{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:14:02.809342", "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-Oct-02_to_2021-Oct-06_99.5_51.0"}, "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": 2021100000165}, "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 02 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 06 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": 57693.732244127204}, "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": ["Mongolia", "Russian Federation"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "Europe"]}, "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": 51.0}, "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": 99.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "99.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 97.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 101.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 49.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 53.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[96.97, 51.53], [97.32, 51.68], [97.47, 52.03], [97.82, 52.18], [97.96, 52.5], [97.75, 53.0], [97.97, 53.53], [98.32, 53.68], 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50.5], [96.47, 51.03], [96.82, 51.18], [96.97, 51.53], [97.32, 51.68], [97.47, 52.03], [98.0, 52.25], [98.53, 52.03], [98.75, 51.5], [98.65, 51.25], [98.68, 51.18], [99.03, 51.03], [99.25, 50.5], [99.03, 49.97], [98.68, 49.82], [98.65, 49.75], [98.75, 49.5], [98.53, 48.97], [98.0, 48.75], [97.75, 48.85], [97.5, 48.75], [97.25, 48.85], [97.0, 48.75], [96.47, 48.97], [96.25, 49.5], [96.46, 50.0], [96.25, 50.5]]]]}, "2021-10-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[96.25, 50.5], [96.47, 51.03], [96.82, 51.18], [96.97, 51.53], [97.32, 51.68], [97.47, 52.03], [97.82, 52.18], [97.97, 52.53], [98.5, 52.75], [98.8, 52.63], [98.85, 52.75], [98.75, 53.0], [98.97, 53.53], [99.5, 53.75], [99.75, 53.65], [100.0, 53.75], [100.53, 53.53], [100.68, 53.18], [101.03, 53.03], [101.25, 52.5], [101.03, 51.97], [100.68, 51.82], [100.53, 51.47], [100.18, 51.32], [100.15, 51.25], [100.25, 51.0], [100.03, 50.47], [99.5, 50.25], [99.25, 50.35], [99.18, 50.32], [99.03, 49.97], [98.68, 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standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.894713804844007, -3.4161009003837006, -3.3602994639125625, -2.565873709223023, -1.7283443914206247]}}