{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:19:59.010743", "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": "2022-May-05_to_2022-May-07_47.0_52.0"}, "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": 2022050000264}, "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": "May 05 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 07 2022"}, "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": 63410.981468551196}, "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": 52.0}, "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": 47.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "47.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 44.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 50.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 50.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 53.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[43.82, 51.68], [43.97, 52.03], [44.5, 52.25], [44.75, 52.15], [44.82, 52.18], [44.97, 52.53], [45.5, 52.75], [45.75, 52.65], [46.0, 52.75], [46.25, 52.65], [46.5, 52.75], [46.75, 52.65], [46.82, 52.68], [46.97, 53.03], [47.5, 53.25], [48.0, 53.04], [48.32, 53.18], [48.47, 53.53], [49.0, 53.75], [49.53, 53.53], [49.7, 53.13], [50.0, 53.25], [50.53, 53.03], [50.75, 52.5], [50.65, 52.25], [50.75, 52.0], [50.53, 51.47], [50.0, 51.25], [49.75, 51.35], [49.5, 51.25], [49.25, 51.35], [49.0, 51.25], [48.75, 51.35], [48.68, 51.32], [48.53, 50.97], [48.0, 50.75], [47.75, 50.85], [47.68, 50.82], [47.53, 50.47], [47.0, 50.25], [46.75, 50.35], [46.68, 50.32], [46.53, 49.97], [46.0, 49.75], [45.75, 49.85], [45.5, 49.75], [45.25, 49.85], [45.0, 49.75], [44.75, 49.85], [44.5, 49.75], [44.25, 49.85], [44.0, 49.75], [43.47, 49.97], [43.25, 50.5], [43.35, 50.75], [43.25, 51.0], [43.47, 51.53], [43.82, 51.68]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Europe"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-05-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.25, 51.0], [43.47, 51.53], [43.82, 51.68], [43.97, 52.03], [44.5, 52.25], [44.75, 52.15], [44.82, 52.18], [44.97, 52.53], [45.5, 52.75], [45.75, 52.65], [46.0, 52.75], [46.25, 52.65], [46.5, 52.75], [46.75, 52.65], [46.82, 52.68], [46.97, 53.03], [47.5, 53.25], [48.0, 53.04], [48.32, 53.18], [48.47, 53.53], [49.0, 53.75], [49.53, 53.53], [49.7, 53.13], [50.0, 53.25], [50.53, 53.03], [50.75, 52.5], [50.65, 52.25], [50.75, 52.0], [50.53, 51.47], [50.0, 51.25], [49.75, 51.35], [49.5, 51.25], [49.25, 51.35], [49.0, 51.25], [48.75, 51.35], [48.68, 51.32], [48.53, 50.97], [48.0, 50.75], [47.75, 50.85], [47.68, 50.82], [47.53, 50.47], [47.0, 50.25], [46.75, 50.35], [46.68, 50.32], [46.53, 49.97], [46.0, 49.75], [45.75, 49.85], [45.5, 49.75], [45.25, 49.85], [45.0, 49.75], [44.75, 49.85], [44.5, 49.75], [44.25, 49.85], [44.0, 49.75], [43.47, 49.97], [43.25, 50.5], [43.35, 50.75], [43.25, 51.0]]]]}, "2022-05-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.25, 51.0], [43.47, 51.53], [43.82, 51.68], [43.97, 52.03], [44.5, 52.25], [44.75, 52.15], [44.82, 52.18], [44.97, 52.53], [45.5, 52.75], [45.75, 52.65], [46.0, 52.75], [46.25, 52.65], [46.5, 52.75], [46.75, 52.65], [46.82, 52.68], [46.97, 53.03], [47.5, 53.25], [48.0, 53.04], [48.32, 53.18], [48.47, 53.53], [49.0, 53.75], [49.53, 53.53], [49.7, 53.13], [50.0, 53.25], [50.53, 53.03], [50.75, 52.5], [50.65, 52.25], [50.75, 52.0], [50.53, 51.47], [50.0, 51.25], [49.75, 51.35], [49.5, 51.25], [49.25, 51.35], [49.0, 51.25], [48.75, 51.35], [48.68, 51.32], [48.53, 50.97], [48.0, 50.75], [47.75, 50.85], [47.68, 50.82], [47.53, 50.47], [47.0, 50.25], [46.75, 50.35], [46.68, 50.32], [46.53, 49.97], [46.0, 49.75], [45.75, 49.85], [45.5, 49.75], [45.25, 49.85], [45.0, 49.75], [44.75, 49.85], [44.5, 49.75], [44.25, 49.85], [44.0, 49.75], [43.47, 49.97], [43.25, 50.5], [43.35, 50.75], [43.25, 51.0]]]]}, "2022-05-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.25, 51.0], [43.47, 51.53], [43.82, 51.68], [43.97, 52.03], [44.5, 52.25], [44.75, 52.15], [44.82, 52.18], [44.97, 52.53], [45.5, 52.75], [45.75, 52.65], [46.0, 52.75], [46.25, 52.65], [46.5, 52.75], [46.75, 52.65], [46.82, 52.68], [46.97, 53.03], [47.5, 53.25], [48.0, 53.04], [48.32, 53.18], [48.47, 53.53], [49.0, 53.75], [49.53, 53.53], [49.7, 53.13], [50.0, 53.25], [50.53, 53.03], [50.75, 52.5], [50.65, 52.25], [50.75, 52.0], [50.53, 51.47], [50.0, 51.25], [49.75, 51.35], [49.5, 51.25], [49.25, 51.35], [49.0, 51.25], [48.75, 51.35], [48.68, 51.32], [48.53, 50.97], [48.0, 50.75], [47.75, 50.85], [47.68, 50.82], [47.53, 50.47], [47.0, 50.25], [46.75, 50.35], [46.68, 50.32], [46.53, 49.97], [46.0, 49.75], [45.75, 49.85], [45.5, 49.75], [45.25, 49.85], [45.0, 49.75], [44.75, 49.85], [44.5, 49.75], [44.25, 49.85], [44.0, 49.75], [43.47, 49.97], [43.25, 50.5], [43.35, 50.75], [43.25, 51.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.890092172729226}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.181644775096805}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.74881717192801, 6.476490542299302, 9.039661143378908]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [6.096467561023076, 5.716344775485766, 8.26907974564756]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.868050391353033, -7.454987070076136, -5.221896863861242]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.145921760743079, -7.890092172729226, -5.556657577011151]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5115114510167673, -1.9472763008617857, -1.3726769644848906]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8257917410122815, -2.0619266455478806, -1.4671978202224392]}}