{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:32:22.788636", "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-Sep-29_to_2022-Oct-02_42.0_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": 2022090001008}, "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": "September 29 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 02 2022"}, "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": 58442.63161148047}, "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": ["Saudi Arabia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Arabian-Peninsula"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "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": 42.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "42.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 39.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 42.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 24.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 27.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-09-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.0, 27.75], [40.25, 27.65], [40.32, 27.68], [40.47, 28.03], [41.0, 28.25], [41.53, 28.03], [41.75, 27.5], [41.65, 27.25], [41.75, 27.0], [41.53, 26.47], [41.0, 26.25], [40.75, 26.35], [40.68, 26.32], [40.53, 25.97], [40.0, 25.75], [39.75, 25.85], [39.5, 25.75], [38.97, 25.97], [38.75, 26.5], [38.97, 27.03], [39.32, 27.18], [39.47, 27.53], [40.0, 27.75]]]]}, "2022-09-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.75, 26.5], [38.97, 27.03], [39.32, 27.18], [39.47, 27.53], [40.0, 27.75], [40.25, 27.65], [40.32, 27.68], [40.47, 28.03], [41.0, 28.25], [41.53, 28.03], [41.75, 27.5], [41.65, 27.25], [41.75, 27.0], [41.63, 26.7], [42.03, 26.53], [42.18, 26.18], [42.53, 26.03], [42.68, 25.68], [43.03, 25.53], [43.25, 25.0], [43.03, 24.47], [42.68, 24.32], [42.53, 23.97], [42.0, 23.75], [41.75, 23.85], [41.5, 23.75], [40.97, 23.97], [40.82, 24.32], [40.75, 24.35], [40.5, 24.25], [39.97, 24.47], [39.82, 24.82], [39.47, 24.97], [39.25, 25.5], [39.35, 25.75], [39.32, 25.82], [38.97, 25.97], [38.75, 26.5]]]]}, "2022-10-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.75, 26.5], [38.97, 27.03], [39.32, 27.18], [39.47, 27.53], [40.0, 27.75], [40.25, 27.65], [40.32, 27.68], [40.47, 28.03], [41.0, 28.25], [41.53, 28.03], [41.75, 27.5], [41.65, 27.25], [41.75, 27.0], [41.63, 26.7], [42.03, 26.53], [42.18, 26.18], [42.53, 26.03], [42.68, 25.68], [43.03, 25.53], [43.25, 25.0], [43.03, 24.47], [42.68, 24.32], [42.53, 23.97], [42.0, 23.75], [41.75, 23.85], [41.5, 23.75], [40.97, 23.97], [40.82, 24.32], [40.75, 24.35], [40.5, 24.25], [39.97, 24.47], [39.82, 24.82], [39.47, 24.97], [39.25, 25.5], [39.35, 25.75], [39.32, 25.82], [38.97, 25.97], [38.75, 26.5]]]]}, "2022-10-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.47, 26.53], [40.0, 26.75], [40.25, 26.65], [40.5, 26.75], [40.75, 26.65], [41.0, 26.75], [41.25, 26.65], [41.5, 26.75], [42.03, 26.53], [42.18, 26.18], [42.53, 26.03], [42.68, 25.68], [43.03, 25.53], [43.25, 25.0], [43.03, 24.47], [42.68, 24.32], [42.53, 23.97], [42.0, 23.75], [41.75, 23.85], [41.5, 23.75], [40.97, 23.97], [40.82, 24.32], [40.75, 24.35], [40.5, 24.25], [39.97, 24.47], [39.82, 24.82], [39.47, 24.97], [39.25, 25.5], [39.35, 25.75], [39.25, 26.0], [39.47, 26.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.6562745518940574}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.794434758222966}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.49342264449109, 26.897910020882875, 26.487090812972667, 27.34653910898163]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.80789631310506, 25.002229024666406, 24.570199900490024, 25.97006924800803]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.874521103068967, -2.7634380702484638, -2.991828330954396, -2.5294445816248676]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.6562745518940574, -3.503707414548387, -3.5282877881353443, -3.0164670677835375]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.64573954387499, -1.8480092294011297, -2.0205339610028537, -1.8034984721323861]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9071532531059587, -2.2253526892495663, -2.568149017065382, -2.180688545517786]}}