{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:00.114496", "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-Apr-06_to_2013-Apr-14_37.0_4.5"}, "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": 2013040000278}, "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 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 14 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 9}, "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": 83167.04562916973}, "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", "Kenya", "South 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": 4.5}, "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": 37.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "37.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 34.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 38.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 2.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 6.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-04-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.5, 5.25], [38.03, 5.03], [38.25, 4.5], [38.03, 3.97], [37.5, 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5.53], [37.5, 5.75]]]]}, "2013-04-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.97, 3.97], [35.75, 4.5], [35.97, 5.03], [36.5, 5.25], [36.75, 5.15], [36.82, 5.18], [36.97, 5.53], [37.5, 5.75], [38.03, 5.53], [38.18, 5.18], [38.53, 5.03], [38.75, 4.5], [38.53, 3.97], [38.13, 3.8], [38.25, 3.5], [38.03, 2.97], [37.5, 2.75], [36.97, 2.97], [36.75, 3.5], [36.88, 3.8], [36.75, 3.85], [36.5, 3.75], [35.97, 3.97]]]]}, "2013-04-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.97, 3.97], [35.75, 4.5], [35.97, 5.03], [36.5, 5.25], [37.03, 5.03], [37.25, 4.5], [37.07, 4.07], [37.5, 4.25], [38.03, 4.03], [38.25, 3.5], [38.03, 2.97], [37.5, 2.75], [36.97, 2.97], [36.75, 3.5], [36.93, 3.93], [36.5, 3.75], [35.97, 3.97]]]]}, "2013-04-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.35, 5.25], [34.25, 5.5], [34.47, 6.03], [34.82, 6.18], [34.97, 6.53], [35.32, 6.68], [35.47, 7.03], [36.0, 7.25], [36.53, 7.03], [36.75, 6.5], [36.65, 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"value": -5.6752592378574604}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.1913626761296316}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.521753078706013, 21.824911578882222, 22.495908267262337, 22.39024442526886, 23.01674300830564, 25.903155270318166, 23.746238101441577, 25.51325837550985, 25.795198830761763]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.521753078706013, 20.03894614705922, 20.770559370444857, 21.01984582856511, 20.16814902698252, 25.43282153631486, 20.703965478005102, 22.06473388773162, 22.042970176048186]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.413091037303218, -3.1251155895368186, -2.390985038755403, -2.145820665419914, -3.0508387680862823, 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