{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:01:19.576488", "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": "2024-Oct-15_to_2024-Oct-18_30.5_-12.5"}, "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": 2024100000310}, "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": "October 15 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 18 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 226253.7373811748}, "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, The Democratic Republic of the", "Mozambique", "Zambia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "Africa", "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": -12.5}, "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": 30.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "30.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 27.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 33.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -15.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -9.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[27.32, -13.82], [27.41, -13.61], [27.46, -13.5], [27.25, -13.0], [27.35, -12.75], [27.25, -12.5], [27.47, -11.97], [28.0, -11.75], [28.25, -11.85], [28.32, -11.82], [28.35, -11.75], [28.25, -11.5], [28.47, -10.97], [28.82, -10.82], [28.97, -10.47], [29.32, -10.32], [29.35, -10.25], [29.25, -10.0], [29.47, -9.47], [30.0, -9.25], [30.25, -9.35], [30.5, -9.25], [30.8, -9.37], [30.97, -8.97], [31.5, -8.75], [32.03, -8.97], [32.18, -9.32], [32.25, -9.35], [32.5, -9.25], [33.03, -9.47], [33.18, -9.82], [33.53, -9.97], [33.75, -10.5], [33.65, -10.75], [33.75, -11.0], [33.65, -11.25], [33.75, -11.5], [33.65, -11.75], [33.75, -12.0], [33.53, -12.53], [33.18, -12.68], [33.03, -13.03], [32.68, -13.18], [32.65, -13.25], [32.75, -13.5], [32.53, -14.03], [32.0, -14.25], [31.75, -14.15], [31.68, -14.18], [31.65, -14.25], [31.75, -14.5], [31.53, -15.03], [31.18, -15.18], [31.03, -15.53], [30.5, -15.75], [30.0, -15.54], [29.5, -15.75], [29.25, -15.65], [29.0, -15.75], [28.75, -15.65], [28.5, -15.75], [28.25, -15.65], [28.0, -15.75], [27.47, -15.53], [27.32, -15.18], [26.97, -15.03], [26.75, -14.5], [26.97, -13.97], [27.32, -13.82]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Eastern-Africa", "E.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-10-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.97, -15.03], [26.75, -14.5], [26.97, -13.97], [27.32, -13.82], [27.46, -13.5], [27.25, -13.0], [27.35, -12.75], [27.25, -12.5], [27.47, -11.97], [28.0, -11.75], [28.25, -11.85], [28.32, -11.82], [28.35, -11.75], [28.25, -11.5], [28.47, -10.97], [28.82, -10.82], [28.97, -10.47], [29.32, -10.32], [29.35, -10.25], [29.25, -10.0], [29.47, -9.47], [30.0, -9.25], [30.25, -9.35], [30.5, -9.25], [30.8, -9.37], [30.97, -8.97], [31.5, -8.75], [32.03, -8.97], [32.25, -9.5], [32.03, -10.03], [31.5, -10.25], [31.2, -10.12], [31.15, -10.25], [31.25, -10.5], [31.15, -10.75], [31.25, -11.0], [31.15, -11.25], [31.25, -11.5], 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-13.35], [29.82, -13.32], [29.88, -13.2], [29.75, -13.15], [29.5, -13.25], [29.75, -13.35]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.430527879966007}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.798095558408308}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.944626593211353, 22.13634039984811, 21.630449727376288, 23.650483919539568]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.235041554768884, 18.56410624186202, 18.196468607584677, 21.028501129150413]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.385988919151603, -3.9465351530040356, -4.4956099084375865, -2.9275659924065303]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.983414601567802, -7.047240060906688, -7.430527879966007, -4.277298332391979]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8252168391401236, -2.1678843615126704, -2.4628486987104163, -1.6079666621742426]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.5648276830823975, -2.991634618414324, -3.2061893797644196, -2.0510295906475924]}}