{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:55:33.361464", "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": "2014-Jan-23_to_2014-Jan-25_42.5_12.0"}, "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": 2014010000994}, "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": "January 23 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 25 2014"}, "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": 66711.9136954745}, "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": ["Djibouti", "Ethiopia"]}, "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": 12.0}, "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": 42.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "42.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 40.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 42.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 9.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 12.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-01-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.85, 10.75], [39.75, 11.0], [39.97, 11.53], [40.32, 11.68], [40.35, 11.75], [40.25, 12.0], [40.47, 12.53], [41.0, 12.75], [41.25, 12.65], [41.32, 12.68], [41.47, 13.03], [42.0, 13.25], [42.25, 13.15], [42.5, 13.25], [43.03, 13.03], [43.25, 12.5], [43.15, 12.25], [43.25, 12.0], [43.15, 11.75], [43.25, 11.5], [43.04, 11.0], [43.25, 10.5], [43.03, 9.97], [42.5, 9.75], [42.25, 9.85], [42.18, 9.82], [42.03, 9.47], [41.5, 9.25], [41.25, 9.35], [41.0, 9.25], [40.75, 9.35], [40.5, 9.25], [39.97, 9.47], [39.75, 10.0], [39.85, 10.25], [39.75, 10.5], [39.85, 10.75]]]]}, "2014-01-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.85, 10.75], [39.75, 11.0], [39.97, 11.53], [40.32, 11.68], [40.35, 11.75], [40.25, 12.0], [40.47, 12.53], [41.0, 12.75], [41.25, 12.65], [41.32, 12.68], [41.47, 13.03], [42.0, 13.25], [42.25, 13.15], [42.5, 13.25], [43.03, 13.03], [43.25, 12.5], [43.15, 12.25], [43.25, 12.0], [43.15, 11.75], [43.25, 11.5], [43.04, 11.0], [43.25, 10.5], [43.03, 9.97], [42.5, 9.75], [42.25, 9.85], [42.18, 9.82], [42.03, 9.47], [41.5, 9.25], [41.25, 9.35], [41.0, 9.25], [40.75, 9.35], [40.5, 9.25], [39.97, 9.47], [39.75, 10.0], [39.85, 10.25], [39.75, 10.5], [39.85, 10.75]]]]}, "2014-01-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.85, 10.75], [39.75, 11.0], [39.97, 11.53], [40.32, 11.68], [40.35, 11.75], [40.25, 12.0], [40.47, 12.53], [41.0, 12.75], [41.25, 12.65], [41.32, 12.68], [41.47, 13.03], [42.0, 13.25], [42.25, 13.15], [42.5, 13.25], [43.03, 13.03], [43.25, 12.5], [43.15, 12.25], [43.25, 12.0], [43.15, 11.75], [43.25, 11.5], [43.04, 11.0], [43.25, 10.5], [43.03, 9.97], [42.5, 9.75], [42.25, 9.85], [42.18, 9.82], [42.03, 9.47], [41.5, 9.25], [41.25, 9.35], [41.0, 9.25], [40.75, 9.35], [40.5, 9.25], [39.97, 9.47], [39.75, 10.0], [39.85, 10.25], [39.75, 10.5], [39.85, 10.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.0177978478508294}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.240581576412992}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.372890165710885, 22.03643474710367, 22.53565906497232]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.8716765067947, 18.76393139509571, 19.493449758527618]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.1851323259707502, -2.5250890203317367, -2.0115233829364896]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.8025640818064517, -3.0177978478508294, -2.4547393149650816]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6969021014499939, -1.8629517245915979, -1.4544215868650638]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.139593898706387, -2.111832016736456, -1.827648568634645]}}