{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:29.305622", "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-May-13_to_2012-May-16_239.5_43.5"}, "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": 2012050002336}, "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": "May 13 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 16 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": 162981.7238408081}, "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": 43.5}, "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": 239.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "239.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 237.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 243.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 40.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 47.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-05-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-122.53, 45.53], [-122.0, 45.75], [-121.47, 45.53], [-121.25, 45.0], [-121.35, 44.75], [-121.32, 44.68], [-121.25, 44.65], [-121.0, 44.75], [-120.75, 44.65], [-120.68, 44.68], [-120.53, 45.03], [-120.0, 45.25], [-119.47, 45.03], [-119.25, 44.5], [-119.35, 44.25], [-119.25, 44.0], [-119.35, 43.75], [-119.25, 43.5], [-119.35, 43.25], [-119.25, 43.0], [-119.47, 42.47], [-120.0, 42.25], [-120.25, 42.35], [-120.5, 42.25], [-120.75, 42.35], [-120.87, 42.3], [-120.75, 42.0], [-120.97, 41.47], [-121.5, 41.25], [-122.03, 41.47], [-122.25, 42.0], [-122.04, 42.5], [-122.25, 43.0], [-122.15, 43.25], [-122.25, 43.5], [-122.15, 43.75], [-122.18, 43.82], [-122.53, 43.97], [-122.75, 44.5], [-122.65, 44.75], [-122.75, 45.0], [-122.53, 45.53]]]]}, "2012-05-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-122.53, 45.53], [-122.0, 45.75], [-121.47, 45.53], [-121.25, 45.0], [-121.35, 44.75], [-121.32, 44.68], [-121.25, 44.65], [-121.18, 44.68], [-121.03, 45.03], [-120.68, 45.18], [-120.62, 45.3], [-121.03, 45.47], [-121.25, 46.0], [-121.03, 46.53], [-120.5, 46.75], [-120.25, 46.65], [-120.18, 46.68], [-120.15, 46.75], [-120.25, 47.0], [-120.03, 47.53], [-119.68, 47.68], [-119.53, 48.03], [-119.0, 48.25], [-118.47, 48.03], [-118.32, 47.68], [-117.97, 47.53], [-117.75, 47.0], [-117.85, 46.75], [-117.82, 46.68], [-117.47, 46.53], [-117.25, 46.0], [-117.46, 45.5], [-117.32, 45.18], [-116.97, 45.03], [-116.75, 44.5], [-116.97, 43.97], [-117.32, 43.82], [-117.35, 43.75], [-117.32, 43.68], [-116.97, 43.53], [-116.82, 43.18], [-116.47, 43.03], [-116.25, 42.5], [-116.47, 41.97], [-116.82, 41.82], [-116.97, 41.47], [-117.5, 41.25], [-117.75, 41.35], [-117.82, 41.32], [-117.97, 40.97], [-118.32, 40.82], [-118.47, 40.47], [-119.0, 40.25], [-119.25, 40.35], [-119.5, 40.25], [-120.03, 40.47], [-120.18, 40.82], [-120.53, 40.97], [-120.68, 41.32], [-120.75, 41.35], [-121.0, 41.25], [-121.25, 41.35], [-121.5, 41.25], [-122.03, 41.47], [-122.25, 42.0], [-122.15, 42.25], [-122.25, 42.5], [-122.15, 42.75], [-122.25, 43.0], [-122.15, 43.25], [-122.25, 43.5], [-122.15, 43.75], [-122.18, 43.82], [-122.53, 43.97], [-122.75, 44.5], [-122.65, 44.75], [-122.75, 45.0], [-122.53, 45.53]]]]}, "2012-05-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-122.53, 45.53], [-122.0, 45.75], [-121.47, 45.53], [-121.25, 45.0], [-121.35, 44.75], [-121.32, 44.68], [-121.25, 44.65], [-121.18, 44.68], [-121.03, 45.03], [-120.68, 45.18], [-120.62, 45.3], [-121.03, 45.47], [-121.25, 46.0], [-121.03, 46.53], [-120.5, 46.75], [-120.25, 46.65], [-120.18, 46.68], [-120.15, 46.75], [-120.25, 47.0], [-120.03, 47.53], [-119.68, 47.68], [-119.53, 48.03], [-119.0, 48.25], [-118.47, 48.03], [-118.32, 47.68], [-117.97, 47.53], [-117.75, 47.0], [-117.85, 46.75], [-117.82, 46.68], [-117.47, 46.53], [-117.25, 46.0], [-117.46, 45.5], [-117.32, 45.18], [-116.97, 45.03], [-116.75, 44.5], [-116.97, 43.97], [-117.32, 43.82], [-117.35, 43.75], [-117.32, 43.68], [-116.97, 43.53], [-116.82, 43.18], [-116.47, 43.03], [-116.25, 42.5], [-116.47, 41.97], 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duration", "value": 10.862866648587215}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.839964211772329}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.989660688434242, 20.47618680161156, 20.84526169534496, 20.360056629031817]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.643239136001796, 25.901099324840175, 27.787265604220067, 26.180373700065047]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.200719388245886, 7.956937715018319, 8.243800859418592, 7.425169826119929]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [8.701848939607657, 10.862866648587215, 9.895330163937388, 9.067985557113445]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.510252093249377, 1.6682025749199483, 1.7575909495611106, 1.6257883246647358]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6629201098815225, 2.2068242365677104, 2.0793498111707702, 1.8868986750644239]}}