{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:08:25.632446", "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-Jul-04_to_2017-Jul-08_78.5_62.0"}, "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": 2017070000198}, "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 04 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 08 2017"}, "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": 54214.605365749536}, "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": ["Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Siberia"]}, "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": 62.0}, "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": 78.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "78.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 71.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 78.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 60.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 62.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-07-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[71.47, 62.03], [72.0, 62.25], [72.25, 62.15], [72.5, 62.25], 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"MultiPolygon", "coordinates": [[[[71.47, 62.03], [72.0, 62.25], [72.25, 62.15], [72.5, 62.25], [72.75, 62.15], [72.82, 62.18], [72.85, 62.25], [72.75, 62.5], [72.97, 63.03], [73.5, 63.25], [73.75, 63.15], [74.0, 63.25], [74.25, 63.15], [74.5, 63.25], [74.75, 63.15], [75.0, 63.25], [75.25, 63.15], [75.5, 63.25], [75.75, 63.15], [76.0, 63.25], [76.53, 63.03], [76.68, 62.68], [76.75, 62.65], [77.0, 62.75], [77.25, 62.65], [77.5, 62.75], [77.75, 62.65], [78.0, 62.75], [78.25, 62.65], [78.5, 62.75], [79.03, 62.53], [79.25, 62.0], [79.03, 61.47], [78.5, 61.25], [78.25, 61.35], [78.18, 61.32], [78.03, 60.97], [77.5, 60.75], [77.25, 60.85], [77.0, 60.75], [76.75, 60.85], [76.5, 60.75], [76.25, 60.85], [76.18, 60.82], [76.03, 60.47], [75.5, 60.25], [75.25, 60.35], [75.0, 60.25], [74.75, 60.35], [74.5, 60.25], [74.25, 60.35], [74.0, 60.25], [73.75, 60.35], [73.5, 60.25], [73.25, 60.35], [73.0, 60.25], [72.75, 60.35], [72.5, 60.25], [72.25, 60.35], [72.0, 60.25], [71.47, 60.47], [71.25, 61.0], 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