{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:30:16.194412", "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": "2022-Mar-14_to_2022-Mar-16_352.0_30.5"}, "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": 2022030000471}, "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": "March 14 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 16 2022"}, "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": 161011.17775827358}, "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", "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": ["North 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": 30.5}, "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": 352.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "352.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 349.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 354.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 27.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 34.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-03-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-10.75, 29.0], [-10.53, 29.53], [-10.18, 29.68], [-10.15, 29.75], [-10.25, 30.0], [-10.15, 30.25], [-10.25, 30.5], [-10.15, 30.75], [-10.25, 31.0], [-10.15, 31.25], [-10.25, 31.5], [-10.03, 32.03], [-9.68, 32.18], [-9.53, 32.53], [-9.18, 32.68], [-9.15, 32.75], [-9.25, 33.0], [-9.15, 33.25], [-9.25, 33.5], [-9.03, 34.03], [-8.68, 34.18], [-8.53, 34.53], [-8.0, 34.75], [-7.75, 34.65], [-7.5, 34.75], [-7.25, 34.65], [-7.0, 34.75], [-6.75, 34.65], [-6.68, 34.68], [-6.53, 35.03], [-6.0, 35.25], [-5.47, 35.03], [-5.25, 34.5], [-5.35, 34.25], [-5.25, 34.0], [-5.35, 33.75], [-5.25, 33.5], [-5.47, 32.97], [-5.82, 32.82], [-5.85, 32.75], [-5.75, 32.5], [-5.97, 31.97], [-6.32, 31.82], [-6.47, 31.47], [-6.82, 31.32], [-6.96, 31.0], [-6.75, 30.5], [-6.85, 30.25], [-6.75, 30.0], [-6.97, 29.47], [-7.32, 29.32], [-7.35, 29.25], [-7.25, 29.0], [-7.35, 28.75], [-7.25, 28.5], [-7.47, 27.97], [-7.82, 27.82], [-7.97, 27.47], [-8.5, 27.25], [-8.75, 27.35], [-9.0, 27.25], [-9.53, 27.47], [-9.68, 27.82], [-10.03, 27.97], [-10.18, 28.32], [-10.53, 28.47], [-10.75, 29.0]]]]}, "2022-03-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-10.75, 29.0], [-10.53, 29.53], [-10.18, 29.68], [-10.15, 29.75], [-10.25, 30.0], [-10.15, 30.25], [-10.25, 30.5], [-10.15, 30.75], [-10.25, 31.0], [-10.15, 31.25], [-10.25, 31.5], [-10.03, 32.03], [-9.68, 32.18], [-9.53, 32.53], [-9.18, 32.68], [-9.15, 32.75], [-9.25, 33.0], [-9.15, 33.25], [-9.25, 33.5], [-9.03, 34.03], [-8.68, 34.18], [-8.53, 34.53], [-8.0, 34.75], [-7.75, 34.65], [-7.5, 34.75], [-7.25, 34.65], [-7.0, 34.75], [-6.75, 34.65], [-6.68, 34.68], [-6.53, 35.03], [-6.0, 35.25], [-5.47, 35.03], [-5.25, 34.5], [-5.35, 34.25], [-5.25, 34.0], [-5.35, 33.75], [-5.25, 33.5], [-5.47, 32.97], [-5.82, 32.82], [-5.85, 32.75], [-5.75, 32.5], [-5.97, 31.97], [-6.32, 31.82], [-6.47, 31.47], [-6.82, 31.32], [-6.96, 31.0], [-6.75, 30.5], [-6.85, 30.25], [-6.75, 30.0], [-6.97, 29.47], [-7.32, 29.32], [-7.35, 29.25], [-7.25, 29.0], [-7.35, 28.75], [-7.25, 28.5], [-7.47, 27.97], [-7.82, 27.82], [-7.97, 27.47], [-8.5, 27.25], [-8.75, 27.35], [-9.0, 27.25], [-9.53, 27.47], [-9.68, 27.82], [-10.03, 27.97], [-10.18, 28.32], [-10.53, 28.47], [-10.75, 29.0]]]]}, "2022-03-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-10.75, 29.0], [-10.53, 29.53], [-10.18, 29.68], [-10.15, 29.75], [-10.25, 30.0], [-10.15, 30.25], [-10.25, 30.5], [-10.15, 30.75], [-10.25, 31.0], [-10.15, 31.25], [-10.25, 31.5], [-10.03, 32.03], [-9.68, 32.18], [-9.53, 32.53], [-9.18, 32.68], [-9.15, 32.75], [-9.25, 33.0], [-9.15, 33.25], [-9.25, 33.5], [-9.03, 34.03], [-8.68, 34.18], [-8.53, 34.53], [-8.0, 34.75], [-7.75, 34.65], [-7.5, 34.75], [-7.25, 34.65], [-7.0, 34.75], [-6.75, 34.65], [-6.68, 34.68], [-6.53, 35.03], [-6.0, 35.25], [-5.47, 35.03], [-5.25, 34.5], [-5.35, 34.25], [-5.25, 34.0], [-5.35, 33.75], [-5.25, 33.5], [-5.47, 32.97], [-5.82, 32.82], [-5.85, 32.75], [-5.75, 32.5], [-5.97, 31.97], [-6.32, 31.82], [-6.47, 31.47], [-6.82, 31.32], [-6.96, 31.0], [-6.75, 30.5], [-6.85, 30.25], [-6.75, 30.0], [-6.97, 29.47], [-7.32, 29.32], [-7.35, 29.25], [-7.25, 29.0], [-7.35, 28.75], [-7.25, 28.5], [-7.47, 27.97], [-7.82, 27.82], [-7.97, 27.47], [-8.5, 27.25], [-8.75, 27.35], [-9.0, 27.25], [-9.53, 27.47], [-9.68, 27.82], [-10.03, 27.97], [-10.18, 28.32], [-10.53, 28.47], [-10.75, 29.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.232850526841958}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.267352711765604}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [11.156622055897287, 9.549574214935433, 11.560654615590352]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [2.099762273531951, -0.15669204413637772, 1.1794889514017655]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.8020531247977, -6.477356129475346, -4.52264888102377]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.01221340779307, -9.232850526841958, -6.707277792462378]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.778047728306987, -2.3526567839831003, -1.604545606354468]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.6182391549692694, -3.358172842094092, -2.1623434484359403]}}