{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:54:18.947996", "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": "2025-Jan-28_to_2025-Jan-30_35.5_-4.0"}, "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": 2025010000756}, "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": "January 28 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 30 2025"}, "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": 61581.26047959918}, "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": ["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": -4.0}, "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": 35.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "35.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 32.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 36.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -6.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -3.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-01-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.25, -4.5], [32.47, -3.97], [33.0, -3.75], [33.25, -3.85], [33.5, -3.75], [33.75, -3.85], [34.0, -3.75], [34.25, -3.85], [34.5, -3.75], [34.75, -3.85], [34.82, -3.82], [34.97, -3.47], [35.5, -3.25], [36.03, -3.47], [36.25, -4.0], [36.15, -4.25], [36.18, -4.32], [36.53, -4.47], [36.68, -4.82], [37.03, -4.97], [37.25, -5.5], [37.03, -6.03], [36.5, -6.25], [36.25, -6.15], [36.18, -6.18], [36.03, -6.53], [35.5, -6.75], [35.25, -6.65], [35.0, -6.75], [34.47, -6.53], [34.32, -6.18], [33.97, -6.03], [33.82, -5.68], [33.75, -5.65], [33.5, -5.75], [32.97, -5.53], [32.82, -5.18], [32.47, -5.03], [32.25, -4.5]]]]}, "2025-01-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.25, -4.5], [32.47, -3.97], [33.0, -3.75], [33.25, -3.85], [33.5, -3.75], [33.75, -3.85], [34.0, -3.75], [34.25, -3.85], [34.5, -3.75], [34.75, -3.85], [34.82, -3.82], [34.97, -3.47], [35.5, -3.25], [36.03, -3.47], [36.25, -4.0], [36.15, -4.25], [36.18, -4.32], [36.53, -4.47], [36.68, -4.82], [37.03, -4.97], [37.25, -5.5], [37.03, -6.03], [36.5, -6.25], [36.25, -6.15], [36.18, -6.18], [36.03, -6.53], [35.5, -6.75], [35.25, -6.65], [35.0, -6.75], [34.47, -6.53], [34.32, -6.18], [33.97, -6.03], [33.82, -5.68], [33.75, -5.65], [33.5, -5.75], [32.97, -5.53], [32.82, -5.18], [32.47, -5.03], [32.25, -4.5]]]]}, "2025-01-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.25, -4.5], [32.47, -3.97], [33.0, -3.75], [33.25, -3.85], [33.5, -3.75], [33.75, -3.85], [34.0, -3.75], [34.25, -3.85], [34.5, -3.75], [34.75, -3.85], [34.82, -3.82], [34.97, -3.47], [35.5, -3.25], [36.03, -3.47], [36.25, -4.0], [36.15, -4.25], [36.18, -4.32], [36.53, -4.47], [36.68, -4.82], [37.03, -4.97], [37.25, -5.5], [37.03, -6.03], [36.5, -6.25], [36.25, -6.15], [36.18, -6.18], [36.03, -6.53], [35.5, -6.75], [35.25, -6.65], [35.0, -6.75], [34.47, -6.53], [34.32, -6.18], [33.97, -6.03], [33.82, -5.68], [33.75, -5.65], [33.5, -5.75], [32.97, -5.53], [32.82, -5.18], [32.47, -5.03], [32.25, -4.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.4429935512101792}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.2857253855843767}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.007092285156205, 20.501389312744152, 19.9295458475749]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.384871419270837, 18.284441884358728, 16.397901153564476]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.4058762743420603, -1.928358552022516, -2.5229413303885537]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.124851744954128, -2.870150239483735, -3.4429935512101792]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7221544114235496, -1.3666022575015995, -1.8243264866636744]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1732938626158154, -1.6497509991659014, -3.1102363486075135]}}