{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:18:50.782000", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2022-Mar-02_to_2022-Mar-05_114.0_31.5"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2022030001402}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "March 02 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 05 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 245002.8048241621}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["China"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 31.5}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 114.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "114.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 111.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 119.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 27.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 33.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[111.25, 34.15], [111.5, 34.25], [111.75, 34.15], [112.0, 34.25], [112.53, 34.03], [112.68, 33.68], [112.75, 33.65], [113.0, 33.75], [113.25, 33.65], [113.5, 33.75], [114.03, 33.53], [114.18, 33.18], [114.25, 33.15], [114.5, 33.25], [114.75, 33.15], [115.0, 33.25], [115.53, 33.03], [115.75, 32.5], [115.65, 32.25], [115.68, 32.18], [115.75, 32.15], [116.0, 32.25], [116.53, 32.03], [116.7, 31.63], [117.0, 31.75], [117.53, 31.53], [117.68, 31.18], [117.75, 31.15], [118.0, 31.25], [118.53, 31.03], [118.68, 30.68], [119.03, 30.53], [119.18, 30.18], [119.53, 30.03], [119.75, 29.5], [119.65, 29.25], [119.68, 29.18], [120.03, 29.03], [120.25, 28.5], [120.03, 27.97], [119.68, 27.82], [119.53, 27.47], [119.18, 27.32], [119.03, 26.97], [118.5, 26.75], [118.25, 26.85], [118.0, 26.75], [117.75, 26.85], [117.5, 26.75], [117.25, 26.85], [117.0, 26.75], [116.75, 26.85], [116.5, 26.75], [115.97, 26.97], [115.75, 27.5], [115.97, 28.03], [116.38, 28.2], [116.25, 28.5], [116.35, 28.75], [116.32, 28.82], [116.25, 28.85], [116.0, 28.75], [115.75, 28.85], [115.5, 28.75], [115.25, 28.85], [115.18, 28.82], [115.03, 28.47], [114.5, 28.25], [113.97, 28.47], [113.82, 28.82], [113.75, 28.85], [113.5, 28.75], [112.97, 28.97], [112.75, 29.5], [112.85, 29.75], [112.82, 29.82], [112.47, 29.97], [112.25, 30.5], [112.35, 30.75], [112.32, 30.82], [111.97, 30.97], [111.75, 31.5], [111.85, 31.75], [111.8, 31.88], [111.5, 31.75], [110.97, 31.97], [110.82, 32.32], [110.47, 32.47], [110.25, 33.0], [110.35, 33.25], [110.25, 33.5], [110.47, 34.03], [111.0, 34.25], [111.25, 34.15]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-03-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[112.25, 32.0], [112.47, 32.53], [113.0, 32.75], [113.25, 32.65], [113.5, 32.75], [113.75, 32.65], [114.0, 32.75], [114.53, 32.53], [114.68, 32.18], [114.75, 32.15], [115.0, 32.25], [115.25, 32.15], [115.5, 32.25], [116.03, 32.03], [116.18, 31.68], [116.53, 31.53], [116.75, 31.0], [116.53, 30.47], [116.0, 30.25], [115.7, 30.38], [115.53, 29.97], [115.13, 29.8], [115.25, 29.5], [115.03, 28.97], [114.5, 28.75], [114.25, 28.85], [114.0, 28.75], [113.75, 28.85], [113.5, 28.75], [112.97, 28.97], [112.75, 29.5], [112.97, 30.03], [113.32, 30.18], [113.35, 30.25], [113.32, 30.32], [113.25, 30.35], [113.0, 30.25], [112.47, 30.47], [112.25, 31.0], [112.46, 31.5], [112.25, 32.0]]]]}, "2022-03-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[110.25, 33.5], [110.47, 34.03], [111.0, 34.25], [111.25, 34.15], [111.5, 34.25], [111.75, 34.15], [112.0, 34.25], [112.53, 34.03], [112.68, 33.68], [112.75, 33.65], [113.0, 33.75], [113.25, 33.65], [113.5, 33.75], [114.03, 33.53], [114.18, 33.18], [114.25, 33.15], [114.5, 33.25], [114.75, 33.15], [115.0, 33.25], [115.53, 33.03], [115.75, 32.5], [115.65, 32.25], [115.68, 32.18], [115.75, 32.15], [116.0, 32.25], [116.53, 32.03], [116.7, 31.63], [117.0, 31.75], [117.53, 31.53], [117.68, 31.18], [117.75, 31.15], [118.0, 31.25], [118.53, 31.03], [118.68, 30.68], [119.03, 30.53], [119.18, 30.18], [119.53, 30.03], [119.75, 29.5], [119.65, 29.25], [119.68, 29.18], [120.03, 29.03], [120.25, 28.5], [120.03, 27.97], [119.68, 27.82], [119.53, 27.47], [119.18, 27.32], [119.03, 26.97], [118.5, 26.75], [118.25, 26.85], [118.0, 26.75], [117.75, 26.85], [117.5, 26.75], [117.25, 26.85], [117.0, 26.75], [116.75, 26.85], [116.5, 26.75], [115.97, 26.97], [115.75, 27.5], [115.97, 28.03], [116.38, 28.2], [116.25, 28.5], [116.35, 28.75], [116.32, 28.82], [116.25, 28.85], [116.0, 28.75], [115.75, 28.85], [115.5, 28.75], [115.25, 28.85], [115.18, 28.82], [115.03, 28.47], [114.5, 28.25], [113.97, 