{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:50:56.127334", "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": "2023-Feb-07_to_2023-Feb-12_303.0_17.5"}, "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": 2023020000358}, "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 07 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 12 2023"}, "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": 208355.8911965397}, "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": ["Martinique", "Saint Lucia"]}, "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": ["Atlantic Ocean", "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": 17.5}, "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": 303.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "303.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 297.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 305.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 13.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 18.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-58.5, 13.75], [-58.75, 13.85], [-58.82, 13.82], [-58.97, 13.47], [-59.5, 13.25], [-59.75, 13.35], [-59.82, 13.32], [-59.97, 12.97], [-60.32, 12.82], [-60.47, 12.47], [-61.0, 12.25], [-61.25, 12.35], [-61.5, 12.25], [-61.75, 12.35], [-62.0, 12.25], [-62.25, 12.35], [-62.5, 12.25], [-63.03, 12.47], [-63.25, 13.0], [-63.03, 13.53], [-62.68, 13.68], [-62.53, 14.03], [-62.18, 14.18], [-62.04, 14.5], [-62.25, 15.0], [-62.15, 15.25], [-62.25, 15.5], [-62.03, 16.03], [-61.5, 16.25], [-61.25, 16.15], [-61.18, 16.18], [-61.03, 16.53], [-60.68, 16.68], [-60.53, 17.03], [-60.0, 17.25], [-59.75, 17.15], [-59.68, 17.18], [-59.53, 17.53], [-59.0, 17.75], [-58.75, 17.65], [-58.68, 17.68], [-58.53, 18.03], [-58.0, 18.25], [-57.75, 18.15], [-57.68, 18.18], [-57.53, 18.53], [-57.0, 18.75], [-56.75, 18.65], [-56.5, 18.75], [-55.97, 18.53], [-55.8, 18.12], [-55.5, 18.25], [-54.97, 18.03], [-54.82, 17.68], [-54.47, 17.53], [-54.25, 17.0], [-54.47, 16.47], [-55.0, 16.25], [-55.25, 16.35], [-55.32, 16.32], [-55.47, 15.97], [-55.82, 15.82], [-55.97, 15.47], [-56.5, 15.25], [-56.75, 15.35], [-56.82, 15.32], [-56.97, 14.97], [-57.32, 14.82], [-57.47, 14.47], [-57.82, 14.32], [-57.97, 13.97], [-58.5, 13.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Caribbean", "N.Atlantic-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-02-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.25, 16.0], [-60.02999999999997, 16.53], [-59.68000000000001, 16.68], [-59.52999999999997, 17.03], [-59.0, 17.25], [-58.47000000000003, 17.03], [-58.30000000000001, 16.62], [-58.0, 16.75], [-57.75, 16.65], [-57.68000000000001, 16.68], [-57.64999999999998, 16.75], [-57.75, 17.0], [-57.64999999999998, 17.25], [-57.75, 17.5], [-57.52999999999997, 18.03], [-57.0, 18.25], [-56.75, 18.15], [-56.5, 18.25], [-56.0, 18.04], [-55.5, 18.25], [-54.97000000000003, 18.03], [-54.81999999999999, 17.68], [-54.47000000000003, 17.53], [-54.25, 17.0], [-54.47000000000003, 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