{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:03:58.316172", "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-27_to_2025-Apr-01_304.0_3.0"}, "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": 2025030000698}, "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 27 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 01 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 95634.46538751299}, "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", "French Guiana", "Suriname"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "America", "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": 3.0}, "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": 304.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "304.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 303.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 306.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 2.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 5.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-53.97, 2.53], [-53.75, 2.0], [-53.97, 1.47], [-54.5, 1.25], [-54.75, 1.35], [-55.0, 1.25], [-55.25, 1.35], [-55.5, 1.25], [-56.0, 1.46], [-56.5, 1.25], [-57.03, 1.47], [-57.25, 2.0], [-57.15, 2.25], [-57.25, 2.5], [-57.15, 2.75], [-57.25, 3.0], [-57.15, 3.25], [-57.18, 3.32], [-57.53, 3.47], [-57.75, 4.0], [-57.53, 4.53], [-57.18, 4.68], [-57.03, 5.03], [-56.68, 5.18], [-56.53, 5.53], [-56.0, 5.75], [-55.75, 5.65], [-55.5, 5.75], [-54.97, 5.53], [-54.82, 5.18], [-54.75, 5.15], [-54.5, 5.25], [-53.97, 5.03], [-53.82, 4.68], [-53.47, 4.53], [-53.25, 4.0], [-53.47, 3.47], [-53.82, 3.32], [-53.97, 2.97], [-54.32, 2.82], [-54.35, 2.75], [-54.32, 2.68], [-53.97, 2.53]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-03-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.52999999999997, 1.97], [-56.75, 2.5], [-56.52999999999997, 3.03], [-56.0, 3.25], [-55.75, 3.15], [-55.5, 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