{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:01:56.575304", "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": "2024-Nov-25_to_2024-Nov-29_34.5_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": 2024110000531}, "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": "November 25 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 29 2024"}, "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": 98730.82863493373}, "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", "South Sudan", "Uganda"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "Africa", "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": 34.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "34.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 32.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 36.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 2.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 4.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[31.47, 4.53], [32.0, 4.75], [32.25, 4.65], [32.5, 4.75], [32.75, 4.65], [32.82, 4.68], [32.97, 5.03], [33.5, 5.25], [33.75, 5.15], [34.0, 5.25], [34.25, 5.15], [34.5, 5.25], [35.0, 5.04], [35.5, 5.25], [36.03, 5.03], [36.25, 4.5], [36.15, 4.25], [36.18, 4.18], [36.53, 4.03], [36.68, 3.68], [37.03, 3.53], [37.25, 3.0], [37.15, 2.75], [37.25, 2.5], [37.03, 1.97], [36.5, 1.75], [36.25, 1.85], [36.0, 1.75], [35.75, 1.85], [35.5, 1.75], [35.2, 1.88], [35.03, 1.47], [34.5, 1.25], [33.97, 1.47], [33.82, 1.82], [33.5, 1.96], [33.0, 1.75], [32.47, 1.97], [32.25, 2.5], [32.35, 2.75], [32.25, 3.0], [32.35, 3.25], [32.32, 3.32], [32.25, 3.35], [32.0, 3.25], [31.47, 3.47], [31.25, 4.0], [31.47, 4.53]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-Africa", "S.Eastern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-11-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.0, 3.25], [31.47, 3.47], [31.25, 4.0], [31.47, 4.53], [32.0, 4.75], [32.25, 4.65], [32.5, 4.75], [32.75, 4.65], [32.82, 4.68], [32.97, 5.03], [33.5, 5.25], [33.75, 5.15], [34.0, 5.25], [34.53, 5.03], [34.75, 4.5], [34.65, 4.25], [34.68, 4.18], [35.03, 4.03], [35.25, 3.5], [35.03, 2.97], [34.5, 2.75], [34.25, 2.85], [34.18, 2.82], [34.03, 2.47], [33.68, 2.32], [33.53, 1.97], [33.0, 1.75], [32.47, 1.97], [32.25, 2.5], [32.35, 2.75], [32.25, 3.0], [32.35, 3.25], [32.32, 3.32], [32.25, 3.35], [32.0, 3.25]]]]}, "2024-11-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.0, 3.25], [31.47, 3.47], [31.25, 4.0], [31.47, 4.53], [32.0, 4.75], [32.25, 4.65], [32.5, 4.75], [32.75, 4.65], [32.82, 4.68], [32.97, 5.03], [33.5, 5.25], [33.75, 5.15], [34.0, 5.25], [34.25, 5.15], [34.5, 5.25], [35.03, 5.03], [35.18, 4.68], [35.53, 4.53], [35.75, 4.0], [35.53, 3.47], [35.18, 3.32], [35.03, 2.97], [34.5, 2.75], [34.25, 2.85], [34.18, 2.82], [34.03, 2.47], [33.68, 2.32], [33.53, 1.97], [33.0, 1.75], [32.47, 1.97], [32.25, 2.5], [32.35, 2.75], [32.25, 3.0], [32.35, 3.25], [32.32, 3.32], [32.25, 3.35], [32.0, 3.25]]]]}, "2024-11-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.0, 3.25], [31.47, 3.47], [31.25, 4.0], [31.47, 4.53], [32.0, 4.75], [32.25, 4.65], [32.5, 4.75], [32.75, 4.65], [32.82, 4.68], [32.97, 5.03], [33.5, 5.25], [33.75, 5.15], [34.0, 5.25], [34.25, 5.15], [34.5, 5.25], [35.0, 5.04], [35.5, 5.25], [36.03, 5.03], [36.25, 4.5], [36.15, 4.25], [36.18, 4.18], [36.53, 4.03], [36.68, 3.68], [37.03, 3.53], [37.25, 3.0], [37.15, 2.75], [37.25, 2.5], [37.03, 1.97], [36.5, 1.75], [36.25, 1.85], [36.0, 1.75], [35.75, 1.85], [35.5, 1.75], [35.2, 1.88], [35.03, 1.47], [34.5, 1.25], [33.97, 1.47], [33.82, 1.82], [33.5, 1.96], [33.0, 1.75], [32.47, 1.97], [32.25, 2.5], [32.35, 2.75], [32.25, 3.0], [32.35, 3.25], [32.32, 3.32], [32.25, 3.35], [32.0, 3.25]]]]}, "2024-11-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.25, 3.0], [32.35, 3.25], [32.25, 3.5], [32.47, 4.03], [33.0, 4.25], [33.3, 4.12], [33.35, 4.25], [33.25, 4.5], [33.47, 5.03], [34.0, 5.25], [34.25, 5.15], [34.5, 5.25], [35.0, 5.04], [35.5, 5.25], [36.03, 5.03], [36.25, 4.5], [36.15, 4.25], [36.18, 4.18], [36.53, 4.03], [36.68, 3.68], [37.03, 3.53], [37.25, 3.0], [37.15, 2.75], [37.25, 2.5], [37.03, 1.97], [36.5, 1.75], [36.25, 1.85], [36.0, 1.75], [35.75, 1.85], [35.5, 1.75], [35.2, 1.88], [35.03, 1.47], [34.5, 1.25], [33.97, 1.47], [33.82, 1.82], [33.5, 1.96], [33.0, 1.75], [32.47, 1.97], [32.25, 2.5], [32.35, 2.75], [32.25, 3.0]]]]}, "2024-11-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.47, 1.97], [33.25, 2.5], [33.47, 3.03], [33.82, 3.18], [33.85, 3.25], [33.75, 3.5], [33.85, 3.75], [33.75, 4.0], [33.97, 4.53], [34.5, 4.75], [34.75, 4.65], [34.82, 4.68], [34.97, 5.03], [35.5, 5.25], [36.03, 5.03], [36.25, 4.5], [36.15, 4.25], [36.18, 4.18], [36.53, 4.03], [36.68, 3.68], [37.03, 3.53], [37.25, 3.0], [37.15, 2.75], [37.25, 2.5], [37.03, 1.97], [36.5, 1.75], [36.25, 1.85], [36.0, 1.75], [35.75, 1.85], [35.5, 1.75], [35.2, 1.88], [35.03, 1.47], [34.5, 1.25], [33.97, 1.47], [33.82, 1.82], [33.47, 1.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.76954691361334}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.8111997224199547}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.86244317917601, 22.243172095803686, 23.27090479532876, 23.545238455748006, 24.765565490722622]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.65816141764327, 19.044321950276696, 18.68840052286788, 19.101453399658226, 21.86749420166018]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.2410146690712134, -2.6422667967634954, -2.892544016567898, -3.1587280216951443, -2.7676273495951245]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.9976738888821615, -3.659544776939981, -3.5358317914368627, -4.76954691361334, -3.5794026240425296]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6541727943231448, -1.8218887318561505, -1.9511812386439658, -2.0825319004020666, -1.9019478325396877]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2654884503120636, -2.2296149266468355, -2.31663389137011, -2.7518734099646522, -2.8202789358450175]}}