{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:01.140645", "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": "2012-Dec-18_to_2012-Dec-20_37.5_3.0"}, "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": 2012120000719}, "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": "December 18 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 20 2012"}, "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": 89613.60352115173}, "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": ["Kenya"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-Africa", "S.Eastern-Africa"]}, "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": 3.0}, "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": 37.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "37.5\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": 38.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -1.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 3.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-12-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.25, 1.5], [34.47, 2.03], [35.0, 2.25], [35.25, 2.15], [35.5, 2.25], [35.75, 2.15], [35.82, 2.18], [35.97, 2.53], [36.5, 2.75], [36.75, 2.65], [36.82, 2.68], [36.85, 2.75], [36.82, 2.82], [36.47, 2.97], [36.25, 3.5], [36.47, 4.03], [37.0, 4.25], [37.53, 4.03], [37.68, 3.68], [38.03, 3.53], [38.25, 3.0], [38.15, 2.75], [38.25, 2.5], [38.15, 2.25], [38.25, 2.0], [38.13, 1.7], [38.53, 1.53], [38.75, 1.0], [38.65, 0.75], [38.75, 0.5], [38.53, -0.03], [38.18, -0.18], [38.15, -0.25], [38.25, -0.5], [38.03, -1.03], [37.68, -1.18], [37.53, -1.53], [37.0, -1.75], [36.47, -1.53], [36.3, -1.12], [36.0, -1.25], [35.47, -1.03], [35.25, -0.5], [35.35, -0.25], [35.32, -0.18], [34.97, -0.03], [34.75, 0.5], [34.85, 0.75], [34.82, 0.82], [34.47, 0.97], [34.25, 1.5]]]]}, "2012-12-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.25, 1.5], [34.47, 2.03], [35.0, 2.25], [35.25, 2.15], [35.5, 2.25], [35.75, 2.15], [35.82, 2.18], [35.97, 2.53], [36.5, 2.75], [36.75, 2.65], [36.82, 2.68], [36.85, 2.75], [36.82, 2.82], [36.47, 2.97], [36.25, 3.5], [36.47, 4.03], [37.0, 4.25], [37.53, 4.03], [37.68, 3.68], [38.03, 3.53], [38.25, 3.0], [38.15, 2.75], [38.25, 2.5], [38.15, 2.25], [38.25, 2.0], [38.13, 1.7], [38.53, 1.53], [38.75, 1.0], [38.65, 0.75], [38.75, 0.5], [38.53, -0.03], [38.18, -0.18], [38.15, -0.25], [38.25, -0.5], [38.03, -1.03], [37.68, -1.18], [37.53, -1.53], [37.0, -1.75], [36.47, -1.53], [36.3, -1.12], [36.0, -1.25], [35.47, -1.03], [35.25, -0.5], [35.35, -0.25], [35.32, -0.18], [34.97, -0.03], [34.75, 0.5], [34.85, 0.75], [34.82, 0.82], [34.47, 0.97], [34.25, 1.5]]]]}, "2012-12-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.25, 1.5], [34.47, 2.03], [35.0, 2.25], [35.25, 2.15], [35.5, 2.25], [35.75, 2.15], [35.82, 2.18], [35.97, 2.53], [36.5, 2.75], [36.75, 2.65], [36.82, 2.68], [36.85, 2.75], [36.82, 2.82], [36.47, 2.97], [36.25, 3.5], [36.47, 4.03], [37.0, 4.25], [37.53, 4.03], [37.68, 3.68], [38.03, 3.53], [38.25, 3.0], [38.15, 2.75], [38.25, 2.5], [38.15, 2.25], [38.25, 2.0], [38.13, 1.7], [38.53, 1.53], [38.75, 1.0], [38.65, 0.75], [38.75, 0.5], [38.53, -0.03], [38.18, -0.18], [38.15, -0.25], [38.25, -0.5], [38.03, -1.03], [37.68, -1.18], [37.53, -1.53], [37.0, -1.75], [36.47, -1.53], [36.3, -1.12], [36.0, -1.25], [35.47, -1.03], [35.25, -0.5], [35.35, -0.25], [35.32, -0.18], [34.97, -0.03], [34.75, 0.5], [34.85, 0.75], [34.82, 0.82], [34.47, 0.97], [34.25, 1.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.0261499651020927}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9509094379402396}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.200782696757983, 20.114039587517652, 20.41785123940292]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.496037286849571, 13.307847784961098, 13.01033513145586]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.9992715627046131, -2.0822931586932953, -1.7711635924228106]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.9948546175436945, -3.0261499651020927, -2.707034553026176]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.1893343338015048, -2.305528098289134, -1.9981105010082978]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.9517847413130553, -2.986253822021721, -2.628663190456347]}}