{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:31:59.252007", "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": "2022-Aug-12_to_2022-Aug-15_37.0_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": 2022080000545}, "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 12 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 15 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 52320.52217271514}, "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", "South Sudan"]}, "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": 37.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "37.0\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": 37.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 3.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 6.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-08-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.35, 4.25], [35.25, 4.5], [35.35, 4.75], [35.25, 5.0], [35.35, 5.25], [35.25, 5.5], [35.35, 5.75], [35.25, 6.0], [35.35, 6.25], [35.25, 6.5], [35.47, 7.03], [36.0, 7.25], [36.25, 7.15], [36.5, 7.25], [36.75, 7.15], [37.0, 7.25], [37.53, 7.03], [37.75, 6.5], [37.65, 6.25], [37.75, 6.0], [37.65, 5.75], [37.75, 5.5], [37.65, 5.25], [37.75, 5.0], [37.65, 4.75], [37.75, 4.5], [37.53, 3.97], [37.0, 3.75], [36.75, 3.85], [36.68, 3.82], [36.65, 3.75], [36.75, 3.5], [36.53, 2.97], [36.0, 2.75], [35.47, 2.97], [35.25, 3.5], [35.35, 3.75], [35.25, 4.0], [35.35, 4.25]]]]}, "2022-08-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.75, 5.0], [34.97, 5.53], [35.32, 5.68], [35.35, 5.75], [35.25, 6.0], [35.35, 6.25], [35.25, 6.5], [35.47, 7.03], [36.0, 7.25], [36.25, 7.15], [36.5, 7.25], [36.75, 7.15], [37.0, 7.25], [37.53, 7.03], [37.75, 6.5], [37.65, 6.25], [37.75, 6.0], [37.65, 5.75], [37.75, 5.5], [37.65, 5.25], [37.75, 5.0], [37.65, 4.75], [37.75, 4.5], [37.53, 3.97], [37.0, 3.75], [36.75, 3.85], [36.68, 3.82], [36.65, 3.75], [36.75, 3.5], [36.53, 2.97], [36.0, 2.75], [35.47, 2.97], [35.25, 3.5], [35.35, 3.75], [35.25, 4.0], [35.35, 4.25], [35.32, 4.32], [34.97, 4.47], [34.75, 5.0]]]]}, "2022-08-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.75, 5.0], [34.97, 5.53], [35.32, 5.68], [35.35, 5.75], [35.25, 6.0], [35.35, 6.25], [35.25, 6.5], [35.47, 7.03], [36.0, 7.25], [36.25, 7.15], [36.5, 7.25], [36.75, 7.15], [37.0, 7.25], [37.53, 7.03], [37.75, 6.5], [37.65, 6.25], [37.75, 6.0], [37.65, 5.75], [37.75, 5.5], [37.65, 5.25], [37.75, 5.0], [37.65, 4.75], [37.75, 4.5], [37.53, 3.97], [37.0, 3.75], [36.75, 3.85], [36.68, 3.82], [36.65, 3.75], [36.75, 3.5], [36.53, 2.97], [36.0, 2.75], [35.47, 2.97], [35.25, 3.5], [35.35, 3.75], [35.25, 4.0], [35.35, 4.25], [35.32, 4.32], [34.97, 4.47], [34.75, 5.0]]]]}, "2022-08-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.97, 4.47], [34.75, 5.0], [34.97, 5.53], [35.5, 5.75], [36.0, 5.54], [36.5, 5.75], [36.75, 5.65], [37.0, 5.75], [37.53, 5.53], [37.75, 5.0], [37.65, 4.75], [37.75, 4.5], [37.53, 3.97], [37.0, 3.75], [36.75, 3.85], [36.5, 3.75], [35.97, 3.97], [35.8, 4.38], [35.5, 4.25], [34.97, 4.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.133909177123201}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.3356271576956478}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.536732884388982, 23.303866111154605, 24.172793767809537, 25.34849490268647]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.380548368855102, 17.527457521277995, 18.37862830921182, 24.101658258878615]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.4049927929510524, -2.822792392336968, -1.991078514577633, -1.6287607136991142]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.629072460512589, -4.133909177123201, -3.03289798666799, -1.9347920419897946]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.1008794994027817, -2.4508902540270383, -1.7240270091294208, -1.5622370149984053]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.074523592374887, -3.5079396312859465, -2.061537331571782, -1.6841784343514246]}}