{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:55:25.787135", "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-May-06_to_2025-May-08_41.5_-1.0"}, "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": 2025050000169}, "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 06 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 08 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": 52542.909990938315}, "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", "Somalia"]}, "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": -1.0}, "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": 41.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "41.5\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": 42.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -1.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 1.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-05-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.97, 0.53], [40.32, 0.68], [40.47, 1.03], [40.82, 1.18], [40.85, 1.25], [40.75, 1.5], [40.97, 2.03], [41.5, 2.25], [42.03, 2.03], [42.25, 1.5], [42.15, 1.25], [42.18, 1.18], [42.53, 1.03], [42.75, 0.5], [42.65, 0.25], [42.75, 0.0], [42.65, -0.25], [42.75, -0.5], [42.53, -1.03], [42.18, -1.18], [42.15, -1.25], [42.25, -1.5], [42.03, -2.03], [41.5, -2.25], [41.25, -2.15], [41.0, -2.25], [40.47, -2.03], [40.25, -1.5], [40.35, -1.25], [40.32, -1.18], [39.97, -1.03], [39.75, -0.5], [39.85, -0.25], [39.75, 0.0], [39.97, 0.53]]]]}, "2025-05-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.97, 0.53], [40.32, 0.68], [40.47, 1.03], [40.82, 1.18], [40.85, 1.25], [40.75, 1.5], [40.97, 2.03], [41.5, 2.25], [42.03, 2.03], [42.25, 1.5], [42.15, 1.25], [42.18, 1.18], [42.53, 1.03], [42.75, 0.5], [42.65, 0.25], [42.75, 0.0], [42.65, -0.25], [42.75, -0.5], [42.53, -1.03], [42.18, -1.18], [42.15, -1.25], [42.25, -1.5], [42.03, -2.03], [41.5, -2.25], [41.25, -2.15], [41.0, -2.25], [40.47, -2.03], [40.25, -1.5], [40.35, -1.25], [40.32, -1.18], [39.97, -1.03], [39.75, -0.5], [39.85, -0.25], [39.75, 0.0], [39.97, 0.53]]]]}, "2025-05-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.97, 0.53], [40.32, 0.68], [40.47, 1.03], [40.82, 1.18], [40.85, 1.25], [40.75, 1.5], [40.97, 2.03], [41.5, 2.25], [42.03, 2.03], [42.25, 1.5], [42.15, 1.25], [42.18, 1.18], [42.53, 1.03], [42.75, 0.5], [42.65, 0.25], [42.75, 0.0], [42.65, -0.25], [42.75, -0.5], [42.53, -1.03], [42.18, -1.18], [42.15, -1.25], [42.25, -1.5], [42.03, -2.03], [41.5, -2.25], [41.25, -2.15], [41.0, -2.25], [40.47, -2.03], [40.25, -1.5], [40.35, -1.25], [40.32, -1.18], [39.97, -1.03], [39.75, -0.5], [39.85, -0.25], [39.75, 0.0], [39.97, 0.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.307316457919626}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.8076628093532976}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.720721330829747, 26.563916853362457, 26.285757954915425]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.530904388427757, 25.532729085286462, 25.13536732991537]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6347522406202937, -1.764741090783877, -2.023495096655722]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.307316457919626, -2.017168584353101, -2.2769889910789516]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.507945340932356, -1.6717549318383496, -1.973414559231343]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0143123834504943, -2.076474665268955, -2.2996771650794807]}}