{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:04:09.939983", "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": "2015-Nov-23_to_2015-Nov-25_0.0_31.5"}, "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": 2015110000682}, "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": "November 23 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 25 2015"}, "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": 144835.49560238334}, "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", "Morocco"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean"]}, "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": 31.5}, "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": 360.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "0.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 357.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 362.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 30.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 36.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-11-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-3.25, 32.0], [-3.03, 32.53], [-2.68, 32.68], [-2.65, 32.75], [-2.68, 32.82], [-3.03, 32.97], [-3.25, 33.5], [-3.03, 34.03], [-2.68, 34.18], [-2.65, 34.25], [-2.75, 34.5], [-2.53, 35.03], [-2.0, 35.25], [-1.75, 35.15], [-1.5, 35.25], [-1.25, 35.15], [-1.0, 35.25], [-0.75, 35.15], [-0.68, 35.18], [-0.53, 35.53], [-0.18, 35.68], [-0.03, 36.03], [0.5, 36.25], [0.75, 36.15], [0.82, 36.18], [0.97, 36.53], [1.5, 36.75], [1.75, 36.65], [2.0, 36.75], [2.53, 36.53], [2.75, 36.0], [2.54, 35.5], [2.75, 35.0], [2.53, 34.47], [2.0, 34.25], [1.75, 34.35], [1.5, 34.25], [1.25, 34.35], [1.18, 34.32], [1.13, 34.2], [1.53, 34.03], [1.75, 33.5], [1.54, 33.0], [1.75, 32.5], [1.65, 32.25], [1.75, 32.0], [1.53, 31.47], [1.18, 31.32], [1.03, 30.97], [0.68, 30.82], [0.53, 30.47], [0.0, 30.25], [-0.25, 30.35], [-0.5, 30.25], [-0.75, 30.35], [-1.0, 30.25], [-1.25, 30.35], [-1.5, 30.25], [-2.03, 30.47], [-2.18, 30.82], [-2.53, 30.97], [-2.68, 31.32], [-3.03, 31.47], [-3.25, 32.0]], [[-0.18, 33.68], [-0.12, 33.8], [-0.25, 33.85], [-0.32, 33.82], [-0.35, 33.75], [-0.32, 33.68], [-0.25, 33.65], [-0.18, 33.68]]]]}, "2015-11-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-3.25, 32.0], [-3.03, 32.53], [-2.68, 32.68], [-2.65, 32.75], [-2.68, 32.82], [-3.03, 32.97], [-3.25, 33.5], [-3.03, 34.03], [-2.68, 34.18], [-2.65, 34.25], [-2.75, 34.5], [-2.53, 35.03], [-2.0, 35.25], [-1.75, 35.15], [-1.5, 35.25], [-1.25, 35.15], [-1.0, 35.25], [-0.75, 35.15], [-0.68, 35.18], [-0.53, 35.53], [-0.18, 35.68], [-0.03, 36.03], [0.5, 36.25], [0.75, 36.15], [0.82, 36.18], [0.97, 36.53], [1.5, 36.75], [1.75, 36.65], [2.0, 36.75], [2.53, 36.53], [2.75, 36.0], [2.54, 35.5], [2.75, 35.0], [2.53, 34.47], [2.0, 34.25], [1.75, 34.35], [1.5, 34.25], [1.25, 34.35], [1.18, 34.32], [1.13, 34.2], [1.53, 34.03], [1.75, 33.5], [1.54, 33.0], [1.75, 32.5], [1.65, 32.25], [1.75, 32.0], [1.53, 31.47], [1.18, 31.32], [1.03, 30.97], [0.68, 30.82], [0.53, 30.47], [0.0, 30.25], [-0.25, 30.35], [-0.5, 30.25], [-0.75, 30.35], [-1.0, 30.25], [-1.25, 30.35], [-1.5, 30.25], [-2.03, 30.47], [-2.18, 30.82], [-2.53, 30.97], [-2.68, 31.32], [-3.03, 31.47], [-3.25, 32.0]], [[-0.18, 33.68], [-0.12, 33.8], [-0.25, 33.85], [-0.32, 33.82], [-0.35, 33.75], [-0.32, 33.68], [-0.25, 33.65], [-0.18, 33.68]]]]}, "2015-11-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-3.25, 32.0], [-3.03, 32.53], [-2.68, 32.68], [-2.65, 32.75], [-2.68, 32.82], [-3.03, 32.97], [-3.25, 33.5], [-3.03, 34.03], [-2.68, 34.18], [-2.65, 34.25], [-2.75, 34.5], [-2.53, 35.03], [-2.0, 35.25], [-1.75, 35.15], [-1.5, 35.25], [-1.25, 35.15], [-1.0, 35.25], [-0.75, 35.15], [-0.68, 35.18], [-0.53, 35.53], [-0.18, 35.68], [-0.03, 36.03], [0.5, 36.25], [0.75, 36.15], [0.82, 36.18], [0.97, 36.53], [1.5, 36.75], [1.75, 36.65], [2.0, 36.75], [2.53, 36.53], [2.75, 36.0], [2.54, 35.5], [2.75, 35.0], [2.53, 34.47], [2.0, 34.25], [1.75, 34.35], [1.5, 34.25], [1.25, 34.35], [1.18, 34.32], [1.13, 34.2], [1.53, 34.03], [1.75, 33.5], [1.54, 33.0], [1.75, 32.5], [1.65, 32.25], [1.75, 32.0], 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2.464541363843807, 3.711568745297427]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.8118028422616095, -5.38844841758718, -4.371689925830452]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.877788033028821, -6.40969031347106, -5.807679336518049]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4725085332910948, -2.11305763370497, -1.7934787337164395]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7911118442630047, -2.4547144871113638, -2.5374009697184245]}}