{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:35:29.976865", "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-Jun-02_to_2023-Jun-04_31.0_57.0"}, "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": 2023060000145}, "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": "June 02 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 04 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 228279.35606382834}, "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": ["Belarus", "Estonia", "Latvia", "Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Europe", "West&Central-Europe"]}, "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": 57.0}, "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": 31.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "31.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 24.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 37.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 55.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 61.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-06-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.25, 57.0], [24.47, 57.53], [25.0, 57.75], [25.25, 57.65], [25.5, 57.75], [25.75, 57.65], [25.82, 57.68], [25.97, 58.03], [26.5, 58.25], [26.75, 58.15], [26.82, 58.18], [26.97, 58.53], [27.5, 58.75], [27.75, 58.65], [27.82, 58.68], [27.97, 59.03], [28.5, 59.25], [28.75, 59.15], [28.82, 59.18], [28.97, 59.53], [29.5, 59.75], [29.75, 59.65], [29.82, 59.68], [29.97, 60.03], [30.5, 60.25], [30.75, 60.15], [31.0, 60.25], [31.25, 60.15], [31.5, 60.25], [31.75, 60.15], [31.82, 60.18], [31.97, 60.53], [32.5, 60.75], [32.75, 60.65], [32.82, 60.68], [32.85, 60.75], [32.75, 61.0], [32.85, 61.25], [32.75, 61.5], [32.97, 62.03], [33.5, 62.25], [33.75, 62.15], [34.0, 62.25], [34.53, 62.03], [34.68, 61.68], [35.03, 61.53], [35.18, 61.18], [35.53, 61.03], [35.75, 60.5], [35.65, 60.25], [35.68, 60.18], [35.75, 60.15], [36.0, 60.25], [36.25, 60.15], [36.5, 60.25], [36.75, 60.15], [36.82, 60.18], [36.97, 60.53], [37.5, 60.75], [38.03, 60.53], [38.25, 60.0], [38.15, 59.75], [38.25, 59.5], [38.03, 58.97], [37.68, 58.82], [37.53, 58.47], [37.0, 58.25], [36.75, 58.35], [36.68, 58.32], [36.53, 57.97], [36.18, 57.82], [36.03, 57.47], [35.68, 57.32], [35.53, 56.97], [35.18, 56.82], [35.03, 56.47], [34.5, 56.25], [34.25, 56.35], [34.0, 56.25], [33.75, 56.35], [33.68, 56.32], [33.53, 55.97], [33.0, 55.75], [32.75, 55.85], [32.5, 55.75], [32.25, 55.85], [32.0, 55.75], [31.75, 55.85], [31.68, 55.82], [31.53, 55.47], [31.0, 55.25], [30.75, 55.35], [30.5, 55.25], [30.25, 55.35], [30.0, 55.25], [29.75, 55.35], [29.5, 55.25], [29.25, 55.35], [29.0, 55.25], [28.75, 55.35], [28.5, 55.25], [27.97, 55.47], [27.82, 55.82], [27.75, 55.85], [27.5, 55.75], [27.25, 55.85], [27.0, 55.75], [26.75, 55.85], [26.5, 55.75], [26.25, 55.85], [26.0, 55.75], [25.75, 55.85], [25.5, 55.75], [24.97, 55.97], [24.82, 56.32], [24.47, 56.47], [24.25, 57.0]]]]}, "2023-06-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.25, 57.0], [24.47, 57.53], [25.0, 57.75], [25.25, 57.65], [25.5, 57.75], [25.75, 57.65], [25.82, 57.68], [25.97, 58.03], [26.5, 58.25], [26.75, 58.15], [26.82, 58.18], [26.97, 58.53], [27.5, 58.75], [27.75, 58.65], [27.82, 58.68], [27.97, 59.03], [28.5, 59.25], [28.75, 59.15], [28.82, 59.18], [28.97, 59.53], [29.5, 59.75], [29.75, 59.65], [29.82, 59.68], [29.97, 60.03], [30.5, 60.25], [30.75, 60.15], [31.0, 60.25], [31.25, 60.15], [31.5, 60.25], [31.75, 60.15], [31.82, 60.18], [31.97, 60.53], [32.5, 60.75], [32.75, 60.65], [32.82, 60.68], [32.85, 60.75], [32.75, 61.0], [32.85, 61.25], [32.75, 61.5], [32.97, 62.03], [33.5, 62.25], [33.75, 62.15], [34.0, 62.25], [34.53, 62.03], [34.68, 61.68], [35.03, 61.53], [35.18, 61.18], [35.53, 61.03], [35.75, 