{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:53:22.061528", "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-20_to_2024-Oct-23_1.5_25.0"}, "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": 2024100000354}, "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 20 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": 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": 67335.15942606074}, "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": 25.0}, "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": 1.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "1.5\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": 3.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 23.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 25.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-10-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-0.65, 24.75], [-0.75, 25.0], [-0.65, 25.25], [-0.75, 25.5], [-0.53, 26.03], [0.0, 26.25], [0.25, 26.15], [0.5, 26.25], [1.03, 26.03], [1.18, 25.68], [1.25, 25.65], [1.32, 25.68], [1.47, 26.03], [2.0, 26.25], [2.25, 26.15], [2.5, 26.25], [2.75, 26.15], [3.0, 26.25], [3.53, 26.03], [3.75, 25.5], [3.65, 25.25], [3.75, 25.0], [3.65, 24.75], [3.75, 24.5], [3.53, 23.97], [3.0, 23.75], [2.75, 23.85], [2.5, 23.75], [2.25, 23.85], [2.0, 23.75], [1.75, 23.85], [1.68, 23.82], [1.53, 23.47], [1.0, 23.25], [0.75, 23.35], [0.5, 23.25], [0.25, 23.35], [0.0, 23.25], [-0.53, 23.47], [-0.75, 24.0], [-0.65, 24.25], [-0.75, 24.5], [-0.65, 24.75]]]]}, "2024-10-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.03, 25.53], [-0.68, 25.68], [-0.53, 26.03], [0.0, 26.25], [0.25, 26.15], [0.5, 26.25], [1.03, 26.03], [1.18, 25.68], [1.25, 25.65], [1.32, 25.68], [1.47, 26.03], [2.0, 26.25], [2.25, 26.15], [2.5, 26.25], [2.75, 26.15], [3.0, 26.25], [3.53, 26.03], [3.75, 25.5], [3.65, 25.25], [3.75, 25.0], [3.65, 24.75], [3.75, 24.5], [3.53, 23.97], [3.0, 23.75], [2.75, 23.85], [2.5, 23.75], [2.25, 23.85], [2.0, 23.75], [1.75, 23.85], [1.68, 23.82], [1.53, 23.47], [1.0, 23.25], [0.75, 23.35], [0.5, 23.25], [0.25, 23.35], [0.0, 23.25], [-0.53, 23.47], [-0.68, 23.82], [-1.03, 23.97], [-1.25, 24.5], [-1.15, 24.75], [-1.25, 25.0], [-1.03, 25.53]]]]}, "2024-10-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.03, 25.53], [-0.68, 25.68], [-0.53, 26.03], [0.0, 26.25], [0.25, 26.15], [0.5, 26.25], [1.03, 26.03], [1.18, 25.68], [1.25, 25.65], [1.32, 25.68], [1.47, 26.03], [2.0, 26.25], [2.25, 26.15], [2.5, 26.25], [2.75, 26.15], [3.0, 26.25], [3.53, 26.03], [3.75, 25.5], [3.65, 25.25], [3.75, 25.0], [3.65, 24.75], [3.75, 24.5], [3.53, 23.97], [3.0, 23.75], [2.75, 23.85], [2.5, 23.75], [2.25, 23.85], [2.0, 23.75], [1.75, 23.85], [1.68, 23.82], [1.53, 23.47], [1.0, 23.25], [0.75, 23.35], [0.5, 23.25], [0.25, 23.35], [0.0, 23.25], [-0.53, 23.47], [-0.68, 23.82], [-1.03, 23.97], [-1.25, 24.5], [-1.15, 24.75], [-1.25, 25.0], [-1.03, 25.53]]]]}, "2024-10-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.03, 25.53], [-0.68, 25.68], [-0.53, 26.03], [0.0, 26.25], [0.25, 26.15], [0.5, 26.25], [1.03, 26.03], [1.18, 25.68], [1.25, 25.65], [1.5, 25.75], [2.03, 25.53], [2.25, 25.0], [2.03, 24.47], [1.5, 24.25], [1.25, 24.35], [1.0, 24.25], [0.75, 24.35], [0.5, 24.25], [0.25, 24.35], [0.18, 24.32], [0.03, 23.97], [-0.5, 23.75], [-1.03, 23.97], [-1.25, 24.5], [-1.15, 24.75], [-1.25, 25.0], [-1.03, 25.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.379221512741765}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.7602076922988923}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.31267249367454, 24.062636311848962, 23.919538964165554, 22.965793863932277]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.351143137613974, 22.800469970703148, 22.84830754597982, 22.302453613281273]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.8299507898143657, -3.7663895228343, -3.6621072648765085, -3.844169964792272]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.379221512741765, -4.14265056391514, -4.048884585517101, -4.018326194159556]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6343431934305719, -1.5919142095051153, -1.535334738411364, -1.5540063724801898]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8293575019158343, -1.7051647364195326, -1.6098852703749529, -1.6165297370609488]}}