{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:20:39.335207", "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-May-23_to_2022-May-27_239.0_38.5"}, "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": 2022050002655}, "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": "May 23 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 27 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 72841.75358520908}, "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": 38.5}, "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": 239.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "239.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 237.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 240.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 35.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 40.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-121.03, 36.03], [-120.68, 36.18], [-120.53, 36.53], [-120.18, 36.68], [-120.15, 36.75], [-120.18, 36.82], [-120.25, 36.85], [-120.5, 36.75], [-120.75, 36.85], [-121.0, 36.75], [-121.25, 36.85], [-121.5, 36.75], [-122.03, 36.97], [-122.18, 37.32], [-122.25, 37.35], [-122.5, 37.25], [-123.03, 37.47], [-123.25, 38.0], [-123.15, 38.25], [-123.18, 38.32], [-123.53, 38.47], [-123.75, 39.0], [-123.53, 39.53], [-123.18, 39.68], [-123.15, 39.75], [-123.25, 40.0], [-123.03, 40.53], [-122.5, 40.75], [-122.25, 40.65], [-122.0, 40.75], [-121.47, 40.53], [-121.32, 40.18], [-121.25, 40.15], [-121.0, 40.25], [-120.47, 40.03], [-120.25, 39.5], [-120.35, 39.25], [-120.32, 39.18], [-120.25, 39.15], [-120.0, 39.25], [-119.47, 39.03], [-119.25, 38.5], [-119.46, 38.0], [-119.32, 37.68], [-118.97, 37.53], [-118.75, 37.0], [-118.85, 36.75], [-118.75, 36.5], [-118.97, 35.97], [-119.32, 35.82], [-119.35, 35.75], [-119.25, 35.5], [-119.47, 34.97], [-120.0, 34.75], [-120.25, 34.85], [-120.5, 34.75], [-121.03, 34.97], [-121.25, 35.5], [-121.03, 36.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-05-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-120.5, 34.75], [-121.03, 34.97], [-121.25, 35.5], [-121.03, 36.03], [-120.5, 36.25], [-119.97, 36.03], [-119.75, 35.5], [-119.97, 34.97], [-120.5, 34.75]]], [[[-123.03, 39.03], [-122.68, 39.18], [-122.53, 39.53], [-122.0, 39.75], [-121.75, 39.65], [-121.5, 39.75], [-120.97, 39.53], [-120.82, 39.18], [-120.47, 39.03], [-120.25, 38.5], [-120.47, 37.97], [-121.0, 37.75], [-121.25, 37.85], [-121.32, 37.82], [-121.47, 37.47], [-122.0, 37.25], [-122.25, 37.35], [-122.5, 37.25], [-123.03, 37.47], [-123.25, 38.0], [-123.15, 38.25], [-123.25, 38.5], [-123.03, 39.03]]]]}, "2022-05-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-123.53, 38.47], [-123.75, 39.0], [-123.53, 39.53], [-123.18, 39.68], [-123.15, 39.75], [-123.25, 40.0], [-123.03, 40.53], [-122.5, 40.75], [-122.25, 40.65], [-122.0, 40.75], [-121.47, 40.53], [-121.32, 40.18], [-121.25, 40.15], [-121.0, 40.25], [-120.47, 40.03], [-120.25, 39.5], [-120.35, 39.25], [-120.32, 39.18], [-120.25, 39.15], [-120.0, 39.25], [-119.47, 39.03], [-119.25, 38.5], [-119.46000000000001, 38.0], [-119.32, 37.68], [-118.97, 37.53], [-118.75, 37.0], [-118.85, 36.75], [-118.75, 36.5], [-118.97, 35.97], [-119.32, 35.82], [-119.35, 35.75], [-119.25, 35.5], [-119.47, 34.97], [-120.0, 34.75], [-120.25, 34.85], [-120.5, 34.75], [-121.03, 34.97], [-121.25, 35.5], [-121.03, 36.03], [-120.68, 36.18], [-120.53, 36.53], [-120.18, 36.68], [-120.15, 36.75], [-120.18, 36.82], [-120.25, 36.85], [-120.5, 36.75], [-120.75, 36.85], [-121.0, 36.75], [-121.25, 36.85], [-121.5, 36.75], [-122.03, 36.97], [-122.18, 37.32], [-122.25, 37.35], [-122.5, 