{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:12:54.688545", "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": "2018-Jun-13_to_2018-Jun-16_38.5_11.5"}, "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": 2018060000493}, "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": "June 13 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 16 2018"}, "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": 57651.8433995442}, "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"]}, "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": 11.5}, "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": 38.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "38.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 37.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 39.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 9.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 12.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-06-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.97, 12.03], [37.32, 12.18], [37.47, 12.53], [38.0, 12.75], [38.25, 12.65], [38.5, 12.75], [38.75, 12.65], [39.0, 12.75], [39.53, 12.53], [39.68, 12.18], [40.03, 12.03], [40.25, 11.5], [40.15, 11.25], [40.25, 11.0], [40.15, 10.75], [40.25, 10.5], [40.15, 10.25], [40.25, 10.0], [40.15, 9.75], [40.25, 9.5], [40.03, 8.97], [39.5, 8.75], [38.97, 8.97], [38.82, 9.32], [38.75, 9.35], [38.5, 9.25], [37.97, 9.47], [37.75, 10.0], [37.85, 10.25], [37.8, 10.38], [37.5, 10.25], [36.97, 10.47], [36.75, 11.0], [36.85, 11.25], [36.75, 11.5], [36.97, 12.03]]]]}, "2018-06-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.97, 12.03], [37.32, 12.18], [37.47, 12.53], [38.0, 12.75], [38.25, 12.65], [38.5, 12.75], [38.75, 12.65], [39.0, 12.75], [39.53, 12.53], [39.68, 12.18], [40.03, 12.03], [40.25, 11.5], [40.15, 11.25], [40.25, 11.0], [40.15, 10.75], [40.25, 10.5], [40.15, 10.25], [40.25, 10.0], [40.15, 9.75], [40.25, 9.5], [40.03, 8.97], [39.5, 8.75], [38.97, 8.97], [38.82, 9.32], [38.75, 9.35], [38.5, 9.25], [37.97, 9.47], [37.75, 10.0], [37.85, 10.25], [37.8, 10.38], [37.5, 10.25], [36.97, 10.47], [36.75, 11.0], [36.85, 11.25], [36.75, 11.5], [36.97, 12.03]]]]}, "2018-06-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.97, 12.03], [37.32, 12.18], [37.47, 12.53], [38.0, 12.75], [38.25, 12.65], [38.5, 12.75], [38.75, 12.65], [39.0, 12.75], [39.53, 12.53], [39.68, 12.18], [40.03, 12.03], [40.25, 11.5], [40.15, 11.25], [40.25, 11.0], [40.15, 10.75], [40.25, 10.5], [40.15, 10.25], [40.25, 10.0], [40.15, 9.75], [40.25, 9.5], [40.03, 8.97], [39.5, 8.75], [38.97, 8.97], [38.82, 9.32], [38.75, 9.35], [38.5, 9.25], [37.97, 9.47], [37.75, 10.0], [37.85, 10.25], [37.8, 10.38], [37.5, 10.25], [36.97, 10.47], [36.75, 11.0], [36.85, 11.25], [36.75, 11.5], [36.97, 12.03]]]]}, "2018-06-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.5, 12.25], [39.03, 12.03], [39.25, 11.5], [39.03, 10.97], [38.5, 10.75], [37.97, 10.97], [37.75, 11.5], [37.97, 12.03], [38.5, 12.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.499348518094507}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.355117837084255}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.780912920882486, 16.81711244273822, 16.987537801167832, 17.52283443522748]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.74876103075809, 12.985449563339671, 13.414918261591708, 17.52283443522748]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.505975534374425, -2.405565252416735, -2.180331877496261, -1.851253929425809]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.2663561313916603, -3.499348518094507, -3.4647264047416684, -1.851253929425809]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8608363570006972, -1.8059504568350835, -1.6527556638672531, -1.4168053277907373]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2916702347199367, -2.0810346200189924, -2.066420995145963, -1.4168053277907373]}}