{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:44.855432", "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-Feb-22_to_2012-Feb-25_238.0_39.5"}, "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": 2012020002526}, "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": "February 22 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 25 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": 55313.438912312646}, "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": 39.5}, "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": 238.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "238.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 236.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 240.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 37.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 40.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-02-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-123.25, 39.5], [-123.15, 39.75], [-123.25, 40.0], [-123.03, 40.53], [-122.68, 40.68], [-122.53, 41.03], [-122.0, 41.25], [-121.47, 41.03], [-121.32, 40.68], [-120.97, 40.53], [-120.82, 40.18], [-120.47, 40.03], [-120.32, 39.68], [-119.97, 39.53], [-119.75, 39.0], [-119.85, 38.75], [-119.82, 38.68], [-119.47, 38.53], [-119.32, 38.18], [-118.97, 38.03], [-118.75, 37.5], [-118.97, 36.97], [-119.5, 36.75], [-120.03, 36.97], [-120.18, 37.32], [-120.53, 37.47], [-120.68, 37.82], [-120.8, 37.88], [-120.85, 37.75], [-120.75, 37.5], [-120.97, 36.97], [-121.5, 36.75], [-122.03, 36.97], [-122.18, 37.32], [-122.53, 37.47], [-122.68, 37.82], [-122.75, 37.85], [-123.0, 37.75], [-123.53, 37.97], [-123.75, 38.5], [-123.53, 39.03], [-123.18, 39.18], [-123.15, 39.25], [-123.25, 39.5]]]]}, "2012-02-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-123.25, 39.5], [-123.15, 39.75], [-123.25, 40.0], [-123.03, 40.53], [-122.68, 40.68], [-122.53, 41.03], [-122.0, 41.25], [-121.47, 41.03], [-121.32, 40.68], [-120.97, 40.53], [-120.82, 40.18], [-120.47, 40.03], [-120.32, 39.68], [-119.97, 39.53], [-119.75, 39.0], [-119.85, 38.75], [-119.82, 38.68], [-119.47, 38.53], [-119.32, 38.18], [-118.97, 38.03], [-118.75, 37.5], [-118.97, 36.97], [-119.5, 36.75], [-120.03, 36.97], [-120.18, 37.32], [-120.53, 37.47], [-120.68, 37.82], [-120.8, 37.88], [-120.85, 37.75], [-120.75, 37.5], [-120.97, 36.97], [-121.5, 36.75], [-122.03, 36.97], [-122.18, 37.32], [-122.53, 37.47], [-122.68, 37.82], [-122.75, 37.85], [-123.0, 37.75], [-123.53, 37.97], [-123.75, 38.5], [-123.53, 39.03], [-123.18, 39.18], [-123.15, 39.25], [-123.25, 39.5]]]]}, "2012-02-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-123.25, 39.5], [-123.15, 39.75], [-123.25, 40.0], [-123.03, 40.53], [-122.68, 40.68], [-122.53, 41.03], [-122.0, 41.25], [-121.47, 41.03], [-121.32, 40.68], [-120.97, 40.53], [-120.82, 40.18], [-120.47, 40.03], [-120.32, 39.68], [-119.97, 39.53], [-119.75, 39.0], [-119.85, 38.75], [-119.82, 38.68], [-119.47, 38.53], [-119.32, 38.18], [-118.97, 38.03], [-118.75, 37.5], [-118.97, 36.97], [-119.5, 36.75], [-120.03, 36.97], [-120.18, 37.32], [-120.53, 37.47], [-120.68, 37.82], [-120.8, 37.88], [-120.85, 37.75], [-120.75, 37.5], [-120.97, 36.97], [-121.5, 36.75], [-122.03, 36.97], [-122.18, 37.32], [-122.53, 37.47], [-122.68, 37.82], [-122.75, 37.85], [-123.0, 37.75], [-123.53, 37.97], [-123.75, 38.5], [-123.53, 39.03], [-123.18, 39.18], [-123.15, 39.25], [-123.25, 39.5]]]]}, "2012-02-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-119.47, 38.53], [-119.32, 38.18], [-118.97, 38.03], [-118.75, 37.5], [-118.97, 36.97], [-119.5, 36.75], [-120.03, 36.97], [-120.18, 37.32], [-120.53, 37.47], [-120.75, 38.0], [-120.53, 38.53], [-120.0, 38.75], [-119.47, 38.53]]], [[[-122.53, 40.03], [-122.0, 40.25], [-121.47, 40.03], [-121.32, 39.68], [-120.97, 39.53], [-120.75, 39.0], [-120.85, 38.75], [-120.75, 38.5], [-120.85, 38.25], [-120.75, 38.0], [-120.97, 37.47], [-121.5, 37.25], [-122.03, 37.47], [-122.25, 38.0], [-122.15, 38.25], [-122.25, 38.5], [-122.15, 38.75], [-122.18, 38.82], [-122.53, 38.97], [-122.75, 39.5], [-122.53, 40.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.420773757737777}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.177781354575145}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.505004653561116, 13.483699405208142, 13.816670491668049, 12.152910572452072]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.024964902117176, 18.322856483236194, 18.557331591520438, 15.893625882300341]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.282229314579564, 5.156305258734906, 5.4036316394384265, 3.9939631166365452]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.420773757737777, 6.455933313517107, 7.11866663268529, 5.2099728752250485]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.8644364087109067, 1.8017023826489404, 1.8655100260711663, 1.4233267050974916]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.645819398744646, 2.797100507262799, 2.568518817782142, 1.4984422046979644]}}