{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:23:25.923216", "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": "2022-Sep-29_to_2022-Oct-03_260.0_44.5"}, "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": 2022090002863}, "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 29 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 03 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 169238.4617418234}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 44.5}, "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": 260.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "260.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 258.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 263.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 39.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 45.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-102.25, 40.5], [-102.15, 40.75], [-102.25, 41.0], [-102.15, 41.25], [-102.25, 41.5], [-102.15, 41.75], [-102.25, 42.0], [-102.15, 42.25], [-102.25, 42.5], [-102.03, 43.03], [-101.68, 43.18], [-101.63, 43.3], [-102.03, 43.47], [-102.25, 44.0], [-102.15, 44.25], [-102.25, 44.5], [-102.15, 44.75], [-102.25, 45.0], [-102.03, 45.53], [-101.5, 45.75], [-101.25, 45.65], [-101.18, 45.68], [-101.03, 46.03], [-100.5, 46.25], [-99.97, 46.03], [-99.82, 45.68], [-99.75, 45.65], [-99.68, 45.68], [-99.53, 46.03], [-99.0, 46.25], [-98.75, 46.15], [-98.5, 46.25], [-98.25, 46.15], [-98.0, 46.25], [-97.47, 46.03], [-97.25, 45.5], [-97.35, 45.25], [-97.32, 45.18], [-97.25, 45.15], [-97.0, 45.25], [-96.47, 45.03], [-96.25, 44.5], [-96.35, 44.25], [-96.25, 44.0], [-96.47, 43.47], [-96.82, 43.32], [-96.85, 43.25], [-96.75, 43.0], [-96.97, 42.47], [-97.32, 42.32], [-97.47, 41.97], [-98.0, 41.75], [-98.25, 41.85], [-98.5, 41.75], [-98.75, 41.85], [-98.82, 41.82], [-98.97, 41.47], [-99.5, 41.25], [-99.75, 41.35], [-99.82, 41.32], [-99.85, 41.25], [-99.75, 41.0], [-99.85, 40.75], [-99.75, 40.5], [-99.97, 39.97], [-100.32, 39.82], 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"description": "Maximum t2m anomaly recorded over entire duration", "value": 9.091207193051275}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.606115054267747}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.79836429264384, 20.915823213883584, 20.156474661442587, 20.624751676746428, 19.637869495137238]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.778997482484442, 23.705343958393712, 22.539258093021374, 22.66377190850727, 21.49288650459033]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.220447642008186, 6.565303737703879, 6.31393287785377, 7.100475052866133, 6.519299839604439]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.974628969775608, 9.091207193051275, 7.195841530742712, 8.199976728824709, 7.6086410897272]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5819703621128802, 1.6207510544020387, 1.5235041732867447, 1.6433641249459439, 1.44714161674743]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.0229121022047, 2.2195167736668844, 1.7248758288520538, 1.8930081029525516, 1.6821011793760965]}}