{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:38.341682", "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": "2017-Dec-07_to_2017-Dec-12_46.0_36.0"}, "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": 2017120000273}, "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 07 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 12 2017"}, "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": 60696.066544173074}, "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": ["Iran", "Iraq"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.C.Asia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "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": 36.0}, "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": 46.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "46.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 43.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 48.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 32.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 37.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-12-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.5, 37.25], [45.03, 37.03], [45.25, 36.5], [45.03, 35.97], 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35.85], [45.13, 35.8], [45.25, 35.5], [45.15, 35.25], [45.18, 35.18], [45.3, 35.13]]]]}, "2017-12-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.25, 36.0], [43.47, 36.53], [43.82, 36.68], [43.85, 36.75], [43.75, 37.0], [43.97, 37.53], [44.5, 37.75], [44.75, 37.65], [45.0, 37.75], [45.53, 37.53], [45.68, 37.18], [46.03, 37.03], [46.18, 36.68], [46.53, 36.53], [46.68, 36.18], [46.75, 36.15], [47.0, 36.25], [47.53, 36.03], [47.75, 35.5], [47.65, 35.25], [47.68, 35.18], [47.75, 35.15], [48.0, 35.25], [48.53, 35.03], [48.68, 34.68], [49.03, 34.53], [49.25, 34.0], [49.03, 33.47], [48.5, 33.25], [48.2, 33.38], [48.03, 32.97], [47.5, 32.75], [47.2, 32.88], [47.03, 32.47], [46.5, 32.25], [45.97, 32.47], [45.82, 32.82], [45.47, 32.97], [45.25, 33.5], [45.35, 33.75], [45.3, 33.88], [45.0, 33.75], [44.47, 33.97], [44.32, 34.32], [43.97, 34.47], [43.75, 35.0], [43.85, 35.25], [43.82, 35.32], [43.47, 35.47], [43.25, 36.0]], [[45.3, 35.13], [45.46, 35.5], [45.32, 35.82], [45.25, 35.85], [45.13, 35.8], [45.25, 35.5], [45.15, 35.25], [45.18, 35.18], [45.3, 35.13]]]]}, "2017-12-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.25, 36.0], [43.47, 36.53], [43.88, 36.7], [43.75, 37.0], [43.97, 37.53], [44.5, 37.75], [44.75, 37.65], [45.0, 37.75], [45.53, 37.53], [45.68, 37.18], [46.03, 37.03], [46.18, 36.68], [46.53, 36.53], [46.68, 36.18], [46.75, 36.15], [47.0, 36.25], [47.53, 36.03], [47.75, 35.5], [47.65, 35.25], [47.68, 35.18], [47.75, 35.15], [48.0, 35.25], [48.53, 35.03], [48.68, 34.68], [49.03, 34.53], [49.25, 34.0], [49.03, 33.47], [48.5, 33.25], [48.2, 33.38], [48.03, 32.97], [47.5, 32.75], [47.2, 32.88], [47.03, 32.47], [46.5, 32.25], [45.97, 32.47], [45.82, 32.82], [45.47, 32.97], [45.25, 33.5], [45.35, 33.75], [45.3, 33.88], [45.0, 33.75], [44.47, 33.97], [44.32, 34.32], [43.97, 34.47], [43.75, 35.0], [43.85, 35.25], [43.82, 35.32], [43.47, 35.47], [43.25, 36.0]], [[45.3, 35.13], [45.46, 35.5], [45.32, 35.82], [45.25, 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