{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:55.285858", "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": "2019-Jan-24_to_2019-Jan-28_72.0_39.5"}, "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": 2019010000767}, "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": "January 24 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 28 2019"}, "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": 89316.28958094679}, "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", "Kyrgyzstan", "Tajikistan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.C.Asia", "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": 39.5}, "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": 72.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "72.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 69.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 76.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 36.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 39.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-01-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[71.0, 40.25], [71.25, 40.15], [71.5, 40.25], [71.75, 40.15], 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38.88], [70.53, 38.47], [70.0, 38.25], [69.47, 38.47], [69.25, 39.0], [69.47, 39.53], [70.0, 39.75], [70.3, 39.63], [70.47, 40.03], [71.0, 40.25]]]]}, "2019-01-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[69.47, 38.47], [69.25, 39.0], [69.47, 39.53], [70.0, 39.75], [70.25, 39.65], [70.32, 39.68], [70.47, 40.03], [71.0, 40.25], [71.25, 40.15], [71.5, 40.25], [71.75, 40.15], [72.0, 40.25], [72.25, 40.15], [72.5, 40.25], [72.75, 40.15], [73.0, 40.25], [73.25, 40.15], [73.5, 40.25], [73.75, 40.15], [74.0, 40.25], [74.53, 40.03], [74.68, 39.68], [74.75, 39.65], [75.0, 39.75], [75.53, 39.53], [75.68, 39.18], [76.03, 39.03], [76.18, 38.68], [76.53, 38.53], [76.75, 38.0], [76.53, 37.47], [76.0, 37.25], [75.5, 37.46], [75.0, 37.25], [74.75, 37.35], [74.5, 37.25], [74.25, 37.35], [74.0, 37.25], [73.75, 37.35], [73.68, 37.32], [73.53, 36.97], [73.0, 36.75], [72.75, 36.85], [72.68, 36.82], [72.53, 36.47], [72.0, 36.25], [71.47, 36.47], [71.25, 37.0], [71.47, 37.53], [71.82, 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