{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:18:46.774453", "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-Feb-10_to_2020-Feb-12_36.0_20.0"}, "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": 2020020000403}, "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": "February 10 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 12 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": 54733.07748907185}, "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": 20.0}, "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": 36.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "36.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 34.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 36.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 19.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 23.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-02-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.75, 20.5], [34.96, 21.0], [34.75, 21.5], [34.85, 21.75], [34.82, 21.82], [34.47, 21.97], [34.25, 22.5], [34.47, 23.03], [34.82, 23.18], [34.97, 23.53], [35.5, 23.75], [36.03, 23.53], [36.18, 23.18], [36.53, 23.03], [36.68, 22.68], [37.03, 22.53], [37.25, 22.0], [37.15, 21.75], [37.25, 21.5], [37.15, 21.25], [37.25, 21.0], [37.15, 20.75], [37.25, 20.5], [37.03, 19.97], [36.68, 19.82], [36.65, 19.75], [36.75, 19.5], [36.53, 18.97], [36.0, 18.75], [35.5, 18.96], [35.0, 18.75], [34.47, 18.97], [34.25, 19.5], [34.47, 20.03], [34.82, 20.18], [34.85, 20.25], [34.75, 20.5]]]]}, "2020-02-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.75, 20.5], [34.96, 21.0], [34.75, 21.5], [34.85, 21.75], [34.82, 21.82], [34.47, 21.97], [34.25, 22.5], [34.47, 23.03], [34.82, 23.18], [34.97, 23.53], [35.5, 23.75], [36.03, 23.53], [36.18, 23.18], [36.53, 23.03], [36.68, 22.68], [37.03, 22.53], [37.25, 22.0], [37.15, 21.75], [37.25, 21.5], [37.15, 21.25], [37.25, 21.0], [37.15, 20.75], [37.25, 20.5], [37.03, 19.97], [36.68, 19.82], [36.65, 19.75], [36.75, 19.5], [36.53, 18.97], [36.0, 18.75], [35.5, 18.96], [35.0, 18.75], [34.47, 18.97], [34.25, 19.5], [34.47, 20.03], [34.82, 20.18], [34.85, 20.25], [34.75, 20.5]]]]}, "2020-02-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.75, 20.5], [34.96, 21.0], [34.75, 21.5], [34.85, 21.75], [34.82, 21.82], [34.47, 21.97], [34.25, 22.5], [34.47, 23.03], [34.82, 23.18], [34.97, 23.53], [35.5, 23.75], [36.03, 23.53], [36.18, 23.18], [36.53, 23.03], [36.68, 22.68], [37.03, 22.53], [37.25, 22.0], [37.15, 21.75], [37.25, 21.5], [37.15, 21.25], [37.25, 21.0], [37.15, 20.75], [37.25, 20.5], [37.03, 19.97], [36.68, 19.82], [36.65, 19.75], [36.75, 19.5], [36.53, 18.97], [36.0, 18.75], [35.5, 18.96], [35.0, 18.75], [34.47, 18.97], [34.25, 19.5], [34.47, 20.03], [34.82, 20.18], [34.85, 20.25], [34.75, 20.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.951504372580132}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.377109058250376}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.65226100281609, 14.984878485323804, 15.8648816105445]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.854952335100108, 12.20296927257624, 12.805359716926091]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.171514802596616, -4.878937519996061, -4.080874852158451]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.9046236225455, -5.951504372580132, -4.808682933177693]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4461059696009024, -1.6878881023808225, -1.4246168501004295]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6285707610939155, -1.913496320442083, -1.6655397219046808]}}