{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:33.600883", "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": "2021-Sep-24_to_2021-Sep-28_310.0_-7.0"}, "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": 2021090000826}, "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": "September 24 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 28 2021"}, "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": 207132.73792962637}, "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": -7.0}, "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": 310.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "310.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 307.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 312.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -12.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -6.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-52.68, -8.82], [-52.53, -8.47], [-52.18, -8.32], [-52.15, -8.25], [-52.18, -8.18], [-52.53, -8.03], [-52.75, -7.5], [-52.53, -6.97], [-52.0, -6.75], [-51.75, -6.85], [-51.68, -6.82], [-51.53, -6.47], [-51.18, -6.32], [-51.03, -5.97], [-50.68, -5.82], [-50.53, -5.47], [-50.0, -5.25], [-49.47, -5.47], [-49.32, -5.82], [-48.97, -5.97], [-48.82, -6.32], [-48.47, -6.47], [-48.25, -7.0], [-48.47, -7.53], [-49.0, -7.75], [-49.25, -7.65], [-49.32, -7.68], [-49.35, -7.75], [-49.25, -8.0], [-49.35, -8.25], [-49.25, -8.5], [-49.37, -8.8], [-48.97, -8.97], [-48.75, -9.5], [-48.87, -9.8], [-48.47, -9.97], [-48.32, -10.32], [-47.97, -10.47], [-47.82, -10.82], [-47.47, -10.97], [-47.25, -11.5], [-47.35, -11.75], [-47.25, -12.0], [-47.47, -12.53], [-47.82, -12.68], [-47.97, -13.03], [-48.5, -13.25], [-49.03, -13.03], [-49.18, -12.68], [-49.25, -12.65], [-49.5, -12.75], [-49.75, -12.65], [-50.0, -12.75], [-50.25, -12.65], [-50.5, -12.75], [-50.75, -12.65], [-51.0, -12.75], [-51.53, -12.53], [-51.75, -12.0], [-51.65, -11.75], [-51.68, -11.68], [-52.03, -11.53], [-52.18, -11.18], [-52.25, -11.15], [-52.5, -11.25], [-53.03, -11.03], [-53.25, -10.5], [-53.15, -10.25], [-53.25, -10.0], [-53.15, -9.75], [-53.25, -9.5], [-53.03, -8.97], [-52.68, -8.82]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America", "N.E.South-America", "South-American-Monsoon"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-09-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-53.25, -10.0], [-53.14999999999998, -9.75], [-53.25, -9.5], [-53.02999999999997, -8.97], [-52.68000000000001, -8.82], [-52.52999999999997, -8.47], [-52.0, -8.25], [-52.52999999999997, -8.03], [-52.75, -7.5], [-52.52999999999997, -6.97], [-52.0, -6.75], [-51.75, -6.85], [-51.68000000000001, -6.82], [-51.52999999999997, -6.47], [-51.18000000000001, -6.32], [-51.02999999999997, -5.97], [-50.68000000000001, -5.82], [-50.52999999999997, -5.47], [-50.0, -5.25], 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