{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:20:49.106746", "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-04_to_2019-Nov-07_48.0_7.5"}, "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": 2019110000135}, "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 04 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 07 2019"}, "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": 70493.51072743301}, "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": 7.5}, "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": 48.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "48.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 45.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 49.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 6.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 8.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-11-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.35, 7.25], [45.25, 7.5], [45.47, 8.03], [45.82, 8.18], [45.97, 8.53], [46.5, 8.75], [46.75, 8.65], [46.82, 8.68], [46.97, 9.03], [47.5, 9.25], [47.75, 9.15], [48.0, 9.25], [48.53, 9.03], [48.68, 8.68], [49.03, 8.53], [49.18, 8.18], [49.53, 8.03], [49.75, 7.5], [49.53, 6.97], [49.18, 6.82], [49.03, 6.47], [48.5, 6.25], [48.25, 6.35], [48.0, 6.25], [47.75, 6.35], [47.5, 6.25], [47.25, 6.35], [47.18, 6.32], [47.03, 5.97], [46.5, 5.75], [46.25, 5.85], [46.0, 5.75], [45.47, 5.97], [45.25, 6.5], [45.35, 6.75], [45.25, 7.0], [45.35, 7.25]]]]}, "2019-11-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.25, 7.5], [45.47, 8.03], [45.82, 8.18], [45.97, 8.53], [46.5, 8.75], [46.75, 8.65], [46.82, 8.68], [46.97, 9.03], [47.5, 9.25], [47.75, 9.15], [48.0, 9.25], [48.53, 9.03], [48.68, 8.68], [49.03, 8.53], [49.18, 8.18], [49.53, 8.03], [49.75, 7.5], [49.53, 6.97], [49.18, 6.82], [49.03, 6.47], [48.5, 6.25], [48.25, 6.35], [48.0, 6.25], [47.75, 6.35], [47.5, 6.25], [47.25, 6.35], [47.18, 6.32], [47.03, 5.97], [46.5, 5.75], [46.25, 5.85], [46.0, 5.75], [45.75, 5.85], [45.5, 5.75], [44.97, 5.97], [44.75, 6.5], [44.97, 7.03], [45.32, 7.18], [45.35, 7.25], [45.25, 7.5]]]]}, "2019-11-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.25, 7.5], [45.47, 8.03], [45.82, 8.18], [45.97, 8.53], [46.5, 8.75], [46.75, 8.65], [46.82, 8.68], [46.97, 9.03], [47.5, 9.25], [47.75, 9.15], [48.0, 9.25], [48.53, 9.03], [48.68, 8.68], [49.03, 8.53], [49.18, 8.18], [49.53, 8.03], [49.75, 7.5], [49.53, 6.97], [49.18, 6.82], [49.03, 6.47], [48.5, 6.25], [48.25, 6.35], [48.0, 6.25], [47.75, 6.35], [47.5, 6.25], [47.25, 6.35], [47.18, 6.32], [47.03, 5.97], [46.5, 5.75], [46.25, 5.85], [46.0, 5.75], [45.75, 5.85], [45.5, 5.75], [44.97, 5.97], [44.75, 6.5], [44.97, 7.03], [45.32, 7.18], [45.35, 7.25], [45.25, 7.5]]]]}, "2019-11-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.75, 6.5], [44.97, 7.03], [45.5, 7.25], [45.75, 7.15], [46.0, 7.25], [46.53, 7.03], [46.75, 6.5], [46.53, 5.97], [46.0, 5.75], [45.75, 5.85], [45.5, 5.75], [44.97, 5.97], [44.75, 6.5]]], [[[46.97, 7.97], [46.75, 8.5], [46.97, 9.03], [47.5, 9.25], [48.03, 9.03], [48.25, 8.5], [48.03, 7.97], [47.5, 7.75], [46.97, 7.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.309958012357754}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.1260703772555263}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.09625722379394, 23.309902678627907, 23.445983383925693, 23.722719747930398]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.92051390103228, 22.134581410189924, 22.07888956636583, 23.177803314800315]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.331276332015436, -2.1359128770966707, -1.9817736203633658, -1.6520426797406458]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.309958012357754, -2.686704488205635, -2.5748269704793643, -1.7992984549833295]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.0066397533241447, -1.856990584072538, -1.790749569579059, -1.4206892283370267]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.956260873734899, -2.1434028295363867, -2.1511931657503665, -1.5455520780051006]}}