{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:06.410917", "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": "2011-Aug-07_to_2011-Aug-12_36.5_5.0"}, "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": 2011080000432}, "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 07 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 12 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 83003.8166355477}, "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": ["Ethiopia", "Kenya"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.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": 5.0}, "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": 36.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "36.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 35.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 38.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 3.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 7.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-08-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.97, 7.03], [35.32, 7.18], [35.47, 7.53], [36.0, 7.75], [36.25, 7.65], [36.5, 7.75], [36.75, 7.65], [37.0, 7.75], [37.25, 7.65], [37.5, 7.75], [37.75, 7.65], [38.0, 7.75], [38.53, 7.53], [38.68, 7.18], [39.03, 7.03], [39.25, 6.5], [39.03, 5.97], [38.5, 5.75], [38.25, 5.85], [38.18, 5.82], [38.15, 5.75], [38.25, 5.5], [38.15, 5.25], [38.25, 5.0], [38.03, 4.47], [37.5, 4.25], [37.25, 4.35], [37.0, 4.25], [36.75, 4.35], [36.5, 4.25], [35.97, 4.47], [35.75, 5.0], [35.85, 5.25], [35.82, 5.32], [35.75, 5.35], [35.5, 5.25], [34.97, 5.47], [34.75, 6.0], [34.85, 6.25], [34.75, 6.5], [34.97, 7.03]]]]}, "2011-08-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.97, 7.03], [35.32, 7.18], [35.47, 7.53], [36.0, 7.75], [36.25, 7.65], [36.5, 7.75], [36.75, 7.65], [37.0, 7.75], [37.25, 7.65], [37.5, 7.75], [37.75, 7.65], [38.0, 7.75], [38.53, 7.53], [38.68, 7.18], [39.03, 7.03], [39.25, 6.5], [39.03, 5.97], [38.5, 5.75], [38.25, 5.85], [38.18, 5.82], [38.15, 5.75], [38.25, 5.5], [38.15, 5.25], [38.25, 5.0], [38.03, 4.47], [37.5, 4.25], [37.25, 4.35], [37.0, 4.25], [36.75, 4.35], [36.5, 4.25], [35.97, 4.47], [35.75, 5.0], [35.85, 5.25], [35.82, 5.32], [35.75, 5.35], [35.5, 5.25], [34.97, 5.47], [34.75, 6.0], [34.85, 6.25], [34.75, 6.5], [34.97, 7.03]]]]}, "2011-08-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.97, 7.03], [35.32, 7.18], [35.47, 7.53], [36.0, 7.75], [36.25, 7.65], [36.5, 7.75], [36.75, 7.65], [37.0, 7.75], [37.25, 7.65], [37.5, 7.75], [37.75, 7.65], [38.0, 7.75], [38.53, 7.53], [38.68, 7.18], [39.03, 7.03], [39.25, 6.5], [39.03, 5.97], [38.5, 5.75], [38.25, 5.85], [38.18, 5.82], [38.15, 5.75], [38.25, 5.5], [38.15, 5.25], [38.25, 5.0], [38.03, 4.47], [37.5, 4.25], [37.25, 4.35], [37.18, 4.32], [37.15, 4.25], [37.25, 4.0], [37.03, 3.47], [36.5, 3.25], [35.97, 3.47], [35.82, 3.82], [35.47, 3.97], [35.25, 4.5], [35.35, 4.75], [35.25, 5.0], [35.38, 5.3], [34.97, 5.47], [34.75, 6.0], [34.85, 6.25], [34.75, 6.5], [34.97, 7.03]]]]}, "2011-08-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.47, 5.53], [36.0, 5.75], [36.25, 5.65], [36.5, 5.75], [37.03, 5.53], [37.25, 5.0], [37.15, 4.75], [37.25, 4.5], [37.15, 4.25], [37.25, 4.0], [37.03, 3.47], [36.5, 3.25], [35.97, 3.47], [35.82, 3.82], [35.47, 3.97], [35.25, 4.5], [35.35, 4.75], [35.25, 5.0], [35.47, 5.53]]]]}, "2011-08-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.47, 5.53], [36.0, 5.75], [36.25, 5.65], [36.5, 5.75], [37.03, 5.53], [37.25, 5.0], [37.15, 4.75], [37.25, 4.5], [37.15, 4.25], [37.25, 4.0], [37.03, 3.47], [36.5, 3.25], [35.97, 3.47], [35.82, 3.82], [35.47, 3.97], [35.25, 4.5], [35.35, 4.75], [35.25, 5.0], [35.47, 5.53]]]]}, "2011-08-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.47, 5.53], [36.0, 5.75], [36.25, 5.65], [36.5, 5.75], [37.03, 5.53], [37.25, 5.0], [37.15, 4.75], [37.25, 4.5], [37.15, 4.25], [37.25, 4.0], [37.03, 3.47], [36.5, 3.25], [35.97, 3.47], [35.82, 3.82], [35.47, 3.97], [35.25, 4.5], [35.35, 4.75], [35.25, 5.0], [35.47, 5.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.821267267111637}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.370283268740893}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.76581094457771, 19.40392838198892, 20.134711780037208, 26.59200297812663, 26.438061077670625, 26.655729710909952]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.705883534194356, 12.423780093363064, 12.62888039874781, 23.95389325959752, 23.02856822549569, 23.074673551107765]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.723380007336338, -2.1142714785149224, -2.520679194006778, -1.8752045168626865, -2.0676796579616963, -1.9092368724629296]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.821267267111637, -3.1815697969078656, -4.80539189037313, -2.203749319080657, -2.8353201063098936, -2.8126900160511354]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.2617134693197953, -1.7681685558383438, -2.0917714790023783, -1.7581226935016545, -1.8813655209118025, -1.7440698470960825]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.000961746167845, -2.408108085202777, -3.917995169334918, -2.326997002748903, -2.2675060751660334, -2.384664924307495]}}