{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:20:52.233137", "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": "2019-Nov-26_to_2019-Dec-05_45.0_9.0"}, "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": 2019110000752}, "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": "November 26 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 05 2019"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 10}, "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": 106746.97446911331}, "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", "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": 9.0}, "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": 45.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "45.0\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": 48.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 7.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 11.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-11-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.47, 8.47], [42.25, 9.0], [42.47, 9.53], [43.0, 9.75], [43.53, 9.53], [43.7, 9.13], [43.82, 9.18], [43.97, 9.53], [44.32, 9.68], [44.47, 10.03], [45.0, 10.25], [45.53, 10.03], [45.75, 9.5], [45.65, 9.25], [45.75, 9.0], [45.53, 8.47], [45.18, 8.32], [45.03, 7.97], [44.5, 7.75], [44.25, 7.85], [44.0, 7.75], [43.47, 7.97], [43.3, 8.38], [43.0, 8.25], [42.47, 8.47]]]]}, "2019-11-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.25, 9.0], [42.47, 9.53], [43.0, 9.75], [43.25, 9.65], [43.5, 9.75], [43.75, 9.65], [44.0, 9.75], [44.25, 9.65], [44.32, 9.68], [44.47, 10.03], [45.0, 10.25], [45.53, 10.03], [45.75, 9.5], [45.65, 9.25], [45.75, 9.0], [45.65, 8.75], [45.75, 8.5], [45.53, 7.97], [45.0, 7.75], [44.75, 7.85], [44.5, 7.75], [44.25, 7.85], [44.0, 7.75], [43.75, 7.85], [43.5, 7.75], [42.97, 7.97], [42.82, 8.32], [42.47, 8.47], [42.25, 9.0]]]]}, "2019-11-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.47, 9.53], [43.0, 9.75], [43.25, 9.65], [43.5, 9.75], [43.75, 9.65], [44.0, 9.75], [44.25, 9.65], [44.32, 9.68], [44.47, 10.03], [45.0, 10.25], [45.53, 10.03], [45.68, 9.68], [46.03, 9.53], [46.18, 9.18], [46.53, 9.03], [46.75, 8.5], [46.53, 7.97], [46.0, 7.75], [45.75, 7.85], [45.5, 7.75], [45.25, 7.85], [45.0, 7.75], [44.75, 7.85], [44.5, 7.75], [44.25, 7.85], [44.0, 7.75], [43.75, 7.85], [43.5, 7.75], [42.97, 7.97], [42.82, 8.32], [42.47, 8.47], [42.25, 9.0], [42.47, 9.53]]], [[[46.97, 10.47], [46.75, 11.0], [46.97, 11.53], [47.5, 11.75], [48.03, 11.53], [48.25, 11.0], [48.03, 10.47], [47.5, 10.25], [46.97, 10.47]]]]}, "2019-11-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[41.97, 8.47], [41.75, 9.0], [41.97, 9.53], [42.5, 9.75], [42.75, 9.65], [43.0, 9.75], [43.25, 9.65], [43.32, 9.68], [43.47, 10.03], [43.82, 10.18], [43.97, 10.53], [44.5, 10.75], [44.75, 10.65], [45.0, 10.75], [45.25, 10.65], [45.5, 10.75], [45.75, 10.65], [46.0, 10.75], [46.25, 10.65], [46.5, 10.75], [46.93, 10.57], [46.75, 11.0], [46.97, 11.53], [47.5, 11.75], [47.75, 11.65], [48.0, 11.75], [48.53, 11.53], [48.75, 11.0], [48.53, 10.47], [48.0, 