{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:20:11.046051", "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-Dec-25_to_2020-Dec-27_257.5_40.5"}, "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": 2020120002898}, "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 25 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 27 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": 77851.32993471937}, "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": 40.5}, "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": 257.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "257.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 255.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 259.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 38.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 42.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-104.5, 41.75], [-104.25, 41.646], [-104.0, 41.75], [-103.75, 41.646], [-103.677, 41.677], [-103.646, 41.75], [-103.75, 42.0], [-103.53, 42.53], [-103.0, 42.75], [-102.75, 42.646], [-102.5, 42.75], [-101.97, 42.53], [-101.823, 42.177], [-101.47, 42.03], [-101.25, 41.5], [-101.354, 41.25], [-101.323, 41.177], [-100.97, 41.03], [-100.75, 40.5], [-100.854, 40.25], [-100.823, 40.177], [-100.47, 40.03], [-100.25, 39.5], [-100.47, 38.97], [-100.823, 38.823], [-100.854, 38.75], [-100.75, 38.5], [-100.97, 37.97], [-101.5, 37.75], [-101.75, 37.854], [-102.0, 37.75], [-102.53, 37.97], [-102.677, 38.323], [-102.75, 38.354], [-103.0, 38.25], [-103.25, 38.354], [-103.5, 38.25], [-103.75, 38.354], [-104.0, 38.25], [-104.53, 38.47], [-104.75, 39.0], [-104.53, 39.53], [-104.125, 39.698], [-104.177, 39.823], [-104.5, 39.957], [-105.0, 39.75], [-105.53, 39.97], [-105.75, 40.5], [-105.53, 41.03], [-105.177, 41.177], [-105.03, 41.53], [-104.5, 41.75]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.North-America", "C.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-12-25T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-105.17677669529664, 41.17677669529664], [-105.03033008588991, 41.53033008588991], [-104.5, 41.75], [-104.25, 41.64644660940672], [-104.0, 41.75], [-103.75, 41.64644660940672], [-103.67677669529661, 41.67677669529664], [-103.64644660940672, 41.75], [-103.75, 42.0], [-103.53033008588989, 42.53033008588991], [-103.0, 42.75], [-102.75, 42.64644660940672], [-102.5, 42.75], [-101.96966991411011, 42.53033008588991], [-101.82322330470339, 42.17677669529664], [-101.46966991411011, 42.03033008588991], [-101.25, 41.5], [-101.35355339059328, 41.25], [-101.32322330470339, 41.17677669529664], [-100.96966991411011, 41.03033008588991], [-100.75, 40.5], [-100.85355339059328, 40.25], [-100.82322330470339, 40.17677669529664], [-100.46966991411011, 40.03033008588991], [-100.25, 39.5], [-100.46966991411011, 38.96966991411009], 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{"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [8.044664372086572, 8.473563025489682, 8.884584079629008]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.409310999367822, 1.431274729844349, 1.4119140691271876]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5788091683195655, 1.5702564016319747, 1.6542608437543056]}}