{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:36:13.885969", "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-Aug-28_to_2023-Sep-02_23.5_-14.5"}, "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": 2023080000641}, "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": "August 28 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 02 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 146063.1068032223}, "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": ["Zambia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa", "W.Southern-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": -14.5}, "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": 23.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "23.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 22.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 27.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -17.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -12.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-08-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.5, -15.75], [27.03, -15.97], [27.25, -16.5], [27.03, -17.03], [26.5, -17.25], [25.97, -17.03], [25.75, -16.5], [25.97, -15.97], [26.5, -15.75]]]]}, "2023-08-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.25, -16.0], [22.47, -15.47], [22.82, -15.32], [22.85, -15.25], [22.75, -15.0], [22.85, -14.75], [22.75, -14.5], [22.85, -14.25], [22.75, -14.0], [22.85, -13.75], [22.75, -13.5], [22.97, -12.97], [23.5, -12.75], [23.75, -12.85], [23.82, -12.82], [23.97, -12.47], [24.5, -12.25], [25.03, -12.47], [25.25, -13.0], [25.15, -13.25], [25.18, -13.32], [25.25, -13.35], [25.5, -13.25], [26.03, -13.47], [26.18, -13.82], [26.53, -13.97], [26.75, -14.5], [26.65, -14.75], [26.68, -14.82], [26.75, -14.85], [27.0, -14.75], [27.53, -14.97], [27.75, -15.5], [27.53, -16.03], [27.18, -16.18], [27.15, -16.25], [27.25, -16.5], [27.03, -17.03], [26.5, -17.25], [26.25, -17.15], [26.0, -17.25], [25.75, -17.15], [25.5, -17.25], [25.25, -17.15], [25.18, -17.18], [25.15, -17.25], [25.25, -17.5], [25.03, -18.03], [24.5, -18.25], [24.25, 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duration", "value": -4.0936866042135875}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.095265784343425}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.999100183654207, 19.882341343354767, 19.38804751180919, 20.310023263423375, 22.066898192063775, 22.424923427043893]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.999100183654207, 17.174797167106306, 17.09550730169269, 18.485908798917762, 21.878789502363986, 22.411494914120397]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.939749395562103, -2.9484719563019812, -3.607267523903531, -2.8083864348498166, -2.335778987305597, -2.102970901888739]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily 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