{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:05.554385", "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-Jan-16_to_2015-Jan-20_38.5_17.0"}, "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": 2015010000761}, "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": "January 16 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 20 2015"}, "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": 79579.60639592897}, "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": ["Eritrea", "Sudan"]}, "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": ["Red Sea"]}, "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": 17.0}, "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": 38.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "38.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 35.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 39.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 15.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 19.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-01-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.35, 17.75], [36.25, 18.0], [36.35, 18.25], [36.25, 18.5], 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[35.75, 16.5], [35.85, 16.75], [35.82, 16.82], [35.47, 16.97], [35.25, 17.5], [35.35, 17.75], [35.25, 18.0], [35.35, 18.25]], [[37.85, 16.75], [37.82, 16.82], [37.75, 16.85], [37.68, 16.82], [37.65, 16.75], [37.75, 16.5], [37.85, 16.75]]]]}, "2015-01-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.35, 18.25], [35.25, 18.5], [35.47, 19.03], [36.0, 19.25], [36.25, 19.15], [36.5, 19.25], [36.75, 19.15], [37.0, 19.25], [37.3, 19.13], [37.47, 19.53], [38.0, 19.75], [38.25, 19.65], [38.5, 19.75], [39.03, 19.53], [39.25, 19.0], [39.15, 18.75], [39.25, 18.5], [39.15, 18.25], [39.25, 18.0], [39.15, 17.75], [39.25, 17.5], [39.15, 17.25], [39.18, 17.18], [39.53, 17.03], [39.75, 16.5], [39.65, 16.25], [39.75, 16.0], [39.53, 15.47], [39.0, 15.25], [38.75, 15.35], [38.5, 15.25], [37.97, 15.47], [37.75, 16.0], [37.85, 16.25], [37.82, 16.32], [37.7, 16.38], [37.53, 15.97], [37.0, 15.75], [36.75, 15.85], [36.5, 15.75], [35.97, 15.97], [35.75, 16.5], [35.85, 16.75], [35.82, 16.82], [35.47, 16.97], [35.25, 17.5], [35.35, 17.75], [35.25, 18.0], [35.35, 18.25]]]]}, "2015-01-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.35, 18.25], [35.25, 18.5], [35.47, 19.03], [36.0, 19.25], [36.25, 19.15], [36.5, 19.25], [37.03, 19.03], [37.25, 18.5], [37.15, 18.25], [37.25, 18.0], [37.15, 17.75], [37.18, 17.68], [37.3, 17.63], [37.47, 18.03], [38.0, 18.25], [38.25, 18.15], [38.5, 18.25], [39.03, 18.03], [39.25, 17.5], [39.15, 17.25], [39.18, 17.18], [39.53, 17.03], [39.75, 16.5], [39.65, 16.25], [39.75, 16.0], [39.53, 15.47], [39.0, 15.25], [38.75, 15.35], [38.5, 15.25], [37.97, 15.47], [37.75, 16.0], [37.85, 16.25], [37.82, 16.32], [37.7, 16.38], [37.53, 15.97], [37.0, 15.75], [36.75, 15.85], [36.5, 15.75], [35.97, 15.97], [35.75, 16.5], [35.85, 16.75], [35.82, 16.82], [35.47, 16.97], [35.25, 17.5], [35.35, 17.75], [35.25, 18.0], [35.35, 18.25]]]]}, "2015-01-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.25, 17.0], [37.47, 17.53], [38.0, 17.75], [38.25, 17.65], [38.5, 17.75], [39.03, 17.53], [39.18, 17.18], [39.53, 17.03], [39.75, 16.5], [39.65, 16.25], [39.75, 16.0], [39.53, 15.47], [39.0, 15.25], [38.75, 15.35], [38.5, 15.25], [37.97, 15.47], [37.75, 16.0], [37.88, 16.3], [37.47, 16.47], [37.25, 17.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.113806713048916}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.6599732097158775}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.623514875636772, 19.506183769493816, 19.162379475204716, 18.80606940544834, 18.56053576153124]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.08121046550275, 14.955557837992842, 14.727012812393184, 15.3042337786394, 15.616816574406414]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.1947019805235812, -2.6053951265397273, -2.847415569931389, -2.766975672835937, -2.444177238314785]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.8194815634132055, -3.3891030591775007, -4.113806713048916, -3.3056251236819776, -2.8015614541374703]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2868898983499162, -1.3858086086803496, -1.6231117644177089, -1.5257635955955466, -1.6432741380599118]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.47247300612883, -1.7602225009192873, -2.0613792318281163, -2.180558762297465, -2.0819389825269243]}}