{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:38.509260", "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-Feb-23_to_2012-Feb-27_42.0_5.5"}, "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": 2012020001284}, "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 23 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 27 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 58564.37359362795}, "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", "Somalia"]}, "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": 5.5}, "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": 41.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 44.25}, "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": 5.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-02-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.97, 4.97], [40.75, 5.5], [40.97, 6.03], [41.5, 6.25], [41.75, 6.15], [42.0, 6.25], [42.53, 6.03], [42.68, 5.68], [42.75, 5.65], [43.0, 5.75], [43.53, 5.53], [43.68, 5.18], [43.75, 5.15], [44.0, 5.25], [44.53, 5.03], [44.75, 4.5], [44.53, 3.97], [44.18, 3.82], [44.15, 3.75], [44.25, 3.5], [44.03, 2.97], [43.5, 2.75], [43.25, 2.85], [43.0, 2.75], [42.47, 2.97], [42.32, 3.32], [41.97, 3.47], [41.75, 4.0], [41.85, 4.25], [41.75, 4.5], [41.85, 4.75], [41.82, 4.82], [41.75, 4.85], [41.5, 4.75], [40.97, 4.97]]]]}, "2012-02-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.97, 4.53], [41.32, 4.68], [41.38, 4.8], [40.97, 4.97], [40.75, 5.5], [40.97, 6.03], [41.5, 6.25], [41.75, 6.15], [42.0, 6.25], [42.53, 6.03], [42.68, 5.68], [42.75, 5.65], [43.0, 5.75], [43.53, 5.53], [43.68, 5.18], [43.75, 5.15], [44.0, 5.25], [44.53, 5.03], [44.75, 4.5], [44.53, 3.97], [44.18, 3.82], [44.15, 3.75], [44.25, 3.5], [44.03, 2.97], [43.5, 2.75], [43.25, 2.85], [43.0, 2.75], [42.75, 2.85], [42.5, 2.75], [42.25, 2.85], [42.0, 2.75], [41.75, 2.85], [41.5, 2.75], [40.97, 2.97], [40.75, 3.5], [40.85, 3.75], [40.75, 4.0], [40.97, 4.53]]]]}, "2012-02-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.97, 4.53], [41.32, 4.68], [41.38, 4.8], [40.97, 4.97], [40.75, 5.5], [40.97, 6.03], [41.5, 6.25], [41.75, 6.15], [42.0, 6.25], [42.53, 6.03], [42.68, 5.68], [42.75, 5.65], [43.0, 5.75], [43.53, 5.53], [43.68, 5.18], [43.75, 5.15], [44.0, 5.25], [44.53, 5.03], [44.75, 4.5], [44.53, 3.97], [44.18, 3.82], [44.15, 3.75], [44.25, 3.5], [44.03, 2.97], [43.5, 2.75], [43.25, 2.85], [43.0, 2.75], [42.75, 2.85], [42.5, 2.75], [42.25, 2.85], [42.0, 2.75], [41.75, 2.85], [41.5, 2.75], [40.97, 2.97], [40.75, 3.5], [40.85, 3.75], [40.75, 4.0], [40.97, 4.53]]]]}, "2012-02-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.97, 4.53], [41.32, 4.68], [41.46, 5.0], [41.25, 5.5], [41.47, 6.03], [42.0, 6.25], [42.53, 6.03], [42.75, 5.5], [42.54, 5.0], [42.75, 4.5], [42.65, 4.25], [42.68, 4.18], [43.03, 4.03], [43.25, 3.5], [43.03, 2.97], [42.5, 2.75], [42.25, 2.85], [42.0, 2.75], [41.75, 2.85], [41.5, 2.75], [40.97, 2.97], [40.75, 3.5], [40.85, 3.75], [40.75, 4.0], [40.97, 4.53]]]]}, "2012-02-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.0, 4.25], [42.53, 4.03], [42.75, 3.5], [42.53, 2.97], [42.0, 2.75], [41.47, 2.97], [41.25, 3.5], [41.47, 4.03], [42.0, 4.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.565385229244839}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5063784578441604}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.74223679244517, 28.66577707177271, 28.87359869629546, 29.84695013917883, 29.216895289899355]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.831590953415173, 25.60152748013644, 25.77516153252219, 28.585833948198513, 29.216895289899355]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3427224649391292, -1.7349964479184725, -1.545682257095794, -1.1222803034083069, -1.2320794494675624]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.5376970994917087, -2.565385229244839, -2.215688371882436, -1.3061820096805832, -1.2320794494675624]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5480678976702198, -2.056013805508622, -1.849395656313412, -1.2927842972416566, -1.3947214846063527]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8801552967508481, -2.7594471480946456, -2.3596719818278293, -1.4224959159719037, -1.3947214846063527]}}