{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:50:55.870105", "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": "2023-Feb-06_to_2023-Feb-08_40.0_-13.5"}, "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": 2023020000324}, "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": "February 06 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 08 2023"}, "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": 78062.27960391084}, "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": ["Mozambique"]}, "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": -13.5}, "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": 40.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "40.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 38.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 40.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -15.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -12.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[37.75, -13.5], [37.97, -12.97], [38.32, -12.82], [38.35, -12.75], [38.25, -12.5], [38.47, -11.97], [38.82, -11.82], [38.97, -11.47], [39.5, -11.25], [40.03, -11.47], [40.18, -11.82], [40.53, -11.97], [40.68, -12.32], [41.03, -12.47], [41.25, -13.0], [41.15, -13.25], [41.25, -13.5], [41.15, -13.75], [41.25, -14.0], [41.15, -14.25], [41.25, -14.5], [41.15, -14.75], [41.25, -15.0], [41.15, -15.25], [41.25, -15.5], [41.03, -16.03], [40.5, -16.25], [39.97, -16.03], [39.75, -15.5], [39.85, -15.25], [39.82, -15.18], [39.75, -15.15], [39.68, -15.18], [39.53, -15.53], [39.0, -15.75], [38.47, -15.53], [38.32, -15.18], [37.97, -15.03], [37.75, -14.5], [37.85, -14.25], [37.75, -14.0], [37.85, -13.75], [37.75, -13.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-02-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.75, -14.0], [37.85, -13.75], [37.75, -13.5], [37.97, -12.97], [38.32, -12.82], [38.35, -12.75], [38.25, -12.5], [38.47, -11.97], [38.82, -11.82], [38.97, -11.47], [39.5, -11.25], [40.03, -11.47], [40.18, -11.82], [40.53, -11.97], [40.68, -12.32], [41.03, -12.47], [41.25, -13.0], [41.15, -13.25], [41.25, -13.5], [41.15, -13.75], [41.25, -14.0], [41.15, -14.25], [41.25, -14.5], [41.15, -14.75], [41.25, -15.0], [41.15, -15.25], [41.25, -15.5], [41.03, -16.03], [40.5, -16.25], [39.97, -16.03], [39.75, -15.5], [39.85, -15.25], [39.82, -15.18], [39.75, -15.15], [39.68, -15.18], [39.53, -15.53], [39.0, -15.75], [38.47, -15.53], [38.32, -15.18], [37.97, -15.03], [37.75, -14.5], [37.85, -14.25], [37.75, -14.0]]]]}, "2023-02-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.75, -14.0], [37.85, -13.75], [37.75, -13.5], [37.97, -12.97], [38.32, -12.82], [38.35, -12.75], [38.25, -12.5], [38.47, -11.97], [38.82, -11.82], [38.97, -11.47], [39.5, -11.25], [40.03, -11.47], [40.18, -11.82], [40.53, -11.97], [40.68, -12.32], [41.03, -12.47], [41.25, -13.0], [41.15, -13.25], [41.25, -13.5], [41.15, -13.75], [41.25, -14.0], [41.15, -14.25], [41.25, -14.5], [41.15, -14.75], [41.25, -15.0], [41.15, -15.25], [41.25, -15.5], [41.03, -16.03], [40.5, -16.25], [39.97, -16.03], [39.75, -15.5], [39.85, -15.25], [39.82, -15.18], [39.75, -15.15], [39.68, -15.18], [39.53, -15.53], [39.0, -15.75], [38.47, -15.53], [38.32, -15.18], [37.97, -15.03], [37.75, -14.5], [37.85, -14.25], [37.75, -14.0]]]]}, "2023-02-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.75, -14.0], [37.85, -13.75], [37.75, -13.5], [37.97, -12.97], [38.32, -12.82], [38.35, -12.75], [38.25, -12.5], [38.47, -11.97], [38.82, -11.82], [38.97, -11.47], [39.5, -11.25], [40.03, -11.47], [40.18, -11.82], [40.53, -11.97], [40.68, -12.32], [41.03, -12.47], [41.25, -13.0], [41.15, -13.25], [41.25, -13.5], [41.15, -13.75], [41.25, -14.0], [41.15, -14.25], [41.25, -14.5], [41.15, -14.75], [41.25, -15.0], [41.15, -15.25], [41.25, -15.5], [41.03, -16.03], [40.5, -16.25], [39.97, -16.03], [39.75, -15.5], [39.85, -15.25], [39.82, -15.18], [39.75, -15.15], [39.68, -15.18], [39.53, -15.53], [39.0, -15.75], [38.47, -15.53], [38.32, -15.18], [37.97, -15.03], [37.75, -14.5], [37.85, -14.25], [37.75, -14.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.3539533907742225}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5698935417006845}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.25727712439931, 23.96515459466218, 23.77145258794468]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.03971361321885, 22.792141393789848, 22.72183407623578]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3587510010881898, -1.60206215274964, -1.7488674712642238]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.6961240264162143, -2.3539533907742225, -2.111454143582762]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8259596070717619, -2.072360909878153, -2.1672270303387555]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.4076817693106545, -2.9384247544463626, -2.7554819862536735]}}