{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:17:43.656794", "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-Feb-08_to_2022-Feb-14_237.5_43.5"}, "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": 2022020001692}, "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": "February 08 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 14 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 106824.8000168757}, "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": 43.5}, "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": 237.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "237.5\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": 241.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 43.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 47.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-122.47, 42.47], [-123.0, 42.25], [-123.53, 42.47], [-123.75, 43.0], [-123.53, 43.53], [-123.18, 43.68], [-123.15, 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"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": {"2022-02-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-121.03, 47.53], [-120.5, 47.75], [-119.97, 47.53], [-119.75, 47.0], [-119.97, 46.47], [-120.5, 46.25], [-121.03, 46.47], [-121.25, 47.0], [-121.03, 47.53]]]]}, "2022-02-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-122.53, 44.53], [-122.18, 44.68], [-122.15, 44.75], [-122.25, 45.0], [-122.15, 45.25], [-122.18, 45.32], [-122.53, 45.47], [-122.75, 46.0], [-122.65, 46.25], [-122.75, 46.5], [-122.53, 47.03], [-122.18, 47.18], [-122.03, 47.53], [-121.5, 47.75], [-121.25, 47.65], [-121.18, 47.68], [-121.03, 48.03], [-120.5, 48.25], [-120.25, 48.15], [-120.0, 48.25], [-119.47, 48.03], [-119.25, 47.5], [-119.35, 47.25], [-119.25, 47.0], 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"max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 8.474373105778966}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.190279729787636}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [3.9152389069803917, 5.648615013126459, 6.784475674898715, 6.111402420583261, 5.2221765716598725, 6.1512988011965035, 6.502256271383715]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.9152389069803917, 10.269884082634974, 11.801888785569588, 9.47207279804212, 8.19801200801237, 7.419856088893539, 7.487798135548985]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.286159965803051, 4.912375411716734, 5.867537772082444, 5.147721551431487, 3.9512613417442823, 4.183633104296784, 4.430161230149963]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.286159965803051, 6.9590546337617525, 8.474373105778966, 6.998010408307891, 5.236608333308311, 5.176382972938256, 6.003473425459617]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.0949259844745682, 1.3703426977214122, 1.6923817187078776, 1.5270200340719147, 1.285545838274471, 1.3726322087774525, 1.4064607046754916]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.0949259844745682, 1.8049468327817495, 2.281373387291566, 2.54187754892086, 1.6858011595108824, 1.4090223474276564, 1.5902346070302054]}}