{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:12:43.581336", "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-May-31_to_2018-Jun-04_41.0_3.5"}, "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": 2018050001237}, "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": "May 31 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 04 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 74035.88035186146}, "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", "Somalia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-Africa", "S.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": 3.5}, "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": 41.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "41.0\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": 1.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 6.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-05-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.53, 2.53], [42.75, 2.0], [42.53, 1.47], [42.0, 1.25], [41.75, 1.35], [41.5, 1.25], [40.97, 1.47], [40.75, 2.0], [40.97, 2.53], [41.5, 2.75], [41.75, 2.65], [42.0, 2.75], [42.53, 2.53]]], [[[40.25, 3.5], [40.47, 4.03], [41.0, 4.25], [41.25, 4.15], [41.5, 4.25], [42.03, 4.03], [42.25, 3.5], [42.03, 2.97], [41.5, 2.75], [41.25, 2.85], [41.0, 2.75], [40.47, 2.97], [40.25, 3.5]]]]}, "2018-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[41.5, 4.75], [41.93, 4.57], [41.75, 5.0], [41.97, 5.53], [42.5, 5.75], [43.03, 5.53], [43.25, 5.0], [43.03, 4.47], [42.5, 4.25], [42.07, 4.43], [42.25, 4.0], [42.15, 3.75], [42.18, 3.68], [42.25, 3.65], [42.5, 3.75], [43.03, 3.53], [43.25, 3.0], [43.15, 2.75], [43.25, 2.5], [43.15, 2.25], [43.25, 2.0], [43.15, 1.75], [43.25, 1.5], [43.03, 0.97], [42.5, 0.75], [42.25, 0.85], [42.0, 0.75], [41.47, 0.97], [41.32, 1.32], [40.97, 1.47], [40.75, 2.0], [40.97, 2.53], [41.32, 2.68], [41.35, 2.75], [41.32, 2.82], [41.25, 2.85], [41.0, 2.75], [40.47, 2.97], [40.25, 3.5], [40.47, 4.03], [40.82, 4.18], [40.97, 4.53], [41.5, 4.75]]]]}, "2018-06-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.85, 2.75], [39.75, 3.0], [39.97, 3.53], [40.32, 3.68], [40.47, 4.03], [40.82, 4.18], [40.85, 4.25], [40.75, 4.5], [40.97, 5.03], [41.32, 5.18], [41.35, 5.25], [41.25, 5.5], [41.47, 6.03], [41.82, 6.18], [41.97, 6.53], [42.5, 6.75], [43.03, 6.53], [43.25, 6.0], [43.15, 5.75], [43.25, 5.5], [43.15, 5.25], [43.25, 5.0], [43.03, 4.47], [42.68, 4.32], [42.65, 4.25], [42.75, 4.0], [42.63, 3.7], [43.03, 3.53], [43.25, 3.0], [43.15, 2.75], [43.25, 2.5], [43.15, 2.25], [43.25, 2.0], [43.15, 1.75], [43.25, 1.5], [43.03, 0.97], [42.5, 0.75], [42.25, 0.85], [42.0, 0.75], [41.47, 0.97], [41.32, 1.32], [41.0, 1.46], [40.5, 1.25], [39.97, 1.47], [39.75, 2.0], [39.85, 2.25], [39.75, 2.5], [39.85, 2.75]]]]}, "2018-06-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.85, 2.75], [39.75, 3.0], [39.97, 3.53], [40.32, 3.68], [40.47, 4.03], [40.82, 4.18], [40.85, 4.25], 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"anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.370205853217655, -1.4119138831390456, -1.6354400066596615, -1.5547969585791346, -1.5890835424227514]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.5208627033967446, -1.922567517843902, -2.3943826421864856, -2.1178714965383847, -1.9743287654212622]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3354908738066624, -1.4006244735613014, -1.6440808847878412, -1.5835488500555541, -1.6449087557584472]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.461410930617307, -1.656856912949633, -2.1526684040019575, -1.9663737313679783, -1.9652360191742615]}}