{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:20:13.453420", "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": "2022-May-21_to_2022-May-29_296.5_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": 2022050000820}, "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": "May 21 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 29 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 9}, "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": 131508.40761525114}, "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": ["Guyana", "Venezuela, Bolivarian Republic of"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": ["Caribbean Sea"]}, "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": 296.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "296.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 295.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 299.0}, "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": 10.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-60.47, 6.53], [-60.25, 6.0], [-60.47, 5.47], [-60.82, 5.32], [-60.97, 4.97], [-61.5, 4.75], [-62.03, 4.97], [-62.2, 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"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": {"2022-05-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.25, 6.0], [-62.02999999999997, 6.53], [-61.5, 6.75], [-61.25, 6.65], [-61.0, 6.75], [-60.47000000000003, 6.53], [-60.25, 6.0], [-60.47000000000003, 5.47], [-60.81999999999999, 5.32], [-60.97000000000003, 4.97], [-61.5, 4.75], [-62.02999999999997, 4.97], [-62.25, 5.5], [-62.14999999999998, 5.75], [-62.25, 6.0]]]]}, "2022-05-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.75, 6.5], [-64.52999999999997, 7.03], [-64.18, 7.18], [-64.14999999999998, 7.25], [-64.25, 7.5], [-64.02999999999997, 8.03], [-63.68000000000001, 8.18], [-63.52999999999997, 8.53], [-63.18000000000001, 8.68], [-63.14999999999998, 8.75], [-63.25, 9.0], 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