{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:26:55.815170", "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": "2021-Aug-14_to_2021-Aug-18_75.5_36.5"}, "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": 2021080000640}, "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": "August 14 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 18 2021"}, "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": 60202.735981668986}, "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": ["Afghanistan", "China", "India", "Pakistan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Tibetan-Plateau", "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": 36.5}, "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": 75.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "75.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 74.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 79.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 34.25}, "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": {"2021-08-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.0, 37.25], [79.53, 37.03], [79.75, 36.5], [79.53, 35.97], [79.0, 35.75], [78.47, 35.97], [78.25, 36.5], [78.47, 37.03], [79.0, 37.25]]]]}, "2021-08-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[73.97, 37.53], [74.5, 37.75], [75.03, 37.53], [75.18, 37.18], [75.25, 37.15], [75.5, 37.25], [75.75, 37.15], [76.0, 37.25], [76.25, 37.15], [76.5, 37.25], [76.75, 37.15], [77.0, 37.25], [77.53, 37.03], [77.68, 36.68], [78.03, 36.53], [78.18, 36.18], [78.25, 36.15], [78.32, 36.18], [78.35, 36.25], [78.25, 36.5], [78.47, 37.03], [79.0, 37.25], [79.53, 37.03], [79.75, 36.5], [79.65, 36.25], [79.75, 36.0], [79.53, 35.47], [79.18, 35.32], [79.15, 35.25], [79.25, 35.0], [79.15, 34.75], [79.25, 34.5], [79.03, 33.97], [78.5, 33.75], [78.25, 33.85], [78.0, 33.75], [77.47, 33.97], [77.32, 34.32], [77.25, 34.35], [77.0, 34.25], [76.75, 34.35], [76.5, 34.25], [75.97, 34.47], [75.82, 34.82], [75.75, 34.85], [75.5, 34.75], [74.97, 34.97], [74.75, 35.5], [74.88, 35.8], [74.75, 35.85], [74.5, 35.75], [73.97, 35.97], [73.75, 36.5], [73.85, 36.75], [73.75, 37.0], [73.97, 37.53]]]]}, "2021-08-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[73.97, 37.53], [74.5, 37.75], [75.03, 37.53], [75.18, 37.18], [75.25, 37.15], [75.5, 37.25], [75.75, 37.15], [76.0, 37.25], [76.25, 37.15], [76.5, 37.25], [76.75, 37.15], [77.0, 37.25], [77.53, 37.03], [77.68, 36.68], [78.03, 36.53], [78.18, 36.18], [78.25, 36.15], [78.32, 36.18], [78.35, 36.25], [78.25, 36.5], [78.47, 37.03], [79.0, 37.25], [79.53, 37.03], [79.75, 36.5], [79.65, 36.25], [79.75, 36.0], [79.53, 35.47], [79.18, 35.32], [79.15, 35.25], [79.25, 35.0], [79.15, 34.75], [79.25, 34.5], [79.03, 33.97], [78.5, 33.75], [78.25, 33.85], [78.0, 33.75], [77.47, 33.97], [77.32, 34.32], [77.25, 34.35], [77.0, 34.25], [76.75, 34.35], [76.5, 34.25], [75.97, 34.47], [75.82, 34.82], [75.75, 34.85], [75.5, 34.75], [74.97, 34.97], [74.75, 35.5], [74.88, 35.8], [74.75, 35.85], [74.5, 35.75], [73.97, 35.97], [73.75, 36.5], [73.85, 36.75], [73.75, 37.0], [73.97, 37.53]]]]}, 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