10.25], [47.75, 10.35], [47.5, 10.25], [47.07, 10.43], [47.18, 10.18], [47.53, 10.03], [47.75, 9.5], [47.53, 8.97], [47.0, 8.75], [46.7, 8.88], [46.65, 8.75], [46.75, 8.5], [46.53, 7.97], [46.0, 7.75], [45.75, 7.85], [45.5, 7.75], [45.25, 7.85], [45.0, 7.75], [44.75, 7.85], [44.5, 7.75], [44.25, 7.85], [44.0, 7.75], [43.75, 7.85], [43.5, 7.75], [42.97, 7.97], [42.82, 8.32], [42.75, 8.35], [42.5, 8.25], [41.97, 8.47]]]]}, "2019-11-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.5, 9.75], [42.75, 9.65], [43.0, 9.75], [43.25, 9.65], [43.32, 9.68], [43.35, 9.75], [43.25, 10.0], [43.47, 10.53], [44.0, 10.75], [44.25, 10.65], [44.5, 10.75], [44.75, 10.65], [45.0, 10.75], [45.25, 10.65], [45.5, 10.75], [45.75, 10.65], [46.0, 10.75], [46.25, 10.65], [46.32, 10.68], [46.47, 11.03], [46.82, 11.18], [46.97, 11.53], [47.5, 11.75], [47.75, 11.65], [48.0, 11.75], [48.25, 11.65], [48.5, 11.75], [49.03, 11.53], [49.25, 11.0], [49.03, 10.47], [48.5, 10.25], [48.25, 10.35], [48.0, 10.25], [47.75, 10.35], [47.68, 10.32], [47.54, 10.0], [47.75, 9.5], [47.53, 8.97], [47.0, 8.75], [46.75, 8.85], [46.68, 8.82], [46.65, 8.75], [46.75, 8.5], [46.53, 7.97], [46.0, 7.75], [45.75, 7.85], [45.5, 7.75], [45.25, 7.85], [45.0, 7.75], [44.75, 7.85], [44.5, 7.75], [44.25, 7.85], [44.0, 7.75], [43.75, 7.85], [43.68, 7.82], [43.53, 7.47], [43.0, 7.25], [42.47, 7.47], [42.32, 7.82], [42.25, 7.85], [42.0, 7.75], [41.47, 7.97], [41.25, 8.5], [41.47, 9.03], [41.82, 9.18], [41.97, 9.53], [42.5, 9.75]]]]}, "2019-12-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.5, 9.75], [42.75, 9.65], [43.0, 9.75], [43.25, 9.65], [43.32, 9.68], [43.35, 9.75], [43.25, 10.0], [43.47, 10.53], [44.0, 10.75], [44.25, 10.65], [44.5, 10.75], [44.75, 10.65], [45.0, 10.75], [45.25, 10.65], [45.5, 10.75], [45.75, 10.65], [46.0, 10.75], [46.25, 10.65], [46.32, 10.68], [46.47, 11.03], [46.82, 11.18], [46.97, 11.53], [47.5, 11.75], [47.75, 11.65], [48.0, 11.75], [48.25, 11.65], [48.5, 11.75], [49.03, 11.53], [49.25, 11.0], [49.03, 10.47], [48.5, 10.25], [48.25, 10.35], [48.0, 10.25], [47.75, 10.35], [47.68, 10.32], [47.54, 10.0], [47.75, 9.5], [47.53, 8.97], [47.0, 8.75], [46.75, 8.85], [46.68, 8.82], [46.53, 8.47], [46.18, 8.32], [46.03, 7.97], [45.5, 7.75], [45.25, 7.85], [45.0, 7.75], [44.75, 7.85], [44.5, 7.75], [44.25, 7.85], [44.0, 7.75], [43.75, 7.85], [43.68, 7.82], [43.53, 7.47], [43.0, 7.25], [42.47, 7.47], [42.32, 7.82], [42.25, 7.85], [42.0, 7.75], [41.47, 7.97], [41.25, 8.5], [41.47, 9.03], [41.82, 9.18], [41.97, 9.53], [42.5, 9.75]]]]}, "2019-12-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[41.47, 7.97], [41.25, 8.5], [41.47, 9.03], [42.0, 9.25], [42.25, 9.15], [42.5, 9.25], [42.75, 9.15], [43.0, 9.25], [43.25, 9.15], [43.32, 9.18], [43.35, 9.25], [43.25, 9.5], [43.35, 9.75], [43.25, 10.0], [43.47, 10.53], [44.0, 10.75], [44.25, 10.65], [44.5, 10.75], [44.75, 10.65], [45.0, 10.75], [45.25, 10.65], [45.5, 10.75], [45.75, 10.65], [46.0, 10.75], [46.25, 10.65], [46.32, 10.68], [46.47, 11.03], [46.82, 11.18], [46.97, 11.53], [47.5, 11.75], [47.75, 11.65], [48.0, 11.75], [48.25, 11.65], [48.5, 