{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:21:00.952622", "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": "2020-Aug-08_to_2020-Aug-10_2.5_26.5"}, "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": 2020080000348}, "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": "August 08 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 10 2020"}, "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": 71362.89701634929}, "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": ["Algeria"]}, "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": 26.5}, "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": 2.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "2.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 2.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 5.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 25.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 29.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-08-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[1.85, 26.25], [1.75, 26.5], [1.97, 27.03], [2.32, 27.18], [2.46, 27.5], [2.25, 28.0], [2.47, 28.53], [3.0, 28.75], [3.25, 28.65], [3.32, 28.68], [3.47, 29.03], [3.82, 29.18], [3.97, 29.53], [4.5, 29.75], [4.75, 29.65], [5.0, 29.75], [5.25, 29.65], [5.5, 29.75], [6.03, 29.53], [6.25, 29.0], [6.03, 28.47], [5.68, 28.32], [5.65, 28.25], [5.75, 28.0], [5.53, 27.47], [5.18, 27.32], [5.15, 27.25], [5.25, 27.0], [5.15, 26.75], [5.25, 26.5], [5.03, 25.97], [4.5, 25.75], [4.25, 25.85], [4.18, 25.82], [4.03, 25.47], [3.5, 25.25], [3.25, 25.35], [3.18, 25.32], [3.03, 24.97], [2.5, 24.75], [1.97, 24.97], [1.75, 25.5], [1.85, 25.75], [1.75, 26.0], [1.85, 26.25]]]]}, "2020-08-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[1.85, 26.25], [1.75, 26.5], [1.97, 27.03], [2.32, 27.18], [2.46, 27.5], [2.25, 28.0], [2.47, 28.53], [3.0, 28.75], [3.25, 28.65], [3.32, 28.68], [3.47, 29.03], [3.82, 29.18], [3.97, 29.53], [4.5, 29.75], [4.75, 29.65], [5.0, 29.75], [5.25, 29.65], [5.5, 29.75], [6.03, 29.53], [6.25, 29.0], [6.03, 28.47], [5.68, 28.32], [5.65, 28.25], [5.75, 28.0], [5.53, 27.47], [5.18, 27.32], [5.15, 27.25], [5.25, 27.0], [5.15, 26.75], [5.25, 26.5], [5.03, 25.97], [4.5, 25.75], [4.25, 25.85], [4.18, 25.82], [4.03, 25.47], [3.5, 25.25], [3.25, 25.35], [3.18, 25.32], [3.03, 24.97], [2.5, 24.75], [1.97, 24.97], [1.75, 25.5], [1.85, 25.75], [1.75, 26.0], [1.85, 26.25]]]]}, "2020-08-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[1.85, 26.25], [1.75, 26.5], [1.97, 27.03], [2.32, 27.18], [2.46, 27.5], [2.25, 28.0], [2.47, 28.53], [3.0, 28.75], [3.25, 28.65], [3.32, 28.68], [3.47, 29.03], [3.82, 29.18], [3.97, 29.53], [4.5, 29.75], [4.75, 29.65], [5.0, 29.75], [5.25, 29.65], [5.5, 29.75], [6.03, 29.53], [6.25, 29.0], [6.03, 28.47], [5.68, 28.32], [5.65, 28.25], [5.75, 28.0], [5.53, 27.47], [5.18, 27.32], [5.15, 27.25], [5.25, 27.0], [5.15, 26.75], [5.25, 26.5], [5.03, 25.97], [4.5, 25.75], [4.25, 25.85], [4.18, 25.82], [4.03, 25.47], [3.5, 25.25], [3.25, 25.35], [3.18, 25.32], [3.03, 24.97], [2.5, 24.75], [1.97, 24.97], [1.75, 25.5], [1.85, 25.75], [1.75, 26.0], [1.85, 26.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.3235059996001155}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.601808698604909}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [34.406338099754294, 33.78219926890944, 34.07704467883474]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [32.44751007940971, 31.802507471259617, 31.957400867592014]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.2859976782598106, -2.8989642397845965, -2.6204641777703204]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.6370444192528453, -3.3036250212159644, -3.3235059996001155]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3266417620647413, -1.7051691297441562, -1.5578461222654465]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4846604108077972, -2.0405745292752955, -1.9876748349038926]}}