{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:28.703154", "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": "2012-Sep-07_to_2012-Sep-10_243.0_37.5"}, "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": 2012090001721}, "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": "September 07 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 10 2012"}, "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": 80712.83066602319}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.North-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North 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": 37.5}, "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": 243.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "243.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 241.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 244.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 35.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 40.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-09-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-117.53, 38.03], [-117.0, 38.25], [-116.47, 38.03], [-116.25, 37.5], [-116.47, 36.97], [-116.87, 36.8], [-116.75, 36.5], [-116.97, 35.97], [-117.5, 35.75], [-118.03, 35.97], [-118.25, 36.5], [-118.03, 37.03], [-117.62, 37.2], [-117.75, 37.5], [-117.53, 38.03]]]]}, "2012-09-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-119.04, 39.0], [-119.25, 39.5], [-119.03, 40.03], [-118.5, 40.25], [-118.25, 40.15], [-118.0, 40.25], [-117.75, 40.15], [-117.68, 40.18], [-117.53, 40.53], [-117.0, 40.75], [-116.47, 40.53], [-116.25, 40.0], [-116.46, 39.5], [-116.32, 39.18], [-115.97, 39.03], [-115.82, 38.68], [-115.47, 38.53], [-115.25, 38.0], [-115.35, 37.75], [-115.25, 37.5], [-115.35, 37.25], [-115.25, 37.0], [-115.35, 36.75], [-115.25, 36.5], [-115.47, 35.97], [-116.0, 35.75], [-116.25, 35.85], [-116.5, 35.75], [-116.75, 35.85], [-116.87, 35.8], [-116.75, 35.5], [-116.97, 34.97], [-117.5, 34.75], [-117.75, 34.85], [-118.0, 34.75], [-118.53, 34.97], [-118.75, 35.5], [-118.65, 35.75], [-118.75, 36.0], [-118.65, 36.25], [-118.75, 36.5], [-118.65, 36.75], [-118.75, 37.0], [-118.65, 37.25], [-118.68, 37.32], [-119.03, 37.47], [-119.25, 38.0], [-119.15, 38.25], [-119.25, 38.5], [-119.04, 39.0]]]]}, "2012-09-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-119.04, 39.0], [-119.25, 39.5], [-119.03, 40.03], [-118.5, 40.25], [-118.25, 40.15], [-118.0, 40.25], [-117.75, 40.15], [-117.68, 40.18], [-117.53, 40.53], [-117.0, 40.75], [-116.47, 40.53], [-116.25, 40.0], [-116.46, 39.5], [-116.32, 39.18], [-115.97, 39.03], [-115.82, 38.68], [-115.47, 38.53], [-115.25, 38.0], [-115.35, 37.75], [-115.25, 37.5], [-115.35, 37.25], [-115.25, 37.0], [-115.35, 36.75], [-115.25, 36.5], [-115.47, 35.97], [-116.0, 35.75], [-116.25, 35.85], [-116.5, 35.75], [-116.75, 35.85], [-116.87, 35.8], [-116.75, 35.5], [-116.97, 34.97], [-117.5, 34.75], [-117.75, 34.85], [-118.0, 34.75], [-118.53, 34.97], [-118.75, 35.5], [-118.65, 35.75], [-118.75, 36.0], [-118.65, 36.25], [-118.75, 36.5], [-118.65, 36.75], [-118.75, 37.0], [-118.65, 37.25], [-118.68, 37.32], [-119.03, 37.47], [-119.25, 38.0], [-119.15, 38.25], [-119.25, 38.5], [-119.04, 39.0]]]]}, "2012-09-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-119.04, 39.0], [-119.25, 39.5], [-119.03, 40.03], [-118.5, 40.25], [-118.25, 40.15], [-118.0, 40.25], [-117.75, 40.15], [-117.68, 40.18], [-117.53, 40.53], [-117.0, 40.75], [-116.47, 40.53], [-116.25, 40.0], [-116.46, 39.5], [-116.32, 39.18], [-115.97, 39.03], [-115.82, 38.68], [-115.47, 38.53], [-115.25, 38.0], [-115.35, 37.75], [-115.25, 37.5], [-115.35, 37.25], [-115.25, 37.0], [-115.35, 36.75], [-115.25, 36.5], [-115.47, 35.97], [-116.0, 35.75], [-116.25, 35.85], [-116.5, 35.75], [-116.75, 35.85], [-116.87, 35.8], [-116.75, 35.5], [-116.97, 34.97], [-117.5, 34.75], [-117.75, 34.85], [-118.0, 34.75], [-118.53, 34.97], [-118.75, 35.5], [-118.65, 35.75], [-118.75, 36.0], [-118.65, 36.25], [-118.75, 36.5], [-118.65, 36.75], [-118.75, 37.0], [-118.65, 37.25], [-118.68, 37.32], [-119.03, 37.47], [-119.25, 38.0], [-119.15, 38.25], [-119.25, 38.5], [-119.04, 39.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.512677912646609}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.188126937733171}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.05763957141926, 25.919701964704586, 26.860068601891555, 25.63159959763658]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [29.687434118904036, 33.84308587776695, 34.98880711935698, 33.43336688033202]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.1249275808941945, 3.8278849886296795, 4.918350259105534, 3.882581890121206]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.2343664403068715, 4.912948250816896, 6.512677912646609, 4.866262103608619]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.1320241961536832, 1.3177221113595015, 1.692594799678357, 1.3587055799502938]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.1416717169349855, 1.700640082809521, 1.9194672940809747, 1.6078833490150817]}}