{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:05:43.013190", "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-Jun-12_to_2025-Jun-15_312.0_-4.0"}, "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": 2025060000441}, "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": "June 12 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 15 2025"}, "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": "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": 222167.1401762659}, "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": -4.0}, "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": 312.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "312.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 305.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 313.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -6.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -0.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-47.82, -5.18], [-47.85, -5.25], [-47.75, -5.5], [-47.97, -6.03], [-48.32, -6.18], [-48.47, -6.53], [-49.0, -6.75], [-49.53, -6.53], [-49.68, -6.18], [-50.03, -6.03], [-50.18, -5.68], [-50.25, -5.65], [-50.5, -5.75], [-51.03, -5.53], [-51.18, -5.18], [-51.53, -5.03], [-51.75, -4.5], [-51.65, -4.25], [-51.68, -4.18], [-51.75, -4.15], [-52.0, -4.25], [-52.53, -4.03], [-52.68, -3.68], [-53.03, -3.53], [-53.18, -3.18], [-53.53, -3.03], [-53.68, -2.68], [-54.03, -2.53], [-54.25, -2.0], [-54.15, -1.75], [-54.18, -1.68], [-54.25, -1.65], [-54.5, -1.75], [-55.03, -1.53], [-55.25, -1.0], [-55.03, -0.47], [-54.5, -0.25], [-54.25, -0.35], [-54.0, -0.25], [-53.5, -0.46], [-53.18, -0.32], [-53.03, 0.03], [-52.5, 0.25], [-51.97, 0.03], [-51.82, -0.32], [-51.47, -0.47], [-51.32, -0.82], [-51.25, -0.85], [-51.0, -0.75], [-50.47, -0.97], [-50.32, -1.32], [-50.25, -1.35], [-50.0, -1.25], [-49.75, -1.35], [-49.5, -1.25], [-48.97, -1.47], [-48.75, -2.0], [-48.85, -2.25], [-48.82, -2.32], [-48.5, -2.46], [-48.0, -2.25], [-47.47, -2.47], [-47.32, -2.82], [-46.97, -2.97], [-46.82, -3.32], [-46.47, -3.47], [-46.25, -4.0], [-46.47, -4.53], [-47.0, -4.75], [-47.3, -4.62], [-47.47, -5.03], [-47.82, -5.18]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America", "N.E.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-06-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-54.5, -1.75], [-55.02999999999997, -1.53], [-55.25, -1.0], [-55.02999999999997, -0.47], [-54.5, -0.25], [-54.25, -0.35], [-54.0, -0.25], [-53.5, -0.46], [-53.18000000000001, -0.32], [-53.02999999999997, 0.03], [-52.5, 0.25], [-51.97000000000003, 0.03], [-51.81999999999999, -0.32], [-51.47000000000003, -0.47], [-51.31999999999999, -0.82], [-51.25, -0.85], [-51.0, -0.75], [-50.47000000000003, -0.97], [-50.31999999999999, -1.32], [-50.25, -1.35], [-50.0, -1.25], [-49.75, -1.35], [-49.5, -1.25], [-48.97000000000003, -1.47], [-48.75, -2.0], 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"value": -1.3617763232909188}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.162725436302935, 25.054102410210476, 25.128951432969927, 25.472469039190457]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.209466552734398, 22.874838765462243, 22.45450617472335, 24.366872406005882]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3323561892502263, -1.437206390420962, -1.3656286655192136, -1.223051853173869]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.798372219516807, -2.233064216280752, -1.8453046717181678, -1.5876054108070434]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.0705429191614098, -2.272491394986568, -2.099622782140956, -1.8157044344547604]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.7616722501207973, -3.4778975128445886, -2.781703365930353, -2.5410981252580207]}}