{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:55:39.590212", "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": "2023-Oct-30_to_2023-Nov-03_105.5_63.5"}, "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": 2023100000691}, "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 30 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 03 2023"}, "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": 56278.85557595685}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 63.5}, "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": 105.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "105.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 104.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 109.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 62.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 65.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[110.03, 63.53], [110.25, 63.0], [110.03, 62.47], [109.68, 62.32], [109.53, 61.97], [109.0, 61.75], [108.75, 61.85], 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"Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-10-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[109.5, 62.25], [108.97, 62.47], [108.75, 63.0], [108.97, 63.53], [109.5, 63.75], [110.03, 63.53], [110.25, 63.0], [110.03, 62.47], [109.5, 62.25]]], [[[107.25, 64.65], [107.5, 64.75], [107.75, 64.65], [108.0, 64.75], [108.53, 64.53], [108.75, 64.0], [108.65, 63.75], [108.75, 63.5], [108.53, 62.97], [108.0, 62.75], [107.75, 62.85], [107.5, 62.75], [106.97, 62.97], [106.82, 63.32], [106.47, 63.47], [106.25, 64.0], [106.47, 64.53], [107.0, 64.75], [107.25, 64.65]]], [[[105.0, 65.25], [105.25, 65.15], [105.5, 65.25], [106.03, 65.03], [106.25, 64.5], [106.15, 64.25], [106.25, 64.0], [106.15, 63.75], [106.25, 63.5], [106.03, 62.97], [105.5, 62.75], [104.97, 62.97], [104.82, 63.32], [104.47, 63.47], [104.25, 64.0], [104.35, 64.25], [104.25, 64.5], [104.47, 65.03], [105.0, 65.25]]]]}, 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"anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3407556882374807, -1.611324969649697, -1.9218423661457333, -1.6736301573300427, -1.4711857888750377]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4060567502888834, -2.029682505816488, -2.3248776901920425, -1.981696964159431, -1.6634589974700413]}}