{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:20:39.386785", "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": "2020-Jul-08_to_2020-Jul-12_356.5_23.0"}, "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": 2020070000356}, "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": "July 08 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 12 2020"}, "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": 96360.35101182401}, "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", "Mali", "Mauritania"]}, "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": 23.0}, "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": 356.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "356.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 353.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 358.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 20.75}, "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": {"2020-07-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-3.25, 25.5], [-3.03, 26.03], [-2.5, 26.25], [-2.25, 26.15], [-2.0, 26.25], [-1.75, 26.15], [-1.5, 26.25], [-0.97, 26.03], [-0.75, 25.5], [-0.97, 24.97], [-1.32, 24.82], [-1.47, 24.47], [-2.0, 24.25], [-2.53, 24.47], [-2.68, 24.82], [-3.03, 24.97], [-3.25, 25.5]]]]}, "2020-07-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.68, 23.68], [-4.65, 23.75], [-4.75, 24.0], [-4.65, 24.25], [-4.75, 24.5], [-4.53, 25.03], [-4.18, 25.18], [-4.15, 25.25], [-4.25, 25.5], [-4.03, 26.03], [-3.5, 26.25], [-3.25, 26.15], [-3.0, 26.25], [-2.75, 26.15], [-2.5, 26.25], [-2.25, 26.15], [-2.0, 26.25], [-1.75, 26.15], [-1.5, 26.25], [-0.97, 26.03], [-0.75, 25.5], [-0.97, 24.97], [-1.32, 24.82], [-1.47, 24.47], [-2.0, 24.25], [-2.3, 24.38], [-2.35, 24.25], [-2.25, 24.0], [-2.47, 23.47], [-2.82, 23.32], [-2.85, 23.25], [-2.75, 23.0], [-2.97, 22.47], [-3.32, 22.32], [-3.47, 21.97], [-4.0, 21.75], [-4.25, 21.85], [-4.5, 21.75], [-4.75, 21.85], [-5.0, 21.75], [-5.53, 21.97], [-5.75, 22.5], [-5.53, 23.03], [-5.18, 23.18], [-5.03, 23.53], [-4.68, 23.68]]]]}, "2020-07-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-6.18, 22.18], [-6.03, 22.53], [-5.68, 22.68], [-5.54, 23.0], [-5.75, 23.5], [-5.65, 23.75], [-5.75, 24.0], [-5.53, 24.53], [-5.0, 24.75], [-4.7, 24.62], [-4.65, 24.75], [-4.75, 25.0], [-4.53, 25.53], [-4.18, 25.68], [-4.03, 26.03], [-3.5, 26.25], [-3.25, 26.15], [-3.0, 26.25], [-2.75, 26.15], [-2.5, 26.25], [-2.25, 26.15], [-2.0, 26.25], [-1.75, 26.15], [-1.5, 26.25], [-0.97, 26.03], [-0.75, 25.5], [-0.97, 24.97], [-1.32, 24.82], [-1.47, 24.47], [-2.0, 24.25], [-2.3, 24.38], [-2.35, 24.25], [-2.25, 24.0], [-2.47, 23.47], [-2.82, 23.32], [-2.85, 23.25], [-2.75, 23.0], [-2.97, 22.47], [-3.32, 22.32], [-3.35, 22.25], [-3.25, 22.0], [-3.47, 21.47], [-4.0, 21.25], [-4.25, 21.35], [-4.32, 21.32], [-4.47, 20.97], [-5.0, 20.75], [-5.25, 20.85], [-5.32, 20.82], [-5.47, 20.47], [-6.0, 20.25], [-6.25, 20.35], [-6.5, 20.25], [-7.03, 20.47], [-7.25, 21.0], [-7.03, 21.53], [-6.68, 21.68], [-6.53, 22.03], [-6.18, 22.18]]]]}, "2020-07-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-6.18, 22.18], [-6.03, 22.53], [-5.68, 22.68], [-5.54, 23.0], [-5.75, 23.5], [-5.65, 23.75], [-5.75, 24.0], [-5.53, 24.53], [-5.0, 24.75], [-4.7, 24.62], [-4.65, 24.75], [-4.75, 25.0], [-4.53, 25.53], [-4.18, 25.68], [-4.03, 26.03], [-3.5, 26.25], [-3.25, 26.15], [-3.0, 26.25], [-2.75, 26.15], [-2.5, 26.25], [-2.25, 26.15], [-2.0, 26.25], [-1.75, 26.15], [-1.5, 26.25], [-0.97, 26.03], [-0.75, 25.5], [-0.97, 24.97], [-1.32, 24.82], [-1.47, 24.47], [-2.0, 24.25], [-2.3, 24.38], [-2.35, 24.25], [-2.25, 24.0], [-2.47, 23.47], [-2.82, 23.32], [-2.85, 23.25], [-2.75, 23.0], [-2.97, 22.47], [-3.32, 22.32], [-3.35, 22.25], [-3.25, 22.0], [-3.47, 21.47], [-4.0, 21.25], [-4.25, 21.35], [-4.32, 21.32], [-4.47, 20.97], [-5.0, 20.75], [-5.25, 20.85], [-5.32, 20.82], [-5.47, 20.47], [-6.0, 20.25], [-6.25, 20.35], [-6.5, 20.25], [-7.03, 20.47], [-7.25, 21.0], [-7.03, 21.53], [-6.68, 21.68], [-6.53, 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amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.383779812540183}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.3697686522078762}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [35.454316196118896, 35.85677358247227, 35.86413907162097, 35.3417344822069, 35.36663414455052]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [35.30585956384982, 35.02047486156738, 34.66803024403981, 34.267444377533195, 33.55706535092821]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.9447877154181157, -2.1198576706722956, -2.0869938038522644, -2.624963032244971, -2.6322106284585662]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily 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