{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:08:14.759710", "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": "2025-Oct-08_to_2025-Oct-12_300.5_-8.0"}, "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": 2025100000285}, "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": "October 08 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 12 2025"}, "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": 101065.60041084065}, "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": ["Brazil"]}, "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": -8.0}, "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": 300.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "300.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 299.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 303.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -9.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -6.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-60.5, -7.25], [-60.25, -7.35], [-60.18, -7.32], [-60.15, -7.25], [-60.25, -7.0], [-60.03, -6.47], [-59.5, -6.25], [-59.25, -6.35], [-59.0, -6.25], [-58.75, -6.35], [-58.68, -6.32], [-58.53, -5.97], [-58.0, -5.75], [-57.75, -5.85], [-57.5, -5.75], [-57.25, -5.85], [-57.23, -5.84], [-57.18, -5.82], [-57.03, -5.47], [-56.5, -5.25], [-55.97, -5.47], [-55.75, -6.0], [-55.97, -6.53], [-56.32, -6.68], [-56.35, -6.75], [-56.32, -6.82], [-55.97, -6.97], [-55.75, -7.5], [-55.97, -8.03], [-56.32, -8.18], [-56.47, -8.53], [-57.0, -8.75], [-57.3, -8.62], [-57.47, -9.03], [-58.0, -9.25], [-58.25, -9.15], [-58.32, -9.18], [-58.47, -9.53], [-59.0, -9.75], [-59.25, -9.65], [-59.5, -9.75], [-59.75, -9.65], [-60.0, -9.75], [-60.25, -9.65], [-60.5, -9.75], [-61.03, -9.53], [-61.25, -9.0], [-61.15, -8.75], [-61.25, -8.5], [-61.15, -8.25], [-61.25, -8.0], [-61.03, -7.47], [-60.5, -7.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America", "South-American-Monsoon"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-10-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.5, -8.75], [-61.02999999999997, -8.53], [-61.25, -8.0], [-61.02999999999997, -7.47], [-60.5, -7.25], [-60.25, -7.35], [-60.18000000000001, -7.32], [-60.14999999999998, -7.25], [-60.25, -7.0], [-60.02999999999997, -6.47], [-59.5, -6.25], [-59.25, -6.35], [-59.0, -6.25], [-58.75, -6.35], [-58.68000000000001, -6.32], [-58.52999999999997, -5.97], [-58.0, -5.75], [-57.5, -5.96], [-57.18000000000001, -5.82], [-57.02999999999997, -5.47], [-56.5, -5.25], [-55.97000000000003, -5.47], [-55.75, -6.0], [-55.97000000000003, -6.53], [-56.31999999999999, -6.68], [-56.35000000000002, -6.75], [-56.25, -7.0], [-56.47000000000003, -7.53], [-56.81999999999999, -7.68], [-56.97000000000003, -8.03], [-57.5, -8.25], [-57.75, -8.15], [-57.81999999999999, -8.18], [-57.97000000000003, -8.53], [-58.5, -8.75], [-58.75, -8.65], [-59.0, -8.75], [-59.25, -8.65], [-59.5, -8.75], [-59.75, 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24.802536434597414, 24.82621000655979, 24.532338714599632, 24.979651387532556]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.943027750651083, 23.93815383911135, 24.01838073730471, 23.540532684326195, 24.363867696126306]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.9977593115227286, -1.7948943053298194, -1.6902292406682695, -1.927465850125195, -1.488505530225403]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.6191459350868627, -2.206264651030665, -2.198074107691582, -2.7563718907105113, -1.7479822121383108]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6309428940111603, -1.6064464568209886, -1.5705180959752492, -1.8679475540975403, -1.3803503182482186]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0656490039535247, -2.122017022861359, -1.9242472398048223, -2.9530531448111277, -1.5342667151198202]}}