{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:10:08.331352", "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": "2026-Feb-05_to_2026-Feb-09_324.0_-6.5"}, "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": 2026020000129}, "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": "February 05 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 09 2026"}, "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": 236678.98416722228}, "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": ["Atlantic Ocean"]}, "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": -6.5}, "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": 324.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "324.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 318.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 325.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -8.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -3.75}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-40.75, -4.35], [-40.68, -4.32], [-40.53, -3.97], [-40.0, -3.75], [-39.75, -3.85], [-39.68, -3.82], [-39.53, -3.47], [-39.0, -3.25], [-38.75, -3.35], [-38.5, -3.25], [-38.0, -3.46], [-37.5, -3.25], [-36.97, -3.47], [-36.82, -3.82], [-36.47, -3.97], [-36.32, -4.32], [-36.25, -4.35], [-36.0, -4.25], [-35.75, -4.35], [-35.5, -4.25], [-35.25, -4.35], [-35.0, -4.25], [-34.47, -4.47], [-34.25, -5.0], [-34.46, -5.5], [-34.25, -6.0], [-34.35, -6.25], [-34.25, -6.5], [-34.35, -6.75], [-34.25, -7.0], [-34.35, -7.25], [-34.25, -7.5], [-34.47, -8.03], [-34.82, -8.18], [-34.97, -8.53], [-35.5, -8.75], [-35.75, -8.65], [-36.0, -8.75], [-36.25, -8.65], [-36.5, -8.75], [-36.75, -8.65], [-37.0, -8.75], [-37.53, -8.53], [-37.68, -8.18], [-37.75, -8.15], [-38.0, -8.25], [-38.25, -8.15], [-38.5, -8.25], [-39.03, -8.03], [-39.25, -7.5], [-39.15, -7.25], [-39.2, -7.12], [-39.5, -7.25], [-39.75, -7.15], [-40.0, -7.25], [-40.25, -7.15], [-40.5, -7.25], [-41.03, -7.03], [-41.25, -6.5], [-41.12, -6.2], [-41.53, -6.03], [-41.75, -5.5], [-41.65, -5.25], [-41.75, -5.0], [-41.53, -4.47], [-41.0, -4.25], [-40.75, -4.35]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-02-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-40.52999999999997, -5.03], [-40.75, -4.5], [-40.52999999999997, -3.97], [-40.0, -3.75], [-39.75, -3.85], [-39.68000000000001, -3.82], [-39.52999999999997, -3.47], [-39.0, -3.25], [-38.75, -3.35], [-38.5, -3.25], [-37.97000000000003, -3.47], [-37.81999999999999, -3.82], [-37.47000000000003, -3.97], [-37.31999999999999, -4.32], [-37.0, -4.46], [-36.5, -4.25], [-35.97000000000003, -4.47], [-35.75, -5.0], [-35.97000000000003, -5.53], [-36.5, -5.75], [-37.0, -5.54], [-37.31999999999999, -5.68], [-37.47000000000003, -6.03], [-38.0, -6.25], [-38.25, -6.15], [-38.5, -6.25], [-38.75, -6.15], [-39.0, -6.25], [-39.25, -6.15], [-39.5, -6.25], [-40.02999999999997, -6.03], [-40.25, -5.5], [-40.14999999999998, -5.25], [-40.18000000000001, -5.18], [-40.52999999999997, -5.03]]]]}, "2026-02-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-40.52999999999997, -5.03], [-40.75, -4.5], [-40.52999999999997, -3.97], [-40.0, -3.75], [-39.75, -3.85], [-39.68000000000001, -3.82], [-39.52999999999997, -3.47], [-39.0, -3.25], [-38.75, -3.35], [-38.5, -3.25], [-37.97000000000003, -3.47], [-37.81999999999999, -3.82], [-37.75, -3.85], [-37.5, -3.75], [-37.25, -3.85], [-37.0, -3.75], [-36.47000000000003, -3.97], [-36.31999999999999, -4.32], [-36.25, -4.35], [-36.0, -4.25], [-35.75, -4.35], [-35.5, -4.25], [-35.25, -4.35], [-35.0, -4.25], [-34.47000000000003, -4.47], [-34.25, -5.0], [-34.45999999999998, -5.5], [-34.25, -6.0], [-34.35000000000002, -6.25], [-34.25, -6.5], [-34.35000000000002, -6.75], [-34.25, -7.0], [-34.35000000000002, -7.25], [-34.25, -7.5], [-34.47000000000003, -8.03], [-34.81999999999999, -8.18], [-34.97000000000003, -8.53], 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{"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.558383159657183}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.3898437250017732}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.500731554218362, 25.38567227022145, 25.016944198278054, 24.3106693977918, 25.210383860270213]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.120566304524743, 23.42803217569991, 22.471660868326865, 21.916377003987634, 23.38979873657229]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.126651265835743, -2.0100024792125644, -2.2734090745845337, -2.9937436680123612, -2.180691584147638]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.6634222766180073, -3.0340957763397114, -3.2519847337276246, -4.558383159657183, -2.9725875729498625]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9020179806099018, -2.1267863966605094, -2.2374987342709898, -2.776529501538766, -1.7981088573355186]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.344910872129411, -3.2948644343177897, -4.017980583879771, -4.521599984929873, -2.4481304570886904]}}