{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:55.779050", "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": "2012-Jul-14_to_2012-Jul-21_345.0_20.0"}, "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": 2012070000815}, "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": "July 14 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 21 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 60835.89728044869}, "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": ["Mauritania", "Morocco"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "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": 20.0}, "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": 345.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "345.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 343.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 346.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 19.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 21.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-07-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.65, 20.25], [-16.75, 20.5], [-16.53, 21.03], [-16.0, 21.25], [-15.47, 21.03], [-15.32, 20.68], [-15.25, 20.65], [-15.0, 20.75], [-14.75, 20.65], [-14.5, 20.75], [-14.25, 20.65], [-14.0, 20.75], [-13.47, 20.53], [-13.25, 20.0], [-13.47, 19.47], [-13.82, 19.32], [-13.97, 18.97], [-14.5, 18.75], [-14.75, 18.85], [-15.0, 18.75], [-15.25, 18.85], [-15.5, 18.75], [-15.75, 18.85], [-16.0, 18.75], [-16.53, 18.97], [-16.75, 19.5], [-16.65, 19.75], [-16.75, 20.0], [-16.65, 20.25]]]]}, "2012-07-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.65, 20.25], [-16.75, 20.5], [-16.53, 21.03], [-16.0, 21.25], [-15.47, 21.03], [-15.32, 20.68], [-15.25, 20.65], [-15.0, 20.75], [-14.75, 20.65], [-14.5, 20.75], [-14.25, 20.65], [-14.0, 20.75], [-13.47, 20.53], [-13.25, 20.0], [-13.47, 19.47], [-13.82, 19.32], [-13.97, 18.97], [-14.5, 18.75], [-14.75, 18.85], [-15.0, 18.75], [-15.25, 18.85], [-15.5, 18.75], [-15.75, 18.85], [-16.0, 18.75], [-16.53, 18.97], [-16.75, 19.5], [-16.65, 19.75], [-16.75, 20.0], [-16.65, 20.25]]]]}, 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19.97], [-16.68, 20.32], [-17.03, 20.47], [-17.25, 21.0]]]]}, "2012-07-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-17.25, 21.0], [-17.03, 21.53], [-16.5, 21.75], [-16.25, 21.65], [-16.18, 21.68], [-16.03, 22.03], [-15.5, 22.25], [-15.25, 22.15], [-15.0, 22.25], [-14.47, 22.03], [-14.32, 21.68], [-13.97, 21.53], [-13.82, 21.18], [-13.47, 21.03], [-13.25, 20.5], [-13.47, 19.97], [-13.82, 19.82], [-13.97, 19.47], [-14.5, 19.25], [-14.75, 19.35], [-15.0, 19.25], [-15.25, 19.35], [-15.5, 19.25], [-16.03, 19.47], [-16.18, 19.82], [-16.53, 19.97], [-16.68, 20.32], [-17.03, 20.47], [-17.25, 21.0]]]]}, "2012-07-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-17.25, 21.0], [-17.03, 21.53], [-16.5, 21.75], [-16.25, 21.65], [-16.18, 21.68], [-16.03, 22.03], [-15.5, 22.25], [-15.25, 22.15], [-15.0, 22.25], [-14.47, 22.03], [-14.32, 21.68], [-13.97, 21.53], [-13.82, 21.18], [-13.47, 21.03], [-13.25, 20.5], [-13.47, 19.97], [-13.82, 19.82], [-13.97, 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