{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:12:53.608717", "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": "2020-Apr-09_to_2020-Apr-11_240.0_46.0"}, "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": 2020040001603}, "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 09 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 11 2020"}, "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": 51904.937933655856}, "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": 46.0}, "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": 240.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "240.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 237.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 240.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 43.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 48.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-123.146, 44.25], [-123.25, 44.5], [-123.03, 45.03], [-122.677, 45.177], [-122.53, 45.53], [-122.177, 45.677], [-122.03, 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"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": {"2020-04-09T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-123.14644660940672, 43.75], [-123.25, 44.0], [-123.14644660940672, 44.25], [-123.25, 44.5], [-123.03033008588991, 45.03033008588991], [-122.67677669529664, 45.17677669529664], [-122.53033008588991, 45.53033008588991], [-122.17677669529664, 45.67677669529664], [-122.03033008588991, 46.03033008588991], [-121.67677669529664, 46.17677669529664], [-121.64644660940672, 46.25], [-121.75, 46.5], [-121.64644660940672, 46.75], [-121.75, 47.0], [-121.64644660940672, 47.25], [-121.75, 47.5], [-121.53033008588991, 48.03033008588991], [-121.17677669529664, 48.17677669529664], [-121.03033008588991, 48.53033008588991], [-120.5, 48.75], [-119.96966991411009, 48.53033008588991], [-119.75, 48.0], [-119.85355339059328, 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"description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9431175135196344, 2.403411050490222, 1.9119163167715088]}}