{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:54:48.254774", "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-Mar-22_to_2025-Mar-24_354.5_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": 2025030000532}, "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": "March 22 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 24 2025"}, "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": 51099.532098156786}, "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": ["Spain"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean"]}, "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": 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": 354.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "354.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 352.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 356.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 36.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 39.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-03-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.53, 38.53], [-7.0, 38.75], [-6.7, 38.62], [-6.65, 38.75], [-6.75, 39.0], [-6.53, 39.53], [-6.0, 39.75], [-5.75, 39.65], [-5.5, 39.75], [-5.0, 39.54], [-4.5, 39.75], [-3.97, 39.53], [-3.82, 39.18], [-3.47, 39.03], [-3.25, 38.5], [-3.35, 38.25], [-3.25, 38.0], [-3.35, 37.75], [-3.25, 37.5], [-3.47, 36.97], [-4.0, 36.75], [-4.25, 36.85], [-4.5, 36.75], [-4.8, 36.88], [-4.97, 36.47], [-5.5, 36.25], [-6.03, 36.47], [-6.18, 36.82], [-6.25, 36.85], [-6.5, 36.75], [-6.75, 36.85], [-7.0, 36.75], [-7.53, 36.97], [-7.75, 37.5], [-7.65, 37.75], [-7.75, 38.0], [-7.53, 38.53]]]]}, "2025-03-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.53, 38.53], [-7.0, 38.75], [-6.7, 38.62], [-6.65, 38.75], [-6.75, 39.0], [-6.53, 39.53], [-6.0, 39.75], [-5.75, 39.65], [-5.5, 39.75], [-5.0, 39.54], [-4.5, 39.75], [-3.97, 39.53], [-3.82, 39.18], [-3.47, 39.03], [-3.25, 38.5], [-3.35, 38.25], [-3.25, 38.0], [-3.35, 37.75], [-3.25, 37.5], [-3.47, 36.97], [-4.0, 36.75], [-4.25, 36.85], [-4.5, 36.75], [-4.8, 36.88], [-4.97, 36.47], [-5.5, 36.25], [-6.03, 36.47], [-6.18, 36.82], [-6.25, 36.85], [-6.5, 36.75], [-6.75, 36.85], [-7.0, 36.75], [-7.53, 36.97], [-7.75, 37.5], [-7.65, 37.75], [-7.75, 38.0], [-7.53, 38.53]]]]}, "2025-03-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.53, 38.53], [-7.0, 38.75], [-6.7, 38.62], [-6.65, 38.75], [-6.75, 39.0], [-6.53, 39.53], [-6.0, 39.75], [-5.75, 39.65], [-5.5, 39.75], [-5.0, 39.54], [-4.5, 39.75], [-3.97, 39.53], [-3.82, 39.18], [-3.47, 39.03], [-3.25, 38.5], [-3.35, 38.25], [-3.25, 38.0], [-3.35, 37.75], [-3.25, 37.5], [-3.47, 36.97], [-4.0, 36.75], [-4.25, 36.85], [-4.5, 36.75], [-4.8, 36.88], [-4.97, 36.47], [-5.5, 36.25], [-6.03, 36.47], [-6.18, 36.82], [-6.25, 36.85], [-6.5, 36.75], [-6.75, 36.85], [-7.0, 36.75], [-7.53, 36.97], [-7.75, 37.5], [-7.65, 37.75], [-7.75, 38.0], [-7.53, 38.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.339189577312823}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.593022333314434}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.116250973656122, 8.176860094827305, 9.454470328679179]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [6.867529805501306, 5.892905171712243, 7.659889475504599]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.335497044721435, -5.338924850514123, -4.104645104707745]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.065656958423858, -6.339189577312823, -4.632848018009156]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6417677091110368, -2.0222679051915957, -1.5396093053719189]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8623886995914831, -2.3716886367152634, -1.901112414802661]}}