{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:56:43.360555", "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": "2023-Dec-04_to_2023-Dec-07_242.5_37.5"}, "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": 2023120001065}, "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": "December 04 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 07 2023"}, "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": 104737.14528507361}, "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": ["United States"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America"]}, "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": 37.5}, "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": 242.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "242.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 241.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 247.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 34.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 38.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-118.54, 36.5], [-118.75, 37.0], [-118.65, 37.25], [-118.68, 37.32], [-119.03, 37.47], [-119.18, 37.82], [-119.53, 37.97], [-119.75, 38.5], [-119.53, 39.03], [-119.0, 39.25], [-118.75, 39.15], [-118.5, 39.25], [-118.25, 39.15], [-118.0, 39.25], [-117.75, 39.15], [-117.5, 39.25], [-116.97, 39.03], [-116.75, 38.5], [-116.85, 38.25], [-116.75, 38.0], [-116.85, 37.75], [-116.82, 37.68], [-116.75, 37.65], [-116.5, 37.75], [-116.25, 37.65], [-116.0, 37.75], [-115.5, 37.54], [-115.0, 37.75], [-114.75, 37.65], [-114.5, 37.75], [-113.97, 37.53], [-113.75, 37.0], [-113.97, 36.47], [-114.32, 36.32], [-114.35, 36.25], [-114.25, 36.0], [-114.35, 35.75], [-114.32, 35.68], [-114.25, 35.65], [-114.0, 35.75], [-113.75, 35.65], [-113.5, 35.75], [-112.97, 35.53], [-112.82, 35.18], [-112.47, 35.03], [-112.25, 34.5], [-112.47, 33.97], [-113.0, 33.75], [-113.53, 33.97], [-113.68, 34.32], [-113.75, 34.35], [-114.0, 34.25], [-114.25, 34.35], [-114.32, 34.32], [-114.47, 33.97], [-115.0, 33.75], [-115.53, 33.97], [-115.68, 34.32], [-115.75, 34.35], [-115.82, 34.32], [-115.97, 33.97], [-116.5, 33.75], [-117.0, 33.96], [-117.5, 33.75], [-118.03, 33.97], [-118.18, 34.32], [-118.53, 34.47], [-118.75, 35.0], [-118.65, 35.25], [-118.75, 35.5], [-118.65, 35.75], [-118.75, 36.0], [-118.54, 36.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.North-America", "N.Central-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-12-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-117.25, 36.0], [-117.47, 35.47], [-118.0, 35.25], [-118.53, 35.47], [-118.75, 36.0], [-118.53, 36.53], [-118.0, 36.75], [-117.47, 36.53], [-117.25, 36.0]]], [[[-119.75, 38.5], [-119.53, 39.03], [-119.0, 39.25], [-118.75, 39.15], [-118.5, 39.25], [-117.97, 39.03], [-117.80000000000001, 38.63], [-117.5, 38.75], [-116.97, 38.53], [-116.75, 38.0], [-116.85, 37.75], [-116.75, 37.5], [-116.97, 36.97], [-117.5, 36.75], [-117.75, 36.85], [-118.0, 36.75], [-118.53, 36.97], [-118.68, 37.32], [-119.03, 37.47], [-119.18, 37.82], [-119.53, 37.97], [-119.75, 38.5]]]]}, "2023-12-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-119.53, 37.97], [-119.75, 38.5], [-119.53, 39.03], [-119.0, 39.25], [-118.75, 39.15], [-118.5, 39.25], [-118.25, 39.15], [-118.0, 39.25], [-117.75, 39.15], [-117.5, 39.25], [-116.97, 39.03], [-116.75, 38.5], [-116.85, 38.25], [-116.75, 38.0], [-116.85, 37.75], [-116.82, 37.68], [-116.75, 37.65], [-116.5, 37.75], [-116.25, 37.65], [-116.0, 37.75], [-115.5, 37.54], [-115.0, 37.75], [-114.75, 37.65], [-114.5, 37.75], [-113.97, 37.53], [-113.75, 37.0], [-113.97, 36.47], [-114.32, 36.32], [-114.35, 36.25], [-114.25, 36.0], [-114.35, 35.75], [-114.32, 35.68], [-114.25, 35.65], [-114.0, 35.75], [-113.75, 35.65], [-113.5, 35.75], [-112.97, 35.53], [-112.82, 35.18], [-112.47, 35.03], [-112.25, 34.5], [-112.47, 33.97], [-113.0, 33.75], [-113.53, 33.97], [-113.68, 34.32], [-113.75, 34.35], [-114.0, 34.25], [-114.25, 34.35], [-114.32, 34.32], [-114.47, 33.97], [-115.0, 33.75], [-115.53, 33.97], [-115.68, 34.32], [-115.75, 34.35], [-115.82, 34.32], [-115.97, 33.97], [-116.5, 33.75], [-117.0, 33.96], [-117.5, 33.75], [-118.03, 33.97], [-118.18, 34.32], [-118.53, 34.47], [-118.75, 35.0], [-118.65, 35.25], [-118.75, 35.5], [-118.65, 35.75], [-118.75, 36.0], [-118.53999999999999, 36.5], [-118.75, 37.0], [-118.65, 37.25], [-118.68, 37.32], [-119.03, 37.47], [-119.18, 37.82], [-119.53, 37.97]]]]}, "2023-12-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-119.53, 37.97], [-119.75, 38.5], [-119.53, 39.03], [-119.0, 39.25], [-118.75, 39.15], [-118.5, 39.25], [-118.25, 39.15], [-118.0, 39.25], [-117.75, 39.15], [-117.5, 39.25], [-116.97, 39.03], [-116.75, 38.5], [-116.85, 38.25], [-116.75, 38.0], [-116.85, 37.75], [-116.82, 37.68], [-116.75, 37.65], [-116.5, 37.75], [-116.25, 37.65], [-116.0, 37.75], [-115.5, 37.54], [-115.0, 37.75], [-114.75, 37.65], [-114.5, 37.75], [-113.97, 37.53], 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evolution of mean t2m anomalies.", "value": [5.4415039750652126, 4.805713906479026, 5.093552246091222, 5.57228056809908]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.047814221804515, 6.0047741953598575, 6.617857972831871, 8.458650491145306]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3350438911737332, 1.5009534588048181, 1.5269297121606746, 1.6669703402332576]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4537088289116662, 1.9457105913038917, 1.8347260760225779, 2.609765335591416]}}