28.47], [113.82, 28.82], [113.75, 28.85], [113.5, 28.75], [112.97, 28.97], [112.75, 29.5], [112.85, 29.75], [112.82, 29.82], [112.47, 29.97], [112.25, 30.5], [112.35, 30.75], [112.32, 30.82], [111.97, 30.97], [111.75, 31.5], [111.85, 31.75], [111.8, 31.88], [111.5, 31.75], [110.97, 31.97], [110.82, 32.32], [110.47, 32.47], [110.25, 33.0], [110.35, 33.25], [110.25, 33.5]]]]}, "2022-03-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[110.25, 33.5], [110.47, 34.03], [111.0, 34.25], [111.25, 34.15], [111.5, 34.25], [111.75, 34.15], [112.0, 34.25], [112.53, 34.03], [112.68, 33.68], [112.75, 33.65], [113.0, 33.75], [113.25, 33.65], [113.5, 33.75], [114.03, 33.53], [114.18, 33.18], [114.25, 33.15], [114.5, 33.25], [114.75, 33.15], [115.0, 33.25], [115.53, 33.03], [115.75, 32.5], [115.65, 32.25], [115.68, 32.18], [115.75, 32.15], [116.0, 32.25], [116.53, 32.03], [116.7, 31.63], [117.0, 31.75], [117.53, 31.53], [117.68, 31.18], [117.75, 31.15], [118.0, 31.25], [118.53, 31.03], [118.68, 30.68], [119.03, 30.53], [119.18, 30.18], [119.53, 30.03], [119.75, 29.5], [119.65, 29.25], [119.68, 29.18], [120.03, 29.03], [120.25, 28.5], [120.03, 27.97], [119.68, 27.82], [119.53, 27.47], [119.18, 27.32], [119.03, 26.97], [118.5, 26.75], [118.25, 26.85], [118.0, 26.75], [117.75, 26.85], [117.5, 26.75], [117.25, 26.85], [117.0, 26.75], [116.75, 26.85], [116.5, 26.75], [115.97, 26.97], [115.75, 27.5], [115.97, 28.03], [116.38, 28.2], [116.25, 28.5], [116.35, 28.75], [116.32, 28.82], [116.25, 28.85], [116.0, 28.75], [115.75, 28.85], [115.5, 28.75], [115.25, 28.85], [115.18, 28.82], [115.03, 28.47], [114.5, 28.25], [113.97, 28.47], [113.82, 28.82], [113.75, 28.85], [113.5, 28.75], [112.97, 28.97], [112.75, 29.5], [112.85, 29.75], [112.82, 29.82], [112.47, 29.97], [112.25, 30.5], [112.35, 30.75], [112.32, 30.82], [111.97, 30.97], [111.75, 31.5], [111.85, 31.75], [111.8, 31.88], [111.5, 31.75], [110.97, 31.97], [110.82, 32.32], [110.47, 32.47], [110.25, 33.0], [110.35, 33.25], [110.25, 33.5]]]]}, "2022-03-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[110.25, 33.5], [110.47, 34.03], [111.0, 34.25], [111.25, 34.15], [111.5, 34.25], [111.75, 34.15], [112.0, 34.25], [112.53, 34.03], [112.68, 33.68], [112.75, 33.65], [113.0, 33.75], [113.25, 33.65], [113.5, 33.75], [114.03, 33.53], [114.18, 33.18], [114.25, 33.15], [114.5, 33.25], [114.75, 33.15], [115.0, 33.25], [115.53, 33.03], [115.75, 32.5], [115.65, 32.25], [115.68, 32.18], [115.75, 32.15], [116.0, 32.25], [116.53, 32.03], [116.7, 31.63], [117.0, 31.75], [117.53, 31.53], [117.68, 31.18], [117.75, 31.15], [118.0, 31.25], [118.53, 31.03], [118.68, 30.68], [119.03, 30.53], [119.18, 30.18], [119.53, 30.03], [119.75, 29.5], [119.65, 29.25], [119.68, 29.18], [120.03, 29.03], [120.25, 28.5], [120.03, 27.97], [119.68, 27.82], [119.53, 27.47], [119.18, 27.32], [119.03, 26.97], [118.5, 26.75], [118.25, 26.85], [118.0, 26.75], [117.75, 26.85], [117.5, 26.75], [117.25, 26.85], [117.0, 26.75], [116.75, 26.85], [116.5, 26.75], [115.97, 26.97], [115.75, 27.5], [115.97, 28.03], [116.38, 28.2], [116.25, 28.5], [116.35, 28.75], [116.32, 28.82], [116.25, 28.85], [116.0, 28.75], [115.75, 28.85], [115.5, 28.75], [115.25, 28.85], [115.18, 28.82], [115.03, 28.47], [114.5, 28.25], [113.97, 28.47], [113.82, 28.82], [113.75, 28.85], [113.5, 28.75], [112.97, 28.97], [112.75, 29.5], [112.85, 29.75], [112.82, 29.82], [112.47, 29.97], [112.25, 30.5], [112.35, 30.75], [112.32, 30.82], [111.97, 30.97], [111.75, 31.5], [111.85, 31.75], [111.8, 31.88], [111.5, 31.75], [110.97, 31.97], [110.82, 32.32], [110.47, 32.47], [110.25, 33.0], [110.35, 33.25], [110.25, 33.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 8.972472501887012}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.522048116348324}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.098913923795124, 15.308699138800307, 16.175264956779756, 16.071539531180463]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.441624968092015, 19.205869939987792, 18.604087653379395, 19.458052764348906]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.69525624254566, 6.336921981228437, 6.985062633331876, 6.6611448361135315]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.175301600464763, 8.092360798633706, 8.972472501887012, 8.667094896519927]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2874836916390109, 1.6998572902080276, 1.8735477611930897, 1.729488154467612]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4149631405449186, 2.174164404087128, 2.244390753515751, 2.2747953651815966]}}