{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:58:27.663011", "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": "2024-Apr-01_to_2024-Apr-03_241.0_51.0"}, "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": 2024040000894}, "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": "April 01 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 03 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 61357.389139968785}, "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": ["Canada", "United States"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "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": 51.0}, "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": 241.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "241.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 240.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 243.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 48.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 52.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-120.53, 52.03], [-120.18, 52.18], [-120.03, 52.53], [-119.5, 52.75], [-119.25, 52.65], [-119.0, 52.75], [-118.47, 52.53], [-118.32, 52.18], [-117.97, 52.03], [-117.75, 51.5], [-117.85, 51.25], [-117.82, 51.18], [-117.75, 51.15], [-117.5, 51.25], [-116.97, 51.03], [-116.75, 50.5], [-116.85, 50.25], [-116.82, 50.18], [-116.47, 50.03], [-116.25, 49.5], [-116.47, 48.97], [-116.82, 48.82], [-116.97, 48.47], [-117.5, 48.25], [-117.75, 48.35], [-118.0, 48.25], [-118.25, 48.35], [-118.5, 48.25], [-118.75, 48.35], [-118.82, 48.32], [-118.97, 47.97], [-119.5, 47.75], [-119.75, 47.85], [-120.0, 47.75], [-120.53, 47.97], [-120.75, 48.5], [-120.53, 49.03], [-120.12, 49.2], [-120.25, 49.5], [-120.15, 49.75], [-120.25, 50.0], [-120.15, 50.25], [-120.25, 50.5], [-120.15, 50.75], [-120.18, 50.82], [-120.53, 50.97], [-120.75, 51.5], [-120.53, 52.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.North-America", "W.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-04-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-120.53, 50.97], [-120.75, 51.5], [-120.53, 52.03], [-120.18, 52.18], [-120.03, 52.53], [-119.5, 52.75], [-119.25, 52.65], [-119.0, 52.75], [-118.47, 52.53], [-118.32, 52.18], [-117.97, 52.03], [-117.75, 51.5], [-117.85, 51.25], [-117.82, 51.18], [-117.75, 51.15], [-117.5, 51.25], [-116.97, 51.03], [-116.75, 50.5], [-116.85, 50.25], [-116.82, 50.18], [-116.47, 50.03], [-116.25, 49.5], [-116.47, 48.97], [-116.82, 48.82], [-116.97, 48.47], [-117.5, 48.25], [-117.75, 48.35], [-118.0, 48.25], [-118.25, 48.35], [-118.5, 48.25], [-118.75, 48.35], [-118.82, 48.32], [-118.97, 47.97], [-119.5, 47.75], [-119.75, 47.85], [-120.0, 47.75], [-120.53, 47.97], [-120.75, 48.5], [-120.53, 49.03], [-120.12, 49.2], [-120.25, 49.5], [-120.15, 49.75], [-120.25, 50.0], [-120.15, 50.25], [-120.25, 50.5], [-120.15, 50.75], [-120.18, 50.82], [-120.53, 50.97]]]]}, "2024-04-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-120.53, 50.97], [-120.75, 51.5], [-120.53, 52.03], [-120.18, 52.18], [-120.03, 52.53], [-119.5, 52.75], [-119.25, 52.65], [-119.0, 52.75], [-118.47, 52.53], [-118.32, 52.18], [-117.97, 52.03], [-117.75, 51.5], [-117.85, 51.25], [-117.82, 51.18], [-117.75, 51.15], [-117.5, 51.25], [-116.97, 51.03], [-116.75, 50.5], [-116.85, 50.25], [-116.82, 50.18], [-116.47, 50.03], [-116.25, 49.5], [-116.47, 48.97], [-116.82, 48.82], [-116.97, 48.47], [-117.5, 48.25], [-117.75, 48.35], [-118.0, 48.25], [-118.25, 48.35], [-118.5, 48.25], [-118.75, 48.35], [-118.82, 48.32], [-118.97, 47.97], [-119.5, 47.75], [-119.75, 47.85], [-120.0, 47.75], [-120.53, 47.97], [-120.75, 48.5], [-120.53, 49.03], [-120.12, 49.2], [-120.25, 49.5], [-120.15, 49.75], [-120.25, 50.0], [-120.15, 50.25], [-120.25, 50.5], [-120.15, 50.75], [-120.18, 50.82], [-120.53, 50.97]]]]}, "2024-04-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-120.53, 50.97], [-120.75, 51.5], [-120.53, 52.03], [-120.18, 52.18], [-120.03, 52.53], [-119.5, 52.75], [-119.25, 52.65], [-119.0, 52.75], [-118.47, 52.53], [-118.32, 52.18], [-117.97, 52.03], [-117.75, 51.5], [-117.85, 51.25], [-117.82, 51.18], [-117.75, 51.15], [-117.5, 51.25], [-116.97, 51.03], [-116.75, 50.5], [-116.85, 50.25], [-116.82, 50.18], [-116.47, 50.03], [-116.25, 49.5], [-116.47, 48.97], [-116.82, 48.82], [-116.97, 48.47], [-117.5, 48.25], [-117.75, 48.35], [-118.0, 48.25], [-118.25, 48.35], [-118.5, 48.25], [-118.75, 48.35], [-118.82, 48.32], [-118.97, 47.97], [-119.5, 47.75], [-119.75, 47.85], [-120.0, 47.75], [-120.53, 47.97], [-120.75, 48.5], [-120.53, 49.03], [-120.12, 49.2], [-120.25, 49.5], [-120.15, 49.75], [-120.25, 50.0], [-120.15, 50.25], [-120.25, 50.5], [-120.15, 50.75], [-120.18, 50.82], [-120.53, 50.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 9.537873052011719}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.292911835684441}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [6.720455292779775, 9.58520220444882, 7.507117418274845]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.234586750723452, 12.430928118693544, 10.97570191407624]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.097953186342405, 7.951137538192799, 5.8296447825181215]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.337851446520972, 9.537873052011719, 7.637395314119999]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.729867218840622, 2.7157212143450775, 2.022392163145764]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.6062671181289723, 3.2391972584669757, 2.5447495468152947]}}