{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:53:22.857260", "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-27_to_2024-Oct-29_22.5_-28.0"}, "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": 2024100000443}, "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 27 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 29 2024"}, "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": 102040.19290864331}, "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": ["South Africa"]}, "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": -28.0}, "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": 22.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "22.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 22.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 26.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -31.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -27.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-10-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.97, -27.47], [22.5, -27.25], [22.75, -27.35], [23.0, -27.25], [23.25, -27.35], [23.32, -27.32], [23.47, -26.97], [24.0, -26.75], [24.53, -26.97], [24.75, -27.5], [24.65, -27.75], [24.75, -28.0], [24.65, -28.25], [24.68, -28.32], [24.75, -28.35], [25.0, -28.25], [25.53, -28.47], [25.68, -28.82], [26.03, -28.97], [26.18, -29.32], [26.53, -29.47], [26.75, -30.0], [26.53, -30.53], [26.18, -30.68], [26.03, -31.03], [25.68, -31.18], [25.65, -31.25], [25.75, -31.5], [25.53, -32.03], [25.0, -32.25], [24.75, -32.15], [24.5, -32.25], [24.25, -32.15], [24.0, -32.25], [23.75, -32.15], [23.5, -32.25], [22.97, -32.03], [22.75, -31.5], [22.85, -31.25], [22.75, -31.0], [22.96, -30.5], [22.82, -30.18], [22.47, -30.03], [22.25, -29.5], [22.35, -29.25], [22.32, -29.18], [21.97, -29.03], [21.75, -28.5], [21.85, -28.25], [21.75, -28.0], [21.97, -27.47]]]]}, "2024-10-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.97, -27.47], [22.5, -27.25], [22.75, -27.35], [23.0, -27.25], [23.25, -27.35], [23.32, -27.32], [23.47, -26.97], [24.0, -26.75], [24.53, -26.97], [24.75, -27.5], [24.65, -27.75], [24.75, -28.0], [24.65, -28.25], [24.68, -28.32], [24.75, -28.35], [25.0, -28.25], [25.53, -28.47], [25.68, -28.82], [26.03, -28.97], [26.18, -29.32], [26.53, -29.47], [26.75, -30.0], [26.53, -30.53], [26.18, -30.68], [26.03, -31.03], [25.68, -31.18], [25.65, -31.25], [25.75, -31.5], [25.53, -32.03], [25.0, -32.25], [24.75, -32.15], [24.5, -32.25], [24.25, -32.15], [24.0, -32.25], [23.75, -32.15], [23.5, -32.25], [22.97, -32.03], [22.75, -31.5], [22.85, -31.25], [22.75, -31.0], [22.96, -30.5], [22.82, -30.18], [22.47, -30.03], [22.25, -29.5], [22.35, -29.25], [22.32, -29.18], [21.97, -29.03], [21.75, -28.5], [21.85, -28.25], [21.75, -28.0], [21.97, -27.47]]]]}, "2024-10-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.97, -27.47], [22.5, -27.25], [22.75, -27.35], [23.0, -27.25], [23.25, -27.35], [23.32, -27.32], [23.47, -26.97], [24.0, -26.75], [24.53, -26.97], [24.75, -27.5], [24.65, -27.75], [24.75, -28.0], [24.65, -28.25], [24.68, -28.32], [24.75, -28.35], [25.0, -28.25], [25.53, -28.47], [25.68, -28.82], [26.03, -28.97], [26.18, -29.32], [26.53, -29.47], [26.75, -30.0], [26.53, -30.53], [26.18, -30.68], [26.03, -31.03], [25.68, -31.18], [25.65, -31.25], [25.75, -31.5], [25.53, -32.03], [25.0, -32.25], [24.75, -32.15], [24.5, -32.25], [24.25, -32.15], [24.0, -32.25], [23.75, -32.15], [23.5, -32.25], [22.97, -32.03], [22.75, -31.5], [22.85, -31.25], [22.75, -31.0], [22.96, -30.5], [22.82, -30.18], [22.47, -30.03], [22.25, -29.5], [22.35, -29.25], [22.32, -29.18], [21.97, -29.03], [21.75, -28.5], [21.85, -28.25], [21.75, -28.0], [21.97, -27.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.963974928991377}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.675581736388829}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.98556784914257, 11.947709321139143, 15.40114217390095]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.442774709065759, 8.348864491780603, 11.190061187744163]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.388018589137735, -8.535616715758245, -5.103109904270504]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.517391137667289, -9.963974928991377, -5.895219496620427]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.837657220248562, -2.4429381964706907, -1.430650312153616]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.30188432932206, -2.755266038016925, -1.6622390662609776]}}