{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:55:16.077666", "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": "2023-Sep-28_to_2023-Oct-02_68.0_34.0"}, "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": 2023090000535}, "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 28 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 02 2023"}, "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": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 74037.84345675391}, "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": ["Afghanistan"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "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": 34.0}, "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": 68.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "68.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 64.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 69.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 33.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 35.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[69.53, 34.53], [69.75, 34.0], [69.53, 33.47], [69.18, 33.32], [69.15, 33.25], [69.25, 33.0], [69.03, 32.47], [68.5, 32.25], 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step", "value": {"2023-09-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[64.0, 33.25], [63.47, 33.47], [63.25, 34.0], [63.47, 34.53], [64.0, 34.75], [64.25, 34.65], [64.32, 34.68], [64.47, 35.03], [65.0, 35.25], [65.25, 35.15], [65.5, 35.25], [65.75, 35.15], [65.82, 35.18], [65.97, 35.53], [66.5, 35.75], [66.75, 35.65], [67.0, 35.75], [67.25, 35.65], [67.32, 35.68], [67.47, 36.03], [68.0, 36.25], [68.5, 36.04], [69.0, 36.25], [69.25, 36.15], [69.5, 36.25], [70.03, 36.03], [70.25, 35.5], [70.03, 34.97], [69.5, 34.75], [69.25, 34.85], [69.18, 34.82], [69.03, 34.47], [68.68, 34.32], [68.53, 33.97], [68.0, 33.75], [67.75, 33.85], [67.68, 33.82], [67.53, 33.47], [67.0, 33.25], [66.75, 33.35], [66.5, 33.25], [66.25, 33.35], [66.0, 33.25], [65.75, 33.35], [65.5, 33.25], [65.25, 33.35], [65.0, 33.25], [64.75, 33.35], [64.5, 33.25], [64.25, 33.35], [64.0, 33.25]]]]}, "2023-09-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[64.0, 33.25], [63.47, 33.47], 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-3.8435627386819546}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [5.798912460009603, 5.683544112575646, 6.524931145986898, 10.51284951008688, 9.720412789943111]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [1.5618190411287287, 0.47587532323768755, 0.7993916070655587, 6.266790167148713, 5.928103534137222]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.5503183071318953, -4.646421642538249, -3.6203365219899646, -2.9342495539613487, -3.0450071105580947]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.699757592698916, -6.489839497880439, -5.022797131338507, -3.155568969939509, -3.311343096213591]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3575052194460775, -1.842605555345041, -1.4351231365663897, -1.326930171519486, -1.3889367413401863]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.677468898561126, -2.421739487899469, -1.8928548862408818, -1.371517139853642, -1.4398198057106222]}}