{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:12:37.898423", "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": "2018-Apr-30_to_2018-May-03_262.5_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": 2018040002891}, "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": "April 30 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 03 2018"}, "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": 120158.96107738388}, "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": ["C.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": 262.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "262.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 260.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 267.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 36.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 42.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-04-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-99.75, 38.0], [-99.53, 38.53], [-99.18, 38.68], [-99.03, 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[-99.03, 36.47], [-99.25, 37.0], [-99.15, 37.25], [-99.18, 37.32], [-99.53, 37.47], [-99.75, 38.0]]]]}, "2018-05-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-99.75, 38.0], [-99.53, 38.53], [-99.18, 38.68], [-99.03, 39.03], [-98.68, 39.18], [-98.53, 39.53], [-98.0, 39.75], [-97.75, 39.65], [-97.68, 39.68], [-97.53, 40.03], [-97.0, 40.25], [-96.75, 40.15], [-96.68, 40.18], [-96.53, 40.53], [-96.0, 40.75], [-95.75, 40.65], [-95.68, 40.68], [-95.53, 41.03], [-95.18, 41.18], [-95.03, 41.53], [-94.5, 41.75], [-94.25, 41.65], [-94.18, 41.68], [-94.03, 42.03], [-93.68, 42.18], [-93.53, 42.53], [-93.0, 42.75], [-92.47, 42.53], [-92.25, 42.0], [-92.46, 41.5], [-92.25, 41.0], [-92.35, 40.75], [-92.25, 40.5], [-92.47, 39.97], [-92.82, 39.82], [-92.97, 39.47], [-93.5, 39.25], [-93.75, 39.35], [-94.0, 39.25], [-94.25, 39.35], [-94.5, 39.25], [-94.75, 39.35], [-94.82, 39.32], [-94.97, 38.97], [-95.32, 38.82], [-95.35, 38.75], [-95.25, 38.5], [-95.47, 37.97], [-95.82, 37.82], 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"description": "Mean t2m anomaly over entire duration", "value": 7.6345302372363415}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.30948847243434, 22.450720074279502, 22.713464231695582, 22.244733921055513]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.730402777339066, 23.265137040179695, 24.83609642204914, 22.244733921055513]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.171759356992558, 7.996079152490879, 7.770458555615819, 5.899212567725044]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [8.8594236949545, 9.352154185220627, 9.063119034359318, 5.899212567725044]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6357905345391035, 1.8154917708710199, 1.7578328478139122, 1.3916352726758316]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9539762899653224, 2.11918012983916, 2.035493980207153, 1.3916352726758316]}}