{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:53:21.880894", "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-19_to_2024-Oct-23_1.0_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": 2024100000343}, "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 19 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 23 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 76016.65410955218}, "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": ["Algeria"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "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": 1.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "1.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": -0.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 2.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 26.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 30.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-10-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[1.5, 30.75], [1.75, 30.65], [2.0, 30.75], [2.53, 30.53], [2.75, 30.0], [2.65, 29.75], [2.75, 29.5], [2.53, 28.97], [2.0, 28.75], [1.75, 28.85], [1.5, 28.75], [1.25, 28.85], [1.0, 28.75], [0.47, 28.97], [0.25, 29.5], [0.47, 30.03], [0.82, 30.18], [0.97, 30.53], [1.5, 30.75]]]]}, "2024-10-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.03, 29.03], [-0.68, 29.18], [-0.53, 29.53], [0.0, 29.75], [0.25, 29.65], [0.32, 29.68], [0.47, 30.03], [0.82, 30.18], [0.97, 30.53], [1.5, 30.75], [1.75, 30.65], [2.0, 30.75], [2.53, 30.53], [2.75, 30.0], [2.65, 29.75], [2.68, 29.68], [3.03, 29.53], [3.25, 29.0], [3.15, 28.75], [3.25, 28.5], [3.03, 27.97], [2.68, 27.82], [2.53, 27.47], [2.0, 27.25], [1.75, 27.35], [1.68, 27.32], [1.53, 26.97], [1.18, 26.82], [1.03, 26.47], [0.5, 26.25], [-0.03, 26.47], [-0.18, 26.82], [-0.53, 26.97], [-0.68, 27.32], [-1.03, 27.47], [-1.25, 28.0], [-1.15, 28.25], [-1.25, 28.5], [-1.03, 29.03]]]]}, "2024-10-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.03, 29.03], [-0.68, 29.18], [-0.53, 29.53], [0.0, 29.75], [0.25, 29.65], [0.32, 29.68], [0.47, 30.03], [0.82, 30.18], [0.97, 30.53], [1.5, 30.75], [1.75, 30.65], [2.0, 30.75], [2.53, 30.53], [2.75, 30.0], [2.65, 29.75], [2.68, 29.68], [3.03, 29.53], [3.25, 29.0], [3.15, 28.75], [3.25, 28.5], [3.03, 27.97], [2.68, 27.82], [2.53, 27.47], [2.0, 27.25], [1.75, 27.35], [1.68, 27.32], [1.53, 26.97], [1.18, 26.82], [1.03, 26.47], [0.5, 26.25], [-0.03, 26.47], [-0.18, 26.82], [-0.53, 26.97], [-0.68, 27.32], [-1.03, 27.47], [-1.25, 28.0], [-1.15, 28.25], [-1.25, 28.5], [-1.03, 29.03]]]]}, "2024-10-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.03, 29.03], [-0.68, 29.18], [-0.53, 29.53], [0.0, 29.75], [0.25, 29.65], [0.32, 29.68], [0.47, 30.03], [1.0, 30.25], [1.25, 30.15], [1.5, 30.25], [1.75, 30.15], [2.0, 30.25], [2.53, 30.03], [2.68, 29.68], [3.03, 29.53], [3.25, 29.0], [3.15, 28.75], [3.25, 28.5], [3.03, 27.97], [2.68, 27.82], [2.53, 27.47], [2.0, 27.25], [1.75, 27.35], [1.68, 27.32], [1.53, 26.97], [1.18, 26.82], [1.03, 26.47], [0.5, 26.25], [-0.03, 26.47], [-0.18, 26.82], [-0.53, 26.97], [-0.68, 27.32], [-1.03, 27.47], [-1.25, 28.0], [-1.15, 28.25], [-1.25, 28.5], [-1.03, 29.03]]]]}, "2024-10-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.5, 28.75], [0.75, 28.65], [1.0, 28.75], [1.53, 28.53], [1.75, 28.0], [1.65, 27.75], [1.75, 27.5], [1.53, 26.97], [1.18, 26.82], [1.03, 26.47], [0.5, 26.25], [-0.03, 26.47], [-0.18, 26.82], [-0.53, 26.97], [-0.75, 27.5], [-0.53, 28.03], [-0.18, 28.18], [-0.03, 28.53], [0.5, 28.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.621892653637758}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.455834320876883}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.772622680664085, 20.477055758521658, 20.63917439778652, 20.558500104072778, 22.15277913411461]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.076089477539085, 17.891426340738974, 18.642510986328148, 18.620117441813193, 21.485559082031273]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.3264659371221, -4.8122159000577245, -4.382810706058316, -4.33629579828977, -3.6199984216559074]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.505037783236787, -5.621892653637758, -4.820531901880713, -4.89272664479347, -3.8659509422399765]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4945351077501225, -1.749988379939778, -1.5902993797588927, 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