{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:57:31.173641", "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": "2024-Feb-21_to_2024-Feb-23_318.0_-10.5"}, "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": 2024020000525}, "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 21 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 23 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 70128.2077675842}, "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": -10.5}, "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": 318.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "318.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 316.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 318.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -11.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -7.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-44.75, -10.0], [-44.53, -9.47], [-44.0, -9.25], [-43.75, -9.35], [-43.68, -9.32], [-43.53, -8.97], [-43.18, -8.82], [-43.15, -8.75], [-43.25, -8.5], [-43.15, -8.25], [-43.18, -8.18], [-43.53, -8.03], [-43.75, -7.5], [-43.53, -6.97], [-43.0, -6.75], [-42.75, -6.85], [-42.5, -6.75], [-42.25, -6.85], [-42.0, -6.75], [-41.47, -6.97], [-41.25, -7.5], [-41.35, -7.75], [-41.25, -8.0], [-41.35, -8.25], [-41.25, -8.5], [-41.35, -8.75], [-41.32, -8.82], [-40.97, -8.97], [-40.75, -9.5], [-40.97, -10.03], [-41.37, -10.2], [-41.25, -10.5], [-41.35, -10.75], [-41.25, -11.0], [-41.47, -11.53], [-42.0, -11.75], [-42.25, -11.65], [-42.5, -11.75], [-42.75, -11.65], [-43.0, -11.75], [-43.53, -11.53], [-43.75, -11.0], [-43.65, -10.75], [-43.68, -10.68], [-43.75, -10.65], [-44.0, -10.75], [-44.53, -10.53], [-44.75, -10.0]]]]}}, "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": {"2024-02-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-44.0, -10.75], [-44.52999999999997, -10.53], [-44.75, -10.0], [-44.52999999999997, -9.47], [-44.0, -9.25], [-43.75, -9.35], [-43.68000000000001, -9.32], [-43.52999999999997, -8.97], [-43.18000000000001, -8.82], [-43.14999999999998, -8.75], [-43.25, -8.5], [-43.14999999999998, -8.25], [-43.18000000000001, -8.18], [-43.52999999999997, -8.03], [-43.75, -7.5], [-43.52999999999997, -6.97], [-43.0, -6.75], [-42.75, -6.85], [-42.5, -6.75], [-42.25, -6.85], [-42.0, -6.75], [-41.47000000000003, -6.97], [-41.25, -7.5], [-41.35000000000002, -7.75], [-41.25, -8.0], [-41.35000000000002, -8.25], [-41.25, -8.5], [-41.35000000000002, -8.75], [-41.31999999999999, -8.82], [-40.97000000000003, -8.97], [-40.75, -9.5], [-40.97000000000003, -10.03], [-41.370000000000005, -10.2], [-41.25, -10.5], [-41.35000000000002, -10.75], [-41.25, -11.0], [-41.47000000000003, -11.53], [-42.0, -11.75], [-42.25, -11.65], [-42.5, -11.75], [-42.75, -11.65], [-43.0, -11.75], [-43.52999999999997, -11.53], [-43.75, -11.0], [-43.64999999999998, -10.75], [-43.68000000000001, -10.68], [-43.75, -10.65], [-44.0, -10.75]]]]}, "2024-02-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-44.0, -10.75], [-44.52999999999997, -10.53], [-44.75, -10.0], [-44.52999999999997, -9.47], [-44.0, -9.25], [-43.75, -9.35], [-43.68000000000001, -9.32], [-43.52999999999997, -8.97], [-43.18000000000001, -8.82], [-43.14999999999998, -8.75], [-43.25, -8.5], [-43.14999999999998, -8.25], [-43.18000000000001, -8.18], [-43.52999999999997, -8.03], [-43.75, -7.5], [-43.52999999999997, -6.97], [-43.0, -6.75], [-42.75, -6.85], [-42.5, -6.75], [-42.25, -6.85], [-42.0, -6.75], [-41.47000000000003, -6.97], [-41.25, -7.5], [-41.35000000000002, -7.75], [-41.25, -8.0], [-41.35000000000002, -8.25], [-41.25, -8.5], [-41.35000000000002, -8.75], [-41.31999999999999, -8.82], [-40.97000000000003, -8.97], [-40.75, -9.5], [-40.97000000000003, -10.03], [-41.370000000000005, -10.2], [-41.25, -10.5], [-41.35000000000002, -10.75], [-41.25, -11.0], [-41.47000000000003, -11.53], [-42.0, -11.75], [-42.25, -11.65], [-42.5, -11.75], [-42.75, -11.65], [-43.0, -11.75], [-43.52999999999997, -11.53], [-43.75, -11.0], [-43.64999999999998, -10.75], [-43.68000000000001, -10.68], [-43.75, -10.65], [-44.0, -10.75]]]]}, "2024-02-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-44.0, -10.75], [-44.52999999999997, -10.53], [-44.75, -10.0], [-44.52999999999997, -9.47], [-44.0, -9.25], [-43.75, -9.35], [-43.68000000000001, -9.32], [-43.52999999999997, -8.97], [-43.18000000000001, -8.82], [-43.14999999999998, -8.75], [-43.25, -8.5], [-43.14999999999998, -8.25], [-43.18000000000001, -8.18], [-43.52999999999997, -8.03], [-43.75, -7.5], [-43.52999999999997, -6.97], [-43.0, -6.75], [-42.75, -6.85], [-42.5, -6.75], [-42.25, -6.85], [-42.0, -6.75], [-41.47000000000003, -6.97], [-41.25, -7.5], [-41.35000000000002, -7.75], [-41.25, -8.0], [-41.35000000000002, -8.25], [-41.25, -8.5], [-41.35000000000002, -8.75], [-41.31999999999999, -8.82], [-40.97000000000003, -8.97], [-40.75, -9.5], [-40.97000000000003, -10.03], [-41.370000000000005, -10.2], [-41.25, -10.5], [-41.35000000000002, -10.75], [-41.25, -11.0], [-41.47000000000003, -11.53], [-42.0, -11.75], [-42.25, -11.65], [-42.5, -11.75], [-42.75, -11.65], [-43.0, -11.75], [-43.52999999999997, -11.53], [-43.75, -11.0], [-43.64999999999998, -10.75], [-43.68000000000001, -10.68], [-43.75, -10.65], [-44.0, -10.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.3792521556958945}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.3476631955864384}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.454458745547356, 24.275001633122486, 24.586083146095746]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.656888822807048, 23.49899431591416, 23.874623668083643]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.2723283954823934, -2.5129270344278103, -2.257734156849111]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.03479262365488, -3.3792521556958945, -2.83565213106408]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4632311427449367, -1.6321469265102537, -1.5012874295646548]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8395667797331565, -2.2355675927766745, -1.8060107161484178]}}