{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:34.514966", "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": "2012-Feb-04_to_2012-Feb-06_48.0_22.0"}, "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": 2012020000383}, "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": "February 04 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 06 2012"}, "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": 51705.71438467836}, "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": 22