{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:08.565296", "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": "2011-Apr-06_to_2011-Apr-08_33.0_13.0"}, "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": 2011040000387}, "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": "April 06 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 08 2011"}, "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": 72358.20777865317}, "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": 13.0}, "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": 33.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "33.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 30.75}, "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": 11.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 14.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-04-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.5, 13.75], [31.75, 13.65], [32.0, 13.75], [32.25, 13.65], [32.32, 13.68], [32.35, 13.75], [32.25, 14.0], [32.47, 14.53], [33.0, 14.75], [33.53, 14.53], [33.68, 14.18], [33.75, 14.15], [34.0, 14.25], [34.25, 14.15], [34.5, 14.25], [35.03, 14.03], [35.25, 13.5], [35.15, 13.25], [35.25, 13.0], [35.03, 12.47], [34.68, 12.32], [34.53, 11.97], [34.0, 11.75], [33.75, 11.85], [33.68, 11.82], [33.53, 11.47], [33.18, 11.32], [33.03, 10.97], [32.5, 10.75], [32.25, 10.85], [32.0, 10.75], [31.47, 10.97], [31.25, 11.5], [31.35, 11.75], [31.32, 11.82], [31.25, 11.85], [31.0, 11.75], [30.47, 11.97], [30.25, 12.5], [30.47, 13.03], [30.82, 13.18], [30.97, 13.53], [31.5, 13.75]]]]}, "2011-04-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.5, 13.75], [31.75, 13.65], [32.0, 13.75], [32.25, 13.65], [32.32, 13.68], [32.35, 13.75], [32.25, 14.0], [32.47, 14.53], [33.0, 14.75], [33.53, 14.53], [33.68, 14.18], [33.75, 14.15], [34.0, 14.25], [34.25, 14.15], [34.5, 14.25], [35.03, 14.03], [35.25, 13.5], [35.15, 13.25], [35.25, 13.0], [35.03, 12.47], [34.68, 12.32], [34.53, 11.97], [34.0, 11.75], [33.75, 11.85], [33.68, 11.82], [33.53, 11.47], [33.18, 11.32], [33.03, 10.97], [32.5, 10.75], [32.25, 10.85], [32.0, 10.75], [31.47, 10.97], [31.25, 11.5], [31.35, 11.75], [31.32, 11.82], [31.25, 11.85], [31.0, 11.75], [30.47, 11.97], [30.25, 12.5], [30.47, 13.03], [30.82, 13.18], [30.97, 13.53], [31.5, 13.75]]]]}, "2011-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.5, 13.75], [31.75, 13.65], [32.0, 13.75], [32.25, 13.65], [32.32, 13.68], [32.35, 13.75], [32.25, 14.0], [32.47, 14.53], [33.0, 14.75], [33.53, 14.53], [33.68, 14.18], [33.75, 14.15], [34.0, 14.25], [34.25, 14.15], [34.5, 14.25], [35.03, 14.03], [35.25, 13.5], [35.15, 13.25], [35.25, 13.0], [35.03, 12.47], [34.68, 12.32], [34.53, 11.97], [34.0, 11.75], [33.75, 11.85], [33.68, 11.82], [33.53, 11.47], [33.18, 11.32], [33.03, 10.97], [32.5, 10.75], [32.25, 10.85], [32.0, 10.75], [31.47, 10.97], [31.25, 11.5], [31.35, 11.75], [31.32, 11.82], [31.25, 11.85], [31.0, 11.75], [30.47, 11.97], [30.25, 12.5], [30.47, 13.03], [30.82, 13.18], [30.97, 13.53], [31.5, 13.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.3795992878279435}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.3733666640403848}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [29.083534505026194, 29.091404968438894, 29.675991078318532]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.861083117916166, 26.074440426971307, 27.24623402392507]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.5340527955011183, -3.5659872478277372, -3.020059948792299]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.3795992878279435, -4.251089531227024, -3.466472032122738]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7985972954757654, -1.7954992809176644, -1.5250108302371403]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9965548841440721, -2.025695742375334, -1.8044452588725208]}}