{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:03:47.006229", "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-Mar-07_to_2025-Mar-11_319.0_-4.5"}, "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": 2025030000203}, "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": "March 07 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 11 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": 70887.75248806563}, "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": -4.5}, "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": 319.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "319.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 318.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 321.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -5.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -3.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-42.03, -3.97], [-41.68, -3.82], [-41.54, -3.5], [-41.75, -3.0], [-41.53, -2.47], [-41.0, -2.25], [-40.75, -2.35], [-40.5, -2.25], [-40.25, -2.35], [-40.0, -2.25], [-39.47, -2.47], [-39.32, -2.82], [-38.97, -2.97], [-38.75, -3.5], [-38.85, -3.75], [-38.82, -3.82], [-38.47, -3.97], [-38.25, -4.5], [-38.47, -5.03], [-38.82, -5.18], [-38.97, -5.53], [-39.32, -5.68], [-39.47, -6.03], [-40.0, -6.25], [-40.25, -6.15], [-40.5, -6.25], [-40.75, -6.15], [-41.0, -6.25], [-41.53, -6.03], [-41.75, -5.5], [-41.65, -5.25], [-41.68, -5.18], [-42.03, -5.03], [-42.25, -4.5], [-42.03, -3.97]]]]}}, "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": {"2025-03-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-41.5, -5.25], [-42.02999999999997, -5.03], [-42.25, -4.5], [-42.02999999999997, -3.97], [-41.5, -3.75], [-41.25, -3.85], [-41.0, -3.75], [-40.47000000000003, -3.97], [-40.25, -4.5], [-40.47000000000003, -5.03], [-41.0, -5.25], [-41.25, -5.15], [-41.5, -5.25]]]]}, "2025-03-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-42.02999999999997, -5.03], [-42.25, -4.5], [-42.02999999999997, -3.97], [-41.5, -3.75], [-41.25, -3.85], [-41.18000000000001, -3.82], [-41.14999999999998, -3.75], [-41.25, -3.5], [-41.02999999999997, -2.97], [-40.5, -2.75], [-39.97000000000003, -2.97], [-39.75, -3.5], [-39.85000000000002, -3.75], [-39.75, -4.0], [-39.85000000000002, -4.25], [-39.75, -4.5], [-39.85000000000002, -4.75], [-39.75, -5.0], [-39.97000000000003, -5.53], [-40.5, -5.75], [-40.75, -5.65], [-41.0, -5.75], [-41.52999999999997, -5.53], [-41.68000000000001, -5.18], [-42.02999999999997, -5.03]]]]}, "2025-03-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-42.02999999999997, -5.03], [-42.25, -4.5], [-42.02999999999997, -3.97], [-41.68000000000001, -3.82], [-41.54000000000002, -3.5], [-41.75, -3.0], [-41.52999999999997, -2.47], [-41.0, -2.25], [-40.75, -2.35], [-40.5, -2.25], [-40.25, -2.35], [-40.0, -2.25], [-39.47000000000003, -2.47], [-39.31999999999999, -2.82], [-38.97000000000003, -2.97], [-38.75, -3.5], [-38.85000000000002, -3.75], [-38.81999999999999, -3.82], [-38.47000000000003, -3.97], [-38.25, -4.5], [-38.47000000000003, -5.03], [-38.81999999999999, -5.18], [-38.97000000000003, -5.53], [-39.31999999999999, -5.68], [-39.47000000000003, -6.03], [-40.0, -6.25], [-40.25, -6.15], [-40.5, -6.25], [-40.75, -6.15], [-41.0, -6.25], [-41.52999999999997, -6.03], [-41.75, -5.5], [-41.64999999999998, -5.25], [-41.68000000000001, -5.18], [-42.02999999999997, -5.03]]]]}, "2025-03-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-42.02999999999997, -5.03], [-42.25, -4.5], [-42.02999999999997, -3.97], [-41.68000000000001, -3.82], [-41.54000000000002, -3.5], [-41.75, -3.0], [-41.52999999999997, -2.47], [-41.0, -2.25], [-40.75, -2.35], [-40.5, -2.25], [-40.25, -2.35], [-40.0, -2.25], [-39.47000000000003, -2.47], [-39.31999999999999, -2.82], [-38.97000000000003, -2.97], [-38.75, -3.5], [-38.85000000000002, -3.75], [-38.81999999999999, -3.82], [-38.47000000000003, -3.97], [-38.25, -4.5], [-38.47000000000003, -5.03], [-38.81999999999999, -5.18], [-38.97000000000003, -5.53], [-39.31999999999999, -5.68], [-39.47000000000003, -6.03], [-40.0, -6.25], [-40.25, -6.15], [-40.5, -6.25], [-40.75, -6.15], [-41.0, -6.25], [-41.52999999999997, -6.03], [-41.75, -5.5], [-41.64999999999998, -5.25], [-41.68000000000001, -5.18], [-42.02999999999997, -5.03]]]]}, "2025-03-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-41.75, -5.0], [-41.64999999999998, -4.75], [-41.75, -4.5], [-41.64999999999998, -4.25], [-41.75, -4.0], [-41.54000000000002, -3.5], [-41.75, -3.0], [-41.52999999999997, -2.47], [-41.0, -2.25], [-40.75, -2.35], [-40.5, -2.25], [-40.25, -2.35], [-40.0, -2.25], [-39.47000000000003, -2.47], [-39.31999999999999, -2.82], [-38.97000000000003, -2.97], [-38.75, -3.5], [-38.85000000000002, -3.75], [-38.81999999999999, -3.82], [-38.47000000000003, -3.97], [-38.25, -4.5], [-38.47000000000003, -5.03], [-38.81999999999999, -5.18], [-38.97000000000003, -5.53], [-39.31999999999999, -5.68], [-39.47000000000003, -6.03], [-40.0, -6.25], [-40.25, -6.15], [-40.5, -6.25], [-40.75, -6.15], [-41.0, -6.25], [-41.52999999999997, -6.03], [-41.75, -5.5], [-41.64999999999998, -5.25], [-41.75, -5.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.928164300167225}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9530382576423275}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.467277781168605, 24.840493774414085, 24.27376211415168, 24.246521692690692, 24.505544743393443]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.94851964314779, 23.6601552327474, 22.24513397216799, 22.644216156005882, 23.06887334187826]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6566568642970196, -1.6496828959839636, -2.1098088286157717, -2.0911037129436214, -1.7682665173687]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8148073085788496, -1.983747423735224, -2.535026489000984, -2.928164300167225, -2.510122021282882]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.001756870424221, -1.1067533948980672, -1.5739280303486987, -1.5446016034489223, -1.315332692197057]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.0097277757278986, -1.20502773361297, -2.00534467681601, -1.9384199885699922, -1.6894358110447598]}}