{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:20:41.911189", "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": "2020-Jul-19_to_2020-Jul-23_78.0_31.5"}, "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": 2020070000689}, "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 19 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 23 2020"}, "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": 58480.40797701098}, "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": ["China", "India", "Nepal"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Tibetan-Plateau"]}, "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": 31.5}, "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": 78.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "78.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 77.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 82.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 29.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 32.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-07-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[82.5, 30.75], [83.03, 30.53], [83.25, 30.0], [83.03, 29.47], [82.5, 29.25], [81.97, 29.47], [81.75, 30.0], [81.97, 30.53], [82.5, 30.75]]]]}, "2020-07-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[81.97, 29.47], [81.75, 30.0], [81.97, 30.53], [82.5, 30.75], [83.03, 30.53], [83.25, 30.0], [83.03, 29.47], [82.5, 29.25], [81.97, 29.47]]], [[[76.75, 31.5], [76.97, 32.03], [77.5, 32.25], [77.75, 32.15], [78.0, 32.25], [78.53, 32.03], [78.75, 31.5], [78.53, 30.97], [78.0, 30.75], [77.75, 30.85], [77.5, 30.75], [76.97, 30.97], [76.75, 31.5]]]]}, "2020-07-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[76.97, 32.53], [77.5, 32.75], [78.03, 32.53], [78.18, 32.18], [78.25, 32.15], [78.5, 32.25], [78.75, 32.15], [79.0, 32.25], [79.53, 32.03], [79.68, 31.68], [79.75, 31.65], [80.0, 31.75], [80.53, 31.53], [80.7, 31.13], [81.0, 31.25], [81.25, 31.15], [81.5, 31.25], [81.75, 31.15], [82.0, 31.25], [82.53, 31.03], [82.68, 30.68], [83.03, 30.53], [83.25, 30.0], [83.03, 29.47], [82.5, 29.25], [82.25, 29.35], [82.18, 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