11.75], [49.03, 11.53], [49.25, 11.0], [49.03, 10.47], [48.5, 10.25], [48.25, 10.35], [48.0, 10.25], [47.75, 10.35], [47.68, 10.32], [47.53, 9.97], [47.18, 9.82], [47.15, 9.75], [47.25, 9.5], [47.03, 8.97], [46.68, 8.82], [46.53, 8.47], [46.18, 8.32], [46.03, 7.97], [45.5, 7.75], [45.25, 7.85], [45.0, 7.75], [44.75, 7.85], [44.5, 7.75], [44.25, 7.85], [44.0, 7.75], [43.75, 7.85], [43.68, 7.82], [43.53, 7.47], [43.0, 7.25], [42.47, 7.47], [42.32, 7.82], [42.25, 7.85], [42.0, 7.75], [41.47, 7.97]]]]}, "2019-12-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.96, 9.5], [43.75, 10.0], [43.97, 10.53], [44.5, 10.75], [45.0, 10.54], [45.5, 10.75], [45.75, 10.65], [46.0, 10.75], [46.25, 10.65], [46.32, 10.68], [46.47, 11.03], [47.0, 11.25], [47.53, 11.03], [47.75, 10.5], [47.53, 9.97], [47.18, 9.82], [47.03, 9.47], [46.68, 9.32], [46.65, 9.25], [46.75, 9.0], [46.53, 8.47], [46.18, 8.32], [46.03, 7.97], [45.5, 7.75], [45.25, 7.85], [45.0, 7.75], [44.75, 7.85], [44.5, 7.75], [43.97, 7.97], [43.75, 8.5], [43.85, 8.75], [43.75, 9.0], [43.96, 9.5]]]]}, "2019-12-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.0, 9.75], [45.53, 9.53], [45.75, 9.0], [45.53, 8.47], [45.0, 8.25], [44.47, 8.47], [44.25, 9.0], [44.47, 9.53], [45.0, 9.75]]]]}, "2019-12-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.0, 9.75], [45.53, 9.53], [45.75, 9.0], [45.53, 8.47], [45.0, 8.25], [44.47, 8.47], [44.25, 9.0], [44.47, 9.53], [45.0, 9.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.12208635086364}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.0912934984906983}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.91234771950525, 19.475559403677494, 19.979681719963082, 19.1959764224477, 19.20111899654796, 18.91428229437753, 19.158817358494673, 19.413094147052504, 20.700714667326054, 20.339036764338005]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.02688762106044, 17.542258639572367, 17.644370937028782, 16.927425763967506, 16.64337830966258, 16.450090983716848, 16.533062206758416, 17.480889522205246, 20.700714667326054, 20.339036764338005]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5817279751126705, -1.796359185470476, -1.7474934342910688, -2.1149757705977303, -2.1690881815824388, -2.352371876869801, -2.135763275097787, -1.9634206351059416, -1.4406898372415071, -1.7790609981887542]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.944199344001106, -2.0775974329450264, -2.0355139946112786, -2.8406491702194216, -2.86455057125022, -2.915631976522775, -3.12208635086364, -2.393483467441797, -1.4406898372415071, -1.7790609981887542]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4929132224294837, -1.655788629885663, -1.6026466825737888, -1.82761932219226, -1.8805016950424203, -2.0667322222173876, -1.9104173272709635, -1.7516906702532418, -1.2917237769175762, -1.5810175145039829]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7212184604232914, -1.9077005445555135, -1.8222583008141375, -2.535069349686356, -2.5731774035281827, -2.5773681343159214, -2.7748648833640384, -2.1433118080366937, -1.2917237769175762, -1.5810175145039829]}}