire radiative power, FRP）
15. frp_old：VIIRS产品针对已知火像元计算得到的原始火点辐射功率
16. dist_m13b：与最近的已知活跃火像元的角度距离（单位：度），该像元的背景M13波段辐射亮度计算值被用于本研究候选火点的FRP计算
17. geometry：Parquet文件中存储的经纬度点的Shapely几何列
18. satellite：搭载传感器的卫星平台，取值为SNPP或NOAA20
19. fireid：FEDS火点标识号
20. startdate：FEDS记录的火灾起始日期
21. enddate：FEDS记录的火灾结束日期
22. name：从MTBS数据集中提取的规模排名前20的火灾通用名称