{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-05-20 10:52:20.681066", "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": "2026-Mar-24_to_2026-Mar-26_26.5_-8.5"}, "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": 2026030000692}, "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": "March 24 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 26 2026"}, "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": 76632.75620184702}, "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": ["Congo DRC"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-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": -8.5}, "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": 26.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "26.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 24.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 28.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -8.75}, "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": {"2026-03-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.75, -6.5], [23.97, -5.97], [24.5, -5.75], [25.0, -5.96], [25.5, -5.75], [25.75, -5.85], [26.0, -5.75], [26.25, -5.85], [26.5, -5.75], [27.03, -5.97], [27.18, -6.32], [27.25, -6.35], [27.5, -6.25], [27.75, -6.35], [28.0, -6.25], [28.53, -6.47], [28.75, -7.0], [28.65, -7.25], [28.75, -7.5], [28.53, -8.03], [28.18, -8.18], [28.03, -8.53], [27.5, -8.75], [27.25, -8.65], [27.18, -8.68], [27.03, -9.03], [26.5, -9.25], [26.25, -9.15], [26.0, -9.25], [25.47, -9.03], [25.32, -8.68], [24.97, -8.53], [24.82, -8.18], [24.47, -8.03], [24.25, -7.5], [24.35, -7.25], [24.32, -7.18], [23.97, -7.03], [23.75, -6.5]]]]}, "2026-03-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.75, -6.5], [23.97, -5.97], [24.5, -5.75], [25.0, -5.96], [25.5, -5.75], [25.75, -5.85], [26.0, -5.75], [26.25, -5.85], [26.5, -5.75], [27.03, -5.97], [27.18, -6.32], [27.25, -6.35], [27.5, -6.25], [27.75, -6.35], [28.0, -6.25], [28.53, -6.47], [28.75, -7.0], [28.65, -7.25], [28.75, -7.5], [28.53, -8.03], [28.18, -8.18], [28.03, -8.53], [27.5, -8.75], [27.25, -8.65], [27.18, -8.68], [27.03, -9.03], [26.5, -9.25], [26.25, -9.15], [26.0, -9.25], [25.47, -9.03], [25.32, -8.68], [24.97, -8.53], [24.82, -8.18], [24.47, -8.03], [24.25, -7.5], [24.35, -7.25], [24.32, -7.18], [23.97, -7.03], [23.75, -6.5]]]]}, "2026-03-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.75, -6.5], [23.97, -5.97], [24.5, -5.75], [25.0, -5.96], [25.5, -5.75], [25.75, -5.85], [26.0, -5.75], [26.25, -5.85], [26.5, -5.75], [27.03, -5.97], [27.18, -6.32], [27.25, -6.35], [27.5, -6.25], [27.75, -6.35], [28.0, -6.25], [28.53, -6.47], [28.75, -7.0], [28.65, -7.25], [28.75, -7.5], [28.53, -8.03], [28.18, -8.18], [28.03, -8.53], [27.5, -8.75], [27.25, -8.65], [27.18, -8.68], [27.03, -9.03], [26.5, -9.25], [26.25, -9.15], [26.0, -9.25], [25.47, -9.03], [25.32, -8.68], [24.97, -8.53], [24.82, -8.18], [24.47, -8.03], [24.25, -7.5], [24.35, -7.25], [24.32, -7.18], [23.97, -7.03], [23.75, -6.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.589468590960223}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.8631902081444491}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.33048492431641, 21.981724141438804, 21.850159759521546]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.769247945149743, 20.332088724772177, 20.221191660563193]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.64368478511547, -1.9322504502239872, -2.0136353890938903]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.016187637851772, -2.589468590960223, -2.2508672984917553]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4692037565142264, -1.6912766156218868, -1.7235580992523116]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.689718122259679, -2.310429484026903, -1.9312382507944779]}}