{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:43.067925", "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": "2018-Dec-28_to_2019-Jan-01_302.0_-13.0"}, "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": 2018120000914}, "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": "December 28 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 01 2019"}, "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": 135686.54114941292}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["South-American-Monsoon"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["South 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": -13.0}, "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": 302.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "302.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 299.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 304.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -14.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -10.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-12-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.53, -11.47], [-60.18, -11.32], [-60.15, -11.25], 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[-60.65, -12.25], [-60.75, -12.0], [-60.65, -11.75]]]]}, "2018-12-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.65, -11.75], [-60.75, -11.5], [-60.53, -10.97], [-60.18, -10.82], [-60.15, -10.75], [-60.25, -10.5], [-60.03, -9.97], [-59.5, -9.75], [-58.97, -9.97], [-58.82, -10.32], [-58.47, -10.47], [-58.32, -10.82], [-58.25, -10.85], [-58.0, -10.75], [-57.47, -10.97], [-57.32, -11.32], [-57.25, -11.35], [-57.18, -11.32], [-57.03, -10.97], [-56.5, -10.75], [-55.97, -10.97], [-55.75, -11.5], [-55.85, -11.75], [-55.75, -12.0], [-55.85, -12.25], [-55.75, -12.5], [-55.85, -12.75], [-55.82, -12.82], [-55.75, -12.85], [-55.5, -12.75], [-54.97, -12.97], [-54.75, -13.5], [-54.97, -14.03], [-55.32, -14.18], [-55.47, -14.53], [-56.0, -14.75], [-56.25, -14.65], [-56.5, -14.75], [-56.75, -14.65], [-56.82, -14.68], [-56.97, -15.03], [-57.5, -15.25], [-57.75, -15.15], [-58.0, -15.25], [-58.53, -15.03], [-58.68, -14.68], [-59.03, -14.53], [-59.25, -14.0], [-59.15, -13.75], 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