{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:42.783367", "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": "2021-Sep-09_to_2021-Sep-12_116.5_31.0"}, "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": 2021090001780}, "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": "September 09 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 12 2021"}, "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": 60851.939283544445}, "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": 31.0}, "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": 116.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "116.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 115.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 119.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 30.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 32.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[115.5, 31.75], [116.0, 31.54], [116.32, 31.68], [116.47, 32.03], [117.0, 32.25], [117.3, 32.13], [117.47, 32.53], [117.82, 32.68], [117.97, 33.03], [118.5, 33.25], [118.75, 33.15], [119.0, 33.25], [119.53, 33.03], [119.75, 32.5], [119.65, 32.25], [119.75, 32.0], [119.65, 31.75], [119.75, 31.5], [119.65, 31.25], [119.75, 31.0], [119.53, 30.47], [119.18, 30.32], [119.03, 29.97], [118.5, 29.75], [118.25, 29.85], [118.0, 29.75], [117.75, 29.85], [117.68, 29.82], [117.53, 29.47], [117.0, 29.25], [116.75, 29.35], [116.5, 29.25], [115.97, 29.47], [115.82, 29.82], [115.47, 29.97], [115.32, 30.32], [114.97, 30.47], [114.75, 31.0], [114.97, 31.53], [115.5, 31.75]]]]}}, "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": {"2021-09-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[115.75, 31.0], [115.97, 31.53], [116.32, 31.68], [116.47, 32.03], [117.0, 32.25], [117.3, 32.13], [117.47, 32.53], [117.82, 32.68], [117.97, 33.03], [118.5, 33.25], [118.75, 33.15], [119.0, 33.25], [119.53, 33.03], [119.75, 32.5], [119.65, 32.25], [119.75, 32.0], [119.65, 31.75], [119.75, 31.5], [119.65, 31.25], [119.75, 31.0], [119.53, 30.47], [119.18, 30.32], [119.03, 29.97], [118.5, 29.75], [118.25, 29.85], [118.0, 29.75], [117.75, 29.85], [117.68, 29.82], [117.53, 29.47], [117.0, 29.25], [116.75, 29.35], [116.5, 29.25], [115.97, 29.47], [115.75, 30.0], [115.96, 30.5], [115.75, 31.0]]]]}, "2021-09-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[114.97, 30.47], [114.75, 31.0], [114.97, 31.53], [115.5, 31.75], [116.0, 31.54], [116.32, 31.68], [116.47, 32.03], [117.0, 32.25], [117.3, 32.13], [117.47, 32.53], [117.82, 32.68], [117.97, 33.03], [118.5, 33.25], [118.75, 33.15], [119.0, 33.25], [119.53, 33.03], [119.75, 32.5], [119.65, 32.25], [119.75, 32.0], [119.65, 31.75], [119.75, 31.5], [119.65, 31.25], [119.75, 31.0], [119.53, 30.47], [119.18, 30.32], [119.03, 29.97], [118.5, 29.75], [118.25, 29.85], [118.0, 29.75], [117.75, 29.85], [117.68, 29.82], [117.53, 29.47], [117.0, 29.25], [116.75, 29.35], [116.5, 29.25], [115.97, 29.47], [115.82, 29.82], [115.47, 29.97], [115.32, 30.32], [114.97, 30.47]]]]}, "2021-09-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[114.97, 30.47], [114.75, 31.0], [114.97, 31.53], [115.5, 31.75], [116.0, 31.54], [116.32, 31.68], [116.47, 32.03], [117.0, 32.25], [117.3, 32.13], [117.47, 32.53], [117.82, 32.68], [117.97, 33.03], [118.5, 33.25], [118.75, 33.15], [119.0, 33.25], [119.53, 33.03], [119.75, 32.5], [119.65, 32.25], [119.75, 32.0], [119.65, 31.75], [119.75, 31.5], [119.65, 31.25], [119.75, 31.0], [119.53, 30.47], [119.18, 30.32], [119.03, 29.97], [118.5, 29.75], [118.25, 29.85], [118.0, 29.75], [117.75, 29.85], [117.68, 29.82], [117.53, 29.47], [117.0, 29.25], [116.75, 29.35], [116.5, 29.25], [115.97, 29.47], [115.82, 29.82], [115.47, 29.97], [115.32, 30.32], [114.97, 30.47]]]]}, "2021-09-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[114.97, 30.47], [114.75, 31.0], [114.97, 31.53], [115.5, 31.75], [116.03, 31.53], [116.18, 31.18], [116.25, 31.15], [116.32, 31.18], [116.47, 31.53], [117.0, 31.75], [117.53, 31.53], [117.75, 31.0], [117.65, 30.75], [117.75, 30.5], [117.53, 29.97], [117.0, 29.75], [116.75, 29.85], [116.5, 29.75], [116.25, 29.85], [116.0, 29.75], [115.47, 29.97], [115.32, 30.32], [114.97, 30.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.327665795852454}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.4268567917763533}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.72814599774898, 27.591600794301883, 27.977340526692842, 27.31697205096509]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [29.14447087955915, 29.33341842968116, 29.301288746975217, 28.357254566059567]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.2752463221829466, 3.2429251708553184, 3.7761209508689717, 3.2121248067233297]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.763941883441646, 4.149689559494959, 4.327665795852454, 3.369869606439863]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3339499192919702, 1.3550305678542214, 1.545697357027844, 1.2898783275919214]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4603266011472171, 1.630970149550707, 1.7629296757301194, 1.3548928502930884]}}