{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:05:09.774044", "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": "2025-May-30_to_2025-Jun-02_33.0_37.5"}, "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": 2025050000749}, "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 30 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 02 2025"}, "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": 53882.48984101769}, "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": ["T\u00fcrkiye"]}, "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": 37.5}, "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": 33.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "33.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 31.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 34.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 36.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 38.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[30.82, 38.18], [30.85, 38.25], [30.75, 38.5], [30.97, 39.03], [31.5, 39.25], [31.75, 39.15], [32.0, 39.25], [32.25, 39.15], [32.5, 39.25], [33.03, 39.03], [33.18, 38.68], [33.25, 38.65], [33.5, 38.75], [33.75, 38.65], [34.0, 38.75], [34.53, 38.53], [34.75, 38.0], [34.65, 37.75], [34.75, 37.5], [34.53, 36.97], [34.0, 36.75], [33.75, 36.85], [33.68, 36.82], [33.65, 36.75], [33.75, 36.5], [33.53, 35.97], [33.0, 35.75], [32.75, 35.85], [32.5, 35.75], [31.97, 35.97], [31.82, 36.32], [31.75, 36.35], [31.5, 36.25], [30.97, 36.47], [30.82, 36.82], [30.47, 36.97], [30.25, 37.5], [30.47, 38.03], [30.82, 38.18]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-05-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.47, 36.97], [30.25, 37.5], [30.47, 38.03], [30.82, 38.18], [30.85, 38.25], [30.75, 38.5], [30.97, 39.03], [31.5, 39.25], [31.75, 39.15], [32.0, 39.25], [32.25, 39.15], [32.5, 39.25], [33.03, 39.03], [33.18, 38.68], [33.25, 38.65], [33.5, 38.75], [33.75, 38.65], [34.0, 38.75], [34.53, 38.53], [34.75, 38.0], [34.65, 37.75], [34.75, 37.5], [34.53, 36.97], [34.0, 36.75], [33.75, 36.85], [33.68, 36.82], [33.65, 36.75], [33.75, 36.5], [33.53, 35.97], [33.0, 35.75], [32.75, 35.85], [32.5, 35.75], [31.97, 35.97], [31.82, 36.32], [31.75, 36.35], [31.5, 36.25], [30.97, 36.47], [30.82, 36.82], [30.47, 36.97]]]]}, "2025-05-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.47, 36.97], [30.25, 37.5], [30.47, 38.03], [30.82, 38.18], [30.85, 38.25], [30.75, 38.5], [30.97, 39.03], [31.5, 39.25], [31.75, 39.15], [32.0, 39.25], [32.25, 39.15], [32.5, 39.25], [33.03, 39.03], [33.18, 38.68], [33.25, 38.65], [33.5, 38.75], [33.75, 38.65], [34.0, 38.75], [34.53, 38.53], [34.75, 38.0], [34.65, 37.75], [34.75, 37.5], [34.53, 36.97], [34.0, 36.75], [33.75, 36.85], [33.68, 36.82], [33.65, 36.75], [33.75, 36.5], [33.53, 35.97], [33.0, 35.75], [32.75, 35.85], [32.5, 35.75], [31.97, 35.97], [31.82, 36.32], [31.75, 36.35], [31.5, 36.25], [30.97, 36.47], [30.82, 36.82], [30.47, 36.97]]]]}, "2025-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.47, 36.97], [30.25, 37.5], [30.47, 38.03], [30.82, 38.18], [30.85, 38.25], [30.75, 38.5], [30.97, 39.03], [31.5, 39.25], [31.75, 39.15], [32.0, 39.25], [32.25, 39.15], [32.5, 39.25], [33.03, 39.03], [33.18, 38.68], [33.25, 38.65], [33.5, 38.75], [33.75, 38.65], [34.0, 38.75], [34.53, 38.53], [34.75, 38.0], [34.65, 37.75], [34.75, 37.5], [34.53, 36.97], [34.0, 36.75], [33.75, 36.85], [33.68, 36.82], [33.65, 36.75], [33.75, 36.5], [33.53, 35.97], [33.0, 35.75], [32.75, 35.85], [32.5, 35.75], [31.97, 35.97], [31.82, 36.32], [31.75, 36.35], [31.5, 36.25], [30.97, 36.47], [30.82, 36.82], [30.47, 36.97]]]]}, "2025-06-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.25, 38.0], [32.47, 38.53], [33.0, 38.75], [33.25, 38.65], [33.5, 38.75], [33.75, 38.65], [34.0, 38.75], [34.53, 38.53], [34.75, 38.0], [34.65, 37.75], [34.75, 37.5], [34.53, 36.97], [34.0, 36.75], [33.75, 36.85], [33.5, 36.75], [33.25, 36.85], [33.0, 36.75], [32.47, 36.97], [32.25, 37.5], [32.35, 37.75], [32.25, 38.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.822686249659284}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.44931779124756}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.92767948959812, 12.90897857203629, 13.645776829575084, 15.692817518446248]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [8.63819529215499, 8.407214101155603, 9.304605102539085, 14.385105387369833]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.4971739995400375, -4.7072990886193455, -4.182827349608121, -4.305045223156536]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.522097813020764, -5.822686249659284, -5.367632284458182, -4.8507578525586155]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5476902922863096, -1.6370857094466373, -1.4565493724851342, -1.4359257495454951]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8525157825612422, -2.122857032608794, -1.8531582647515876, -1.5170019428186838]}}