{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:19:08.655971", "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-Mar-13_to_2020-Mar-15_32.5_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": 2020030000383}, "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 13 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 15 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": 65185.04553198145}, "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": ["Sudan"]}, "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": 32.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "32.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 29.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 33.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 15.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 17.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-03-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.47, 17.53], [30.0, 17.75], [30.5, 17.54], [31.0, 17.75], [31.25, 17.65], [31.5, 17.75], [31.8, 17.63], [31.97, 18.03], [32.5, 18.25], [32.75, 18.15], [33.0, 18.25], [33.53, 18.03], [33.68, 17.68], [34.03, 17.53], [34.25, 17.0], [34.15, 16.75], [34.25, 16.5], [34.03, 15.97], [33.68, 15.82], [33.53, 15.47], [33.18, 15.32], [33.03, 14.97], [32.5, 14.75], [32.0, 14.96], [31.5, 14.75], [30.97, 14.97], [30.82, 15.32], [30.47, 15.47], [30.32, 15.82], [30.25, 15.85], [30.0, 15.75], [29.47, 15.97], [29.25, 16.5], [29.35, 16.75], [29.25, 17.0], [29.47, 17.53]]]]}, "2020-03-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.47, 17.53], [30.0, 17.75], [30.5, 17.54], [31.0, 17.75], [31.25, 17.65], [31.5, 17.75], [31.8, 17.63], [31.97, 18.03], [32.5, 18.25], [32.75, 18.15], [33.0, 18.25], [33.53, 18.03], [33.68, 17.68], [34.03, 17.53], [34.25, 17.0], [34.15, 16.75], [34.25, 16.5], [34.03, 15.97], [33.68, 15.82], [33.53, 15.47], [33.18, 15.32], [33.03, 14.97], [32.5, 14.75], [32.0, 14.96], [31.5, 14.75], [30.97, 14.97], [30.82, 15.32], [30.47, 15.47], [30.32, 15.82], [30.25, 15.85], [30.0, 15.75], [29.47, 15.97], [29.25, 16.5], [29.35, 16.75], [29.25, 17.0], [29.47, 17.53]]]]}, "2020-03-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.47, 17.53], [30.0, 17.75], [30.5, 17.54], [31.0, 17.75], [31.25, 17.65], [31.5, 17.75], [31.8, 17.63], [31.97, 18.03], [32.5, 18.25], [32.75, 18.15], [33.0, 18.25], [33.53, 18.03], [33.68, 17.68], [34.03, 17.53], [34.25, 17.0], [34.15, 16.75], [34.25, 16.5], [34.03, 15.97], [33.68, 15.82], [33.53, 15.47], [33.18, 15.32], [33.03, 14.97], [32.5, 14.75], [32.0, 14.96], [31.5, 14.75], [30.97, 14.97], [30.82, 15.32], [30.47, 15.47], [30.32, 15.82], [30.25, 15.85], [30.0, 15.75], [29.47, 15.97], [29.25, 16.5], [29.35, 16.75], [29.25, 17.0], [29.47, 17.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.841351196801554}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.778112806124314}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.415206670955058, 21.22165806727338, 22.456011439860106]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.205167906289432, 19.133406858481237, 20.552763285480353]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.986926044272916, -5.262065794701323, -4.085346579398703]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.841351196801554, -5.7086539114648644, -4.310293695289317]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.557318110627396, -1.6662159004572237, -1.3044354703162535]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7821025168163724, -1.8077987442908827, -1.4231242563810513]}}