{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:56:10.168162", "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-Jul-12_to_2025-Jul-15_359.0_17.5"}, "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": 2025070000535}, "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": "July 12 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 15 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": 53214.19716345885}, "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": ["Mali"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "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": 17.5}, "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": 359.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "359.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 357.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 361.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 15.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 18.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-07-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.0, 16.75], [0.53, 16.53], [0.75, 16.0], [0.53, 15.47], [0.0, 15.25], [-0.53, 15.47], [-0.75, 16.0], [-0.53, 16.53], [0.0, 16.75]]]]}, "2025-07-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-2.53, 18.03], [-2.0, 18.25], [-1.75, 18.15], [-1.68, 18.18], [-1.53, 18.53], [-1.0, 18.75], [-0.47, 18.53], [-0.32, 18.18], [0.03, 18.03], [0.18, 17.68], [0.25, 17.65], [0.5, 17.75], [0.75, 17.65], [1.0, 17.75], [1.53, 17.53], [1.75, 17.0], [1.65, 16.75], [1.75, 16.5], [1.53, 15.97], [1.0, 15.75], [0.75, 15.85], [0.68, 15.82], [0.53, 15.47], [0.0, 15.25], [-0.53, 15.47], [-0.68, 15.82], [-0.75, 15.85], [-1.0, 15.75], [-1.53, 15.97], [-1.68, 16.32], [-1.75, 16.35], [-2.0, 16.25], [-2.53, 16.47], [-2.75, 17.0], [-2.65, 17.25], [-2.75, 17.5], [-2.53, 18.03]]]]}, "2025-07-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-2.53, 18.03], [-2.0, 18.25], [-1.75, 18.15], [-1.68, 18.18], [-1.53, 18.53], [-1.0, 18.75], [-0.47, 18.53], [-0.32, 18.18], [0.03, 18.03], [0.18, 17.68], [0.25, 17.65], [0.5, 17.75], [0.75, 17.65], [1.0, 17.75], [1.53, 17.53], [1.75, 17.0], [1.65, 16.75], [1.75, 16.5], [1.53, 15.97], [1.0, 15.75], [0.75, 15.85], [0.68, 15.82], [0.53, 15.47], [0.0, 15.25], [-0.53, 15.47], [-0.68, 15.82], [-0.75, 15.85], [-1.0, 15.75], [-1.53, 15.97], [-1.68, 16.32], [-1.75, 16.35], [-2.0, 16.25], [-2.53, 16.47], [-2.75, 17.0], [-2.65, 17.25], [-2.75, 17.5], [-2.53, 18.03]]]]}, "2025-07-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-2.53, 18.03], [-2.0, 18.25], [-1.75, 18.15], [-1.68, 18.18], [-1.53, 18.53], [-1.0, 18.75], [-0.47, 18.53], [-0.32, 18.18], [0.03, 18.03], [0.18, 17.68], [0.25, 17.65], [0.5, 17.75], [0.75, 17.65], [1.0, 17.75], [1.53, 17.53], [1.75, 17.0], [1.65, 16.75], [1.75, 16.5], [1.53, 15.97], [1.0, 15.75], [0.75, 15.85], [0.5, 15.75], [0.25, 15.85], [0.0, 15.75], [-0.25, 15.85], [-0.5, 15.75], [-0.75, 15.85], [-1.0, 15.75], [-1.53, 15.97], [-1.68, 16.32], [-1.75, 16.35], [-2.0, 16.25], [-2.53, 16.47], [-2.75, 17.0], [-2.65, 17.25], [-2.75, 17.5], [-2.53, 18.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.98185081986594}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.237688510950845}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [30.347591654459677, 27.284919145372214, 27.797314227068853, 30.005774434407613]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [30.347591654459677, 26.887593841552757, 27.330255126953148, 29.270911153157556]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.7977961414347874, -6.443981150157463, -5.812679182844483, -3.495146909169163]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.7977961414347874, -6.98185081986594, -6.253763975833465, -4.344701830358019]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4825470628024964, -3.742591628826663, -3.282042624505928, -1.9365431773326705]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4825470628024964, -4.446668078010807, -3.8388913851845357, -2.458153799790973]}}