{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:00:50.003012", "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-Aug-31_to_2024-Sep-03_246.5_53.0"}, "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": 2024080003034}, "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": "August 31 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 03 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 125658.87533686253}, "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": 53.0}, "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": 246.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "246.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 243.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 248.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 47.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 55.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-116.25, 47.85], [-116.5, 47.75], [-117.03, 47.97], [-117.25, 48.5], [-117.15, 48.75], [-117.25, 49.0], [-117.03, 49.53], [-116.68, 49.68], [-116.53, 50.03], [-116.18, 50.18], [-116.03, 50.53], [-115.68, 50.68], [-115.62, 50.8], [-116.03, 50.97], [-116.25, 51.5], [-116.15, 51.75], [-116.18, 51.82], [-116.25, 51.85], [-116.5, 51.75], [-117.03, 51.97], [-117.18, 52.32], [-117.53, 52.47], [-117.75, 53.0], [-117.53, 53.53], [-117.18, 53.68], [-117.03, 54.03], [-116.68, 54.18], [-116.53, 54.53], [-116.0, 54.75], [-115.75, 54.65], [-115.68, 54.68], [-115.53, 55.03], [-115.18, 55.18], [-115.03, 55.53], [-114.5, 55.75], [-114.25, 55.65], [-114.0, 55.75], [-113.47, 55.53], [-113.25, 55.0], [-113.37, 54.7], [-113.25, 54.65], [-113.0, 54.75], [-112.47, 54.53], [-112.25, 54.0], [-112.35, 53.75], [-112.32, 53.68], [-112.25, 53.65], [-112.0, 53.75], [-111.47, 53.53], [-111.25, 53.0], [-111.47, 52.47], [-111.82, 52.32], [-111.97, 51.97], [-112.5, 51.75], [-112.75, 51.85], [-112.82, 51.82], [-112.97, 51.47], [-113.32, 51.32], [-113.35, 51.25], [-113.25, 51.0], [-113.47, 50.47], [-113.82, 50.32], [-113.85, 50.25], [-113.75, 50.0], [-113.87, 49.7], [-113.47, 49.53], [-113.25, 49.0], [-113.47, 48.47], [-114.0, 48.25], [-114.25, 48.35], [-114.37, 48.3], [-114.32, 48.18], [-113.97, 48.03], [-113.75, 47.5], [-113.97, 46.97], [-114.5, 46.75], [-115.03, 46.97], [-115.18, 47.32], [-115.25, 47.35], [-115.5, 47.25], [-116.03, 47.47], [-116.18, 47.82], [-116.25, 47.85]]]]}}, "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": {"2024-08-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-115.5, 47.25], [-116.03, 47.47], [-116.25, 48.0], [-116.03, 48.53], [-115.5, 48.75], [-115.25, 48.65], [-115.0, 48.75], [-114.47, 48.53], [-114.25, 48.0], [-114.47, 47.47], [-115.0, 47.25], [-115.25, 47.35], [-115.5, 47.25]]]]}, "2024-09-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-117.53, 52.47], [-117.75, 53.0], [-117.53, 53.53], [-117.18, 53.68], [-117.03, 54.03], [-116.68, 54.18], [-116.53, 54.53], [-116.0, 54.75], [-115.75, 54.65], [-115.68, 54.68], [-115.53, 55.03], [-115.18, 55.18], [-115.03, 55.53], [-114.5, 55.75], [-114.25, 55.65], [-114.0, 55.75], [-113.47, 55.53], [-113.25, 55.0], [-113.37, 54.7], [-113.25, 54.65], [-113.0, 54.75], [-112.47, 54.53], [-112.25, 54.0], [-112.35, 53.75], [-112.32, 53.68], [-112.25, 53.65], [-112.0, 53.75], [-111.47, 53.53], [-111.25, 53.0], [-111.47, 52.47], [-111.82, 52.32], [-111.97, 51.97], [-112.5, 51.75], [-112.75, 51.85], [-112.82, 51.82], [-112.97, 51.47], [-113.32, 51.32], [-113.35, 51.25], [-113.25, 51.0], [-113.47, 50.47], [-113.82, 50.32], [-113.85, 50.25], [-113.75, 50.0], [-113.87, 49.7], [-113.47, 49.53], [-113.25, 49.0], [-113.47, 48.47], [-114.0, 48.25], [-114.25, 48.35], [-114.37, 48.3], [-114.32, 48.18], [-113.97, 48.03], [-113.75, 47.5], [-113.97, 46.97], [-114.5, 46.75], [-115.03, 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"description": "The daily evolution of mean t2m.", "value": [20.359287804334713, 17.82566978377531, 19.24103452123785, 18.426831817626976]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.532698573655523, 23.024763997395837, 23.827991739908896, 22.678049977620446]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.729776238993907, 5.171092175057191, 6.812722457201312, 6.258365513797251]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.908589163944157, 6.489284099730924, 8.120671552544195, 7.924692982072884]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2791947497127665, 1.5491414440479647, 2.001243396617178, 1.8067022419960526]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3174274526516179, 1.7083005555434048, 2.4078193507417684, 2.325210629219868]}}