{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:32:22.866001", "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": "2022-Sep-30_to_2022-Oct-04_38.5_-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": 2022090001031}, "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": "September 30 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 04 2022"}, "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": 61735.55168050066}, "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": ["Kenya", "Tanzania"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": -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": 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": 38.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 40.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -5.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -0.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-09-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.85, -3.75], [37.75, -3.5], [37.97, -2.97], [38.5, -2.75], [39.03, -2.97], [39.25, -3.5], [39.15, -3.75], [39.25, -4.0], [39.15, -4.25], [39.25, -4.5], [39.03, -5.03], [38.5, -5.25], [37.97, -5.03], [37.75, -4.5], [37.85, -4.25], [37.75, -4.0], [37.85, -3.75]]]]}, "2022-10-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.85, -4.25], [37.75, -4.0], [37.85, -3.75], [37.75, -3.5], [37.97, -2.97], [38.32, -2.82], [38.35, -2.75], [38.25, -2.5], [38.35, -2.25], [38.25, -2.0], [38.47, -1.47], [38.82, -1.32], [38.96, -1.0], [38.75, -0.5], [38.97, 0.03], [39.5, 0.25], [39.75, 0.15], [40.0, 0.25], [40.53, 0.03], [40.75, -0.5], [40.65, -0.75], [40.75, -1.0], [40.65, -1.25], [40.75, -1.5], [40.65, -1.75], [40.75, -2.0], [40.53, -2.53], [40.18, -2.68], [40.15, -2.75], [40.25, -3.0], [40.15, -3.25], [40.25, -3.5], [40.03, -4.03], [39.68, -4.18], [39.65, -4.25], [39.75, -4.5], [39.53, -5.03], [39.18, -5.18], [39.03, -5.53], [38.5, -5.75], [37.97, -5.53], [37.75, -5.0], [37.85, -4.75], [37.75, -4.5], [37.85, -4.25]]]]}, "2022-10-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.85, -4.25], [37.75, -4.0], [37.85, -3.75], [37.75, -3.5], [37.97, -2.97], [38.32, -2.82], [38.35, -2.75], [38.25, -2.5], [38.35, -2.25], [38.25, -2.0], [38.47, -1.47], [38.82, -1.32], [38.96, -1.0], [38.75, -0.5], [38.97, 0.03], [39.5, 0.25], [39.75, 0.15], [40.0, 0.25], [40.53, 0.03], [40.75, -0.5], [40.65, -0.75], [40.75, -1.0], [40.65, -1.25], [40.75, -1.5], [40.65, -1.75], [40.75, -2.0], [40.53, -2.53], [40.18, -2.68], [40.15, -2.75], [40.25, -3.0], [40.15, -3.25], [40.25, -3.5], [40.03, -4.03], [39.68, -4.18], [39.65, -4.25], [39.75, -4.5], [39.53, -5.03], [39.18, -5.18], [39.03, -5.53], [38.5, -5.75], [37.97, -5.53], [37.75, -5.0], [37.85, -4.75], [37.75, -4.5], [37.85, -4.25]]]]}, "2022-10-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.85, -4.25], [37.75, -4.0], [37.97, -3.47], [38.32, -3.32], [38.35, -3.25], [38.25, -3.0], [38.35, -2.75], [38.25, -2.5], [38.35, -2.25], 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20.397696389721716]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.1389065343613727, -1.4522719740764984, -1.2952051188380325, -1.3563942037104653, -1.2219227884310668]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.166107081401833, -1.8922706435475334, -1.7494013677840599, -1.9171576957677416, -1.4180370837436271]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.519448734273464, -1.9772743501744032, -1.7463535391373177, -1.80354800715879, -1.610611313017705]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.60075573000077, -2.6477569814685022, -2.150751806473746, -2.4242303847101865, -1.9327497549239108]}}