{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:35:49.448903", "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-Jul-10_to_2023-Jul-13_44.5_46.0"}, "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": 2023070000296}, "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 10 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 13 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 75963.00119077983}, "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": ["E.Europe"]}, "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": 46.0}, "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": 44.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "44.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 40.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 45.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 45.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 48.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-07-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.47, 49.03], [41.0, 49.25], [41.25, 49.15], [41.5, 49.25], 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47.5], [45.15, 47.25], [45.18, 47.18], [45.53, 47.03], [45.75, 46.5], [45.65, 46.25], [45.75, 46.0], [45.53, 45.47], [45.18, 45.32], [45.03, 44.97], [44.5, 44.75], [44.25, 44.85], [44.0, 44.75], [43.47, 44.97], [43.32, 45.32], [43.25, 45.35], [43.0, 45.25], [42.75, 45.35], [42.5, 45.25], [42.25, 45.35], [42.0, 45.25], [41.47, 45.47], [41.25, 46.0], [41.35, 46.25], [41.25, 46.5], [41.35, 46.75], [41.32, 46.82], [40.97, 46.97], [40.82, 47.32], [40.47, 47.47], [40.25, 48.0], [40.35, 48.25], [40.25, 48.5], [40.47, 49.03]]]]}, "2023-07-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.47, 49.03], [41.0, 49.25], [41.25, 49.15], [41.5, 49.25], [42.03, 49.03], [42.18, 48.68], [42.25, 48.65], [42.5, 48.75], [43.0, 48.54], [43.5, 48.75], [44.03, 48.53], [44.18, 48.18], [44.25, 48.15], [44.5, 48.25], [45.03, 48.03], [45.25, 47.5], [45.15, 47.25], [45.18, 47.18], [45.53, 47.03], [45.75, 46.5], [45.65, 46.25], [45.75, 46.0], [45.53, 45.47], [45.18, 45.32], [45.03, 44.97], 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"value": -6.347726305354058}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.811143114867758}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.407482760270454, 20.159494423545766, 19.419147050567176, 20.95734849326169]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.761748910527615, 18.558163258692275, 18.429258944825847, 20.198325115513114]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.2668533097819985, -4.712341944907424, -5.494616227422441, -4.382098043883792]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.7519449192200796, -5.55090933893382, -6.347726305354058, -4.8092199097857815]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.371355904332958, -1.5167490717389585, -1.7656333502535617, -1.4161067035850994]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4892975059556768, -1.8429113312743046, -2.039201272454443, -1.4950557882414275]}}