{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:39.438818", "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": "2011-Oct-31_to_2011-Nov-06_54.0_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": 2011100001420}, "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": "October 31 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 06 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 58900.458440912844}, "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": ["Oman", "Yemen"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Arabian-Peninsula"]}, "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": ["Arabian 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": 54.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "54.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 52.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 55.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 16.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 18.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-10-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[53.47, 16.97], [53.25, 17.5], [53.47, 18.03], [54.0, 18.25], 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17.32], [55.53, 16.97], [55.0, 16.75], [54.75, 16.85], [54.5, 16.75], [54.25, 16.85], [54.0, 16.75], [53.75, 16.85], [53.68, 16.82], [53.53, 16.47], [53.0, 16.25], [52.75, 16.35], [52.5, 16.25], [51.97, 16.47], [51.75, 17.0], [51.96, 17.5], [51.75, 18.0], [51.85, 18.25], [51.75, 18.5], [51.97, 19.03]]]]}, "2011-11-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.97, 19.03], [52.5, 19.25], [53.03, 19.03], [53.18, 18.68], [53.25, 18.65], [53.32, 18.68], [53.47, 19.03], [54.0, 19.25], [54.25, 19.15], [54.5, 19.25], [55.03, 19.03], [55.18, 18.68], [55.25, 18.65], [55.5, 18.75], [56.03, 18.53], [56.25, 18.0], [56.03, 17.47], [55.68, 17.32], [55.53, 16.97], [55.0, 16.75], [54.75, 16.85], [54.5, 16.75], [54.25, 16.85], [54.18, 16.82], [54.03, 16.47], [53.5, 16.25], [53.25, 16.35], [53.0, 16.25], [52.75, 16.35], [52.5, 16.25], [51.97, 16.47], [51.75, 17.0], [51.96, 17.5], [51.75, 18.0], [51.85, 18.25], [51.75, 18.5], [51.97, 19.03]]]]}, "2011-11-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.97, 19.03], [52.5, 19.25], [53.03, 19.03], [53.18, 18.68], [53.25, 18.65], [53.32, 18.68], [53.47, 19.03], [54.0, 19.25], [54.25, 19.15], [54.5, 19.25], [55.03, 19.03], [55.18, 18.68], [55.25, 18.65], [55.5, 18.75], [56.03, 18.53], [56.25, 18.0], [56.03, 17.47], [55.68, 17.32], [55.53, 16.97], [55.13, 16.8], [55.25, 16.5], [55.03, 15.97], [54.5, 15.75], [53.97, 15.97], [53.82, 16.32], [53.75, 16.35], [53.5, 16.25], [53.25, 16.35], [53.0, 16.25], [52.75, 16.35], [52.5, 16.25], [51.97, 16.47], [51.75, 17.0], [51.96, 17.5], [51.75, 18.0], [51.85, 18.25], [51.75, 18.5], [51.97, 19.03]]]]}, "2011-11-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.97, 16.47], [51.75, 17.0], [51.97, 17.53], [52.5, 17.75], [52.75, 17.65], [52.82, 17.68], [52.97, 18.03], [53.5, 18.25], [53.75, 18.15], [54.0, 18.25], [54.53, 18.03], [54.75, 17.5], [54.65, 17.25], [54.68, 17.18], [55.03, 17.03], [55.25, 16.5], [55.03, 15.97], [54.5, 15.75], 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