{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:38.887913", "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": "2015-Aug-26_to_2015-Aug-28_42.0_1.5"}, "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": 2015080000951}, "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 26 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 28 2015"}, "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": 55583.86504034593}, "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": ["Somalia"]}, "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": 1.5}, "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": 42.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "42.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 41.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 43.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 0.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 4.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-08-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[41.35, 1.75], [41.25, 2.0], [41.47, 2.53], [42.0, 2.75], [42.25, 2.65], [42.32, 2.68], [42.35, 2.75], [42.25, 3.0], [42.35, 3.25], [42.25, 3.5], [42.35, 3.75], [42.25, 4.0], [42.47, 4.53], [42.82, 4.68], [42.97, 5.03], [43.5, 5.25], [44.03, 5.03], [44.25, 4.5], [44.15, 4.25], [44.25, 4.0], [44.15, 3.75], [44.25, 3.5], [44.03, 2.97], [43.68, 2.82], [43.65, 2.75], [43.68, 2.68], [44.03, 2.53], [44.25, 2.0], [44.03, 1.47], [43.68, 1.32], [43.65, 1.25], [43.75, 1.0], [43.53, 0.47], [43.18, 0.32], [43.03, -0.03], [42.5, -0.25], [41.97, -0.03], [41.82, 0.32], [41.47, 0.47], [41.25, 1.0], [41.35, 1.25], [41.25, 1.5], [41.35, 1.75]]]]}, "2015-08-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[41.35, 1.75], [41.25, 2.0], [41.47, 2.53], [42.0, 2.75], [42.25, 2.65], [42.32, 2.68], [42.35, 2.75], [42.25, 3.0], [42.35, 3.25], [42.25, 3.5], [42.35, 3.75], [42.25, 4.0], [42.47, 4.53], [42.82, 4.68], [42.97, 5.03], [43.5, 5.25], [44.03, 5.03], [44.25, 4.5], [44.15, 4.25], [44.25, 4.0], [44.15, 3.75], [44.25, 3.5], [44.03, 2.97], [43.68, 2.82], [43.65, 2.75], [43.68, 2.68], [44.03, 2.53], [44.25, 2.0], [44.03, 1.47], [43.68, 1.32], [43.65, 1.25], [43.75, 1.0], [43.53, 0.47], [43.18, 0.32], [43.03, -0.03], [42.5, -0.25], [41.97, -0.03], [41.82, 0.32], [41.47, 0.47], [41.25, 1.0], [41.35, 1.25], [41.25, 1.5], [41.35, 1.75]]]]}, "2015-08-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[41.35, 1.75], [41.25, 2.0], [41.47, 2.53], [42.0, 2.75], [42.25, 2.65], [42.32, 2.68], [42.35, 2.75], [42.25, 3.0], [42.35, 3.25], [42.25, 3.5], [42.35, 3.75], [42.25, 4.0], [42.47, 4.53], [42.82, 4.68], [42.97, 5.03], [43.5, 5.25], [44.03, 5.03], [44.25, 4.5], [44.15, 4.25], [44.25, 4.0], [44.15, 3.75], [44.25, 3.5], [44.03, 2.97], [43.68, 2.82], [43.65, 2.75], [43.68, 2.68], [44.03, 2.53], [44.25, 2.0], [44.03, 1.47], [43.68, 1.32], [43.65, 1.25], [43.75, 1.0], [43.53, 0.47], [43.18, 0.32], [43.03, -0.03], [42.5, -0.25], [41.97, -0.03], [41.82, 0.32], [41.47, 0.47], [41.25, 1.0], [41.35, 1.25], [41.25, 1.5], [41.35, 1.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.7313414408998824}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6152457638535835}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.525311015040757, 25.542232661811056, 25.393939447770947]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.313065222214732, 23.69937277074945, 24.52832438531351]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.2243076678016647, -1.225586194351564, -1.395843429407522]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.7313414408998824, -1.9769154281515853, -2.4186390861013933]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-3.32399777581243, -1.7512874343398082, -2.016621282972891]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-4.352003024200627, -2.5134992693923275, -3.4299669452113917]}}