37.25], [-123.03, 37.47], [-123.25, 38.0], [-123.15, 38.25], [-123.18, 38.32], [-123.53, 38.47]]]]}, "2022-05-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-123.53, 38.47], [-123.75, 39.0], [-123.53, 39.53], [-123.18, 39.68], [-123.15, 39.75], [-123.25, 40.0], [-123.03, 40.53], [-122.5, 40.75], [-122.25, 40.65], [-122.0, 40.75], [-121.47, 40.53], [-121.32, 40.18], [-121.25, 40.15], [-121.0, 40.25], [-120.47, 40.03], [-120.25, 39.5], [-120.35, 39.25], [-120.32, 39.18], [-120.25, 39.15], [-120.0, 39.25], [-119.47, 39.03], [-119.25, 38.5], [-119.46000000000001, 38.0], [-119.32, 37.68], [-118.97, 37.53], [-118.75, 37.0], [-118.85, 36.75], [-118.75, 36.5], [-118.97, 35.97], [-119.32, 35.82], [-119.35, 35.75], [-119.25, 35.5], [-119.47, 34.97], [-120.0, 34.75], [-120.25, 34.85], [-120.5, 34.75], [-121.03, 34.97], [-121.25, 35.5], [-121.03, 36.03], [-120.68, 36.18], [-120.53, 36.53], [-120.18, 36.68], [-120.15, 36.75], [-120.18, 36.82], [-120.25, 36.85], [-120.5, 36.75], [-120.75, 36.85], [-121.0, 36.75], [-121.25, 36.85], [-121.5, 36.75], [-122.03, 36.97], [-122.18, 37.32], [-122.25, 37.35], [-122.5, 37.25], [-123.03, 37.47], [-123.25, 38.0], [-123.15, 38.25], [-123.18, 38.32], [-123.53, 38.47]]]]}, "2022-05-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-123.15, 39.75], [-123.25, 40.0], [-123.03, 40.53], [-122.5, 40.75], [-122.25, 40.65], [-122.0, 40.75], [-121.47, 40.53], [-121.32, 40.18], [-121.25, 40.15], [-121.0, 40.25], [-120.47, 40.03], [-120.25, 39.5], [-120.35, 39.25], [-120.32, 39.18], [-120.25, 39.15], [-120.0, 39.25], [-119.47, 39.03], [-119.25, 38.5], [-119.46000000000001, 38.0], [-119.32, 37.68], [-118.97, 37.53], [-118.75, 37.0], [-118.85, 36.75], [-118.75, 36.5], [-118.97, 35.97], [-119.32, 35.82], [-119.35, 35.75], [-119.25, 35.5], [-119.47, 34.97], [-120.0, 34.75], [-120.53, 34.97], [-120.75, 35.5], [-120.65, 35.75], [-120.75, 36.0], [-120.53, 36.53], [-120.18, 36.68], [-120.15, 36.75], [-120.18, 36.82], [-120.25, 36.85], [-120.5, 36.75], [-120.75, 36.85], [-121.0, 36.75], [-121.25, 36.85], [-121.5, 36.75], [-122.03, 36.97], [-122.25, 37.5], [-122.03, 38.03], [-121.68, 38.18], [-121.65, 38.25], [-121.68, 38.32], [-121.75, 38.35], [-122.0, 38.25], [-122.25, 38.35], [-122.5, 38.25], [-122.75, 38.35], [-123.0, 38.25], [-123.53, 38.47], [-123.75, 39.0], [-123.53, 39.53], [-123.18, 39.68], [-123.15, 39.75]]]]}, "2022-05-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-120.03, 37.53], [-119.5, 37.75], [-118.97, 37.53], [-118.75, 37.0], [-118.97, 36.47], [-119.5, 36.25], [-120.03, 36.47], [-120.25, 37.0], [-120.03, 37.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 11.54615579157229}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.038949506425421}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.881087068530178, 24.82270408346767, 27.279950474768896, 26.12543194303595, 23.591112684747486]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.267378051291246, 30.486180134834456, 33.348186602105045, 31.074438621413094, 23.591112684747486]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.227686615325101, 6.2494671394928485, 8.558411621627496, 6.9050813508324795, 4.653758812473711]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.657632022153791, 8.918582473314075, 11.54615579157229, 8.579076355089455, 4.653758812473711]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6549528966738662, 1.7324232344634283, 2.3515296121274654, 1.7905522714692186, 1.3241118463399377]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9437191327769292, 2.6039991693145486, 3.3190142320854235, 2.364716079469658, 1.3241118463399377]}}