{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:53:22.581190", "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-25_to_2024-Oct-30_13.0_-19.0"}, "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": 2024100000412}, "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 25 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 30 2024"}, "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": 84491.58151831217}, "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": ["Namibia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": ["South Atlantic Ocean"]}, "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": -19.0}, "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": 13.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "13.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 11.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 15.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -21.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -17.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-10-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.97, -19.53], [11.75, -19.0], [11.97, -18.47], [12.5, -18.25], [12.75, -18.35], [13.0, -18.25], [13.53, -18.47], [13.75, -19.0], [13.53, -19.53], [13.0, -19.75], [12.75, -19.65], [12.5, -19.75], [11.97, -19.53]]]]}, "2024-10-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.75, -19.0], [11.97, -18.47], [12.5, -18.25], [12.75, -18.35], [13.0, -18.25], [13.53, -18.47], [13.68, -18.82], [14.03, -18.97], [14.25, -19.5], [14.15, -19.75], [14.18, -19.82], [14.53, -19.97], [14.75, -20.5], [14.65, -20.75], [14.75, -21.0], [14.53, -21.53], [14.0, -21.75], [13.47, -21.53], [13.32, -21.18], [12.97, -21.03], [12.75, -20.5], [12.85, -20.25], [12.82, -20.18], [12.47, -20.03], [12.32, -19.68], [11.97, -19.53], [11.75, -19.0]]]]}, "2024-10-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.85, -18.25], [11.75, -18.0], [11.97, -17.47], [12.5, -17.25], [13.03, -17.47], [13.18, -17.82], [13.53, -17.97], [13.68, -18.32], [13.75, -18.35], [14.0, -18.25], [14.5, -18.46], [15.0, -18.25], [15.25, -18.35], [15.5, -18.25], [16.03, -18.47], [16.25, -19.0], [16.15, -19.25], [16.25, -19.5], [16.15, -19.75], [16.25, -20.0], [16.15, -20.25], [16.25, -20.5], [16.03, -21.03], [15.5, -21.25], [14.97, -21.03], [14.82, -20.68], [14.75, -20.65], [14.68, -20.68], [14.65, -20.75], [14.75, -21.0], [14.53, -21.53], [14.0, -21.75], [13.47, -21.53], [13.32, -21.18], [12.97, -21.03], [12.82, -20.68], [12.47, -20.53], [12.25, -20.0], [12.35, -19.75], [12.32, -19.68], [11.97, -19.53], [11.75, -19.0], [11.85, -18.75], [11.75, -18.5], [11.85, -18.25]]]]}, "2024-10-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.47, -17.47], [12.0, -17.25], [12.25, -17.35], [12.5, -17.25], [13.03, -17.47], [13.18, -17.82], [13.53, -17.97], [13.68, -18.32], [13.75, -18.35], [14.0, -18.25], [14.5, -18.46], [15.0, -18.25], [15.25, -18.35], [15.5, -18.25], [16.03, -18.47], [16.25, -19.0], [16.15, -19.25], [16.25, -19.5], [16.15, -19.75], [16.25, -20.0], [16.15, -20.25], [16.25, -20.5], [16.03, -21.03], [15.5, -21.25], [14.97, -21.03], [14.82, -20.68], [14.75, -20.65], [14.68, -20.68], [14.65, -20.75], [14.75, -21.0], [14.53, -21.53], [14.0, -21.75], [13.75, -21.65], [13.5, -21.75], [12.97, -21.53], [12.75, -21.0], [12.85, -20.75], [12.82, -20.68], [12.47, -20.53], [12.32, -20.18], [11.97, -20.03], [11.75, -19.5], [11.85, -19.25], [11.82, -19.18], [11.47, -19.03], [11.25, -18.5], [11.35, -18.25], [11.25, -18.0], [11.47, -17.47]]]]}, "2024-10-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.47, -17.47], [12.0, -17.25], [12.25, -17.35], [12.5, -17.25], [13.03, -17.47], [13.18, -17.82], [13.53, -17.97], [13.68, -18.32], [13.75, -18.35], [14.0, -18.25], [14.5, -18.46], [15.0, -18.25], [15.25, -18.35], [15.5, -18.25], [16.03, -18.47], [16.25, -19.0], [16.15, -19.25], [16.25, -19.5], [16.15, -19.75], [16.25, -20.0], [16.15, -20.25], [16.25, -20.5], [16.03, -21.03], [15.5, -21.25], [14.97, -21.03], [14.82, -20.68], [14.75, -20.65], [14.5, -20.75], [14.25, -20.65], [14.18, -20.68], [14.15, -20.75], [14.25, -21.0], [14.03, -21.53], [13.5, -21.75], [12.97, -21.53], [12.75, -21.0], [12.85, -20.75], [12.82, -20.68], [12.47, -20.53], [12.32, -20.18], [11.97, -20.03], [11.75, -19.5], [11.85, -19.25], [11.82, -19.18], [11.47, -19.03], [11.25, -18.5], [11.35, -18.25], [11.25, -18.0], [11.47, -17.47]]]]}, "2024-10-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[12.97, -21.53], [12.75, -21.0], [12.97, -20.47], [13.5, -20.25], [14.03, -20.47], [14.25, -21.0], [14.03, -21.53], [13.5, -21.75], [12.97, -21.53]]], [[[12.0, -17.25], [12.53, -17.47], [12.75, -18.0], [12.65, -18.25], [12.68, -18.32], [13.03, -18.47], [13.25, -19.0], [13.15, -19.25], [13.25, -19.5], [13.03, -20.03], [12.5, -20.25], [11.97, -20.03], [11.75, -19.5], [11.85, -19.25], [11.82, -19.18], [11.47, -19.03], [11.25, -18.5], [11.35, -18.25], [11.25, -18.0], [11.47, -17.47], [12.0, -17.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.6947129409273884}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.599819944847494}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.072930908203148, 16.379317220052087, 18.840512339274085, 17.45599732673037, 19.329531214787437, 15.141744995117222]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.757419840494833, 14.763208007812523, 14.507227834065759, 14.202217356363974, 14.064084625244163, 14.129424031575525]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.388454840182021, -3.3918644982326995, -3.9379319468454743, -4.51057684980818, -2.821669788218471, -1.4905254570064017]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.3174360869942916, -4.390405718854765, -5.95014797839093, -7.6947129409273884, -3.8265532897556795, -2.089714035082352]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.1967234646413722, -1.3592282779441174, -1.742451770882141, -2.085118997230209, -1.3985045284605824, -1.2309771242880962]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.2685484745826103, -1.5719049559696656, -2.5016605427536596, -3.1875798700392606, -1.7687834841700143, -1.459099213891678]}}