60.5], [35.65, 60.25], [35.68, 60.18], [35.75, 60.15], [36.0, 60.25], [36.25, 60.15], [36.5, 60.25], [36.75, 60.15], [36.82, 60.18], [36.97, 60.53], [37.5, 60.75], [38.03, 60.53], [38.25, 60.0], [38.15, 59.75], [38.25, 59.5], [38.03, 58.97], [37.68, 58.82], [37.53, 58.47], [37.0, 58.25], [36.75, 58.35], [36.68, 58.32], [36.53, 57.97], [36.18, 57.82], [36.03, 57.47], [35.68, 57.32], [35.53, 56.97], [35.18, 56.82], [35.03, 56.47], [34.5, 56.25], [34.25, 56.35], [34.0, 56.25], [33.75, 56.35], [33.68, 56.32], [33.53, 55.97], [33.0, 55.75], [32.75, 55.85], [32.5, 55.75], [32.25, 55.85], [32.0, 55.75], [31.75, 55.85], [31.68, 55.82], [31.53, 55.47], [31.0, 55.25], [30.75, 55.35], [30.5, 55.25], [30.25, 55.35], [30.0, 55.25], [29.75, 55.35], [29.5, 55.25], [29.25, 55.35], [29.0, 55.25], [28.75, 55.35], [28.5, 55.25], [27.97, 55.47], [27.82, 55.82], [27.75, 55.85], [27.5, 55.75], [27.25, 55.85], [27.0, 55.75], [26.75, 55.85], [26.5, 55.75], [26.25, 55.85], [26.0, 55.75], [25.75, 55.85], [25.5, 55.75], [24.97, 55.97], [24.82, 56.32], [24.47, 56.47], [24.25, 57.0]]]]}, "2023-06-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.25, 57.0], [24.47, 57.53], [25.0, 57.75], [25.25, 57.65], [25.5, 57.75], [25.75, 57.65], [25.82, 57.68], [25.97, 58.03], [26.5, 58.25], [26.75, 58.15], [26.82, 58.18], [26.97, 58.53], [27.5, 58.75], [27.75, 58.65], [27.82, 58.68], [27.97, 59.03], [28.5, 59.25], [28.75, 59.15], [28.82, 59.18], [28.97, 59.53], [29.5, 59.75], [29.75, 59.65], [29.82, 59.68], [29.97, 60.03], [30.5, 60.25], [30.75, 60.15], [31.0, 60.25], [31.25, 60.15], [31.5, 60.25], [31.75, 60.15], [31.82, 60.18], [31.97, 60.53], [32.5, 60.75], [32.75, 60.65], [32.82, 60.68], [32.85, 60.75], [32.75, 61.0], [32.85, 61.25], [32.75, 61.5], [32.97, 62.03], [33.5, 62.25], [33.75, 62.15], [34.0, 62.25], [34.53, 62.03], [34.68, 61.68], [35.03, 61.53], [35.18, 61.18], [35.53, 61.03], [35.75, 60.5], [35.65, 60.25], [35.68, 60.18], [35.75, 60.15], [36.0, 60.25], [36.25, 60.15], [36.5, 60.25], [36.75, 60.15], [36.82, 60.18], [36.97, 60.53], [37.5, 60.75], [38.03, 60.53], [38.25, 60.0], [38.15, 59.75], [38.25, 59.5], [38.03, 58.97], [37.68, 58.82], [37.53, 58.47], [37.0, 58.25], [36.75, 58.35], [36.68, 58.32], [36.53, 57.97], [36.18, 57.82], [36.03, 57.47], [35.68, 57.32], [35.53, 56.97], [35.18, 56.82], [35.03, 56.47], [34.5, 56.25], [34.25, 56.35], [34.0, 56.25], [33.75, 56.35], [33.68, 56.32], [33.53, 55.97], [33.0, 55.75], [32.75, 55.85], [32.5, 55.75], [32.25, 55.85], [32.0, 55.75], [31.75, 55.85], [31.68, 55.82], [31.53, 55.47], [31.0, 55.25], [30.75, 55.35], [30.5, 55.25], [30.25, 55.35], [30.0, 55.25], [29.75, 55.35], [29.5, 55.25], [29.25, 55.35], [29.0, 55.25], [28.75, 55.35], [28.5, 55.25], [27.97, 55.47], [27.82, 55.82], [27.75, 55.85], [27.5, 55.75], [27.25, 55.85], [27.0, 55.75], [26.75, 55.85], [26.5, 55.75], [26.25, 55.85], [26.0, 55.75], [25.75, 55.85], [25.5, 55.75], [24.97, 55.97], [24.82, 56.32], [24.47, 56.47], [24.25, 57.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.573696105007514}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.390864843553067}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.608914663062535, 7.563209985131039, 9.076687414038304]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [4.842828088945282, 5.55971025141497, 7.210629619051019]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.709427918873298, -6.915786730919529, -5.547379880866365]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-9.573696105007514, -7.877495834819285, -6.411332093092369]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7445649755666675, -1.8046184496608764, -1.451515974063361]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.530177921381223, -2.0651302227034107, -1.729133778988493]}}