{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:54:48.533126", "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-23_to_2025-Mar-25_355.5_34.5"}, "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": 2025030000550}, "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 23 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 25 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": 63834.856071838105}, "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": ["Morocco"]}, "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": ["Africa"]}, "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": 34.5}, "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": 355.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "355.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 352.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 356.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 33.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 35.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-03-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.03, 32.97], [-8.25, 33.5], [-8.03, 34.03], [-7.5, 34.25], [-7.25, 34.15], [-7.18, 34.18], [-7.03, 34.53], [-6.68, 34.68], [-6.65, 34.75], [-6.75, 35.0], [-6.53, 35.53], [-6.18, 35.68], [-6.03, 36.03], [-5.5, 36.25], [-4.97, 36.03], [-4.82, 35.68], [-4.75, 35.65], [-4.5, 35.75], [-4.25, 35.65], [-4.0, 35.75], [-3.75, 35.65], [-3.5, 35.75], [-2.97, 35.53], [-2.75, 35.0], [-2.85, 34.75], [-2.75, 34.5], [-2.97, 33.97], [-3.32, 33.82], [-3.47, 33.47], [-3.82, 33.32], [-3.97, 32.97], [-4.5, 32.75], [-4.75, 32.85], [-5.0, 32.75], [-5.25, 32.85], [-5.5, 32.75], [-5.75, 32.85], [-6.0, 32.75], [-6.5, 32.96], [-7.0, 32.75], [-7.25, 32.85], [-7.5, 32.75], [-8.03, 32.97]]]]}, "2025-03-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.03, 32.97], [-8.25, 33.5], [-8.03, 34.03], [-7.5, 34.25], [-7.25, 34.15], [-7.18, 34.18], [-7.03, 34.53], [-6.68, 34.68], [-6.65, 34.75], [-6.75, 35.0], [-6.53, 35.53], [-6.18, 35.68], [-6.03, 36.03], [-5.5, 36.25], [-4.97, 36.03], [-4.82, 35.68], [-4.75, 35.65], [-4.5, 35.75], [-4.25, 35.65], [-4.0, 35.75], [-3.75, 35.65], [-3.5, 35.75], [-2.97, 35.53], [-2.75, 35.0], [-2.85, 34.75], [-2.75, 34.5], [-2.97, 33.97], [-3.32, 33.82], [-3.47, 33.47], [-3.82, 33.32], [-3.97, 32.97], [-4.5, 32.75], [-4.75, 32.85], [-5.0, 32.75], [-5.25, 32.85], [-5.5, 32.75], [-5.75, 32.85], [-6.0, 32.75], [-6.5, 32.96], [-7.0, 32.75], [-7.25, 32.85], [-7.5, 32.75], [-8.03, 32.97]]]]}, "2025-03-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.03, 32.97], [-8.25, 33.5], [-8.03, 34.03], [-7.5, 34.25], [-7.25, 34.15], [-7.18, 34.18], [-7.03, 34.53], [-6.68, 34.68], [-6.65, 34.75], [-6.75, 35.0], [-6.53, 35.53], [-6.18, 35.68], [-6.03, 36.03], [-5.5, 36.25], [-4.97, 36.03], [-4.82, 35.68], [-4.75, 35.65], [-4.5, 35.75], [-4.25, 35.65], [-4.0, 35.75], [-3.75, 35.65], [-3.5, 35.75], [-2.97, 35.53], [-2.75, 35.0], [-2.85, 34.75], [-2.75, 34.5], [-2.97, 33.97], [-3.32, 33.82], [-3.47, 33.47], [-3.82, 33.32], [-3.97, 32.97], [-4.5, 32.75], [-4.75, 32.85], [-5.0, 32.75], [-5.25, 32.85], [-5.5, 32.75], [-5.75, 32.85], [-6.0, 32.75], [-6.5, 32.96], [-7.0, 32.75], [-7.25, 32.85], [-7.5, 32.75], [-8.03, 32.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.731417311667826}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.143235604684287}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.514230041503879, 9.588401845296175, 9.8720056152344]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.6302912394206146, 3.4522071838379134, 4.080804443359398]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.204726640836743, -4.232561087948457, -3.9924190852676635]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.486831122428725, -5.731417311667826, -5.168944063643039]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6308979290430008, -1.630061078895211, -1.5191804695990623]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9822480673380278, -1.911327195765909, -1.6925120173327914]}}