{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:14.549500", "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": "2013-Jan-09_to_2013-Jan-11_34.0_10.0"}, "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": 2013010000361}, "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 09 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 11 2013"}, "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": 51509.14356064137}, "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": ["South Sudan", "Sudan"]}, "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": 10.0}, "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": 34.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "34.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 32.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 34.75}, "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": 13.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-01-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.35, 11.25], [32.25, 11.5], [32.35, 11.75], [32.25, 12.0], [32.35, 12.25], [32.25, 12.5], [32.35, 12.75], [32.25, 13.0], [32.47, 13.53], [33.0, 13.75], [33.53, 13.53], [33.68, 13.18], [34.03, 13.03], [34.18, 12.68], [34.53, 12.53], [34.75, 12.0], [34.65, 11.75], [34.68, 11.68], [35.03, 11.53], [35.25, 11.0], [35.03, 10.47], [34.63, 10.3], [34.75, 10.0], [34.53, 9.47], [34.0, 9.25], [33.75, 9.35], [33.5, 9.25], [32.97, 9.47], [32.82, 9.82], [32.47, 9.97], [32.25, 10.5], [32.35, 10.75], [32.25, 11.0], [32.35, 11.25]]]]}, "2013-01-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.35, 11.25], [32.25, 11.5], [32.35, 11.75], [32.25, 12.0], [32.35, 12.25], [32.25, 12.5], [32.35, 12.75], [32.25, 13.0], [32.47, 13.53], [33.0, 13.75], [33.53, 13.53], [33.68, 13.18], [34.03, 13.03], [34.18, 12.68], [34.53, 12.53], [34.75, 12.0], [34.65, 11.75], [34.68, 11.68], [35.03, 11.53], [35.25, 11.0], [35.03, 10.47], [34.63, 10.3], [34.75, 10.0], [34.53, 9.47], [34.0, 9.25], [33.75, 9.35], [33.5, 9.25], [32.97, 9.47], [32.82, 9.82], [32.47, 9.97], [32.25, 10.5], [32.35, 10.75], [32.25, 11.0], [32.35, 11.25]]]]}, "2013-01-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.35, 11.25], [32.25, 11.5], [32.35, 11.75], [32.25, 12.0], [32.35, 12.25], [32.25, 12.5], [32.35, 12.75], [32.25, 13.0], [32.47, 13.53], [33.0, 13.75], [33.53, 13.53], [33.68, 13.18], [34.03, 13.03], [34.18, 12.68], [34.53, 12.53], [34.75, 12.0], [34.65, 11.75], [34.68, 11.68], [35.03, 11.53], [35.25, 11.0], [35.03, 10.47], [34.63, 10.3], [34.75, 10.0], [34.53, 9.47], [34.0, 9.25], [33.75, 9.35], [33.5, 9.25], [32.97, 9.47], [32.82, 9.82], [32.47, 9.97], [32.25, 10.5], [32.35, 10.75], [32.25, 11.0], [32.35, 11.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.351156608139206}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.850756247430041}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.648669374918654, 22.516002969632382, 22.299712281725533]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.92639108274551, 20.851539511065994, 20.754643584469534]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.7419690167867277, -3.796585954884165, -4.01371377061923]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.189240581886111, -4.351156608139206, -4.350772834927511]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5022961284443248, -1.452480587196803, -1.4952859025839391]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6777328665804254, -1.5673524098321572, -1.6711726770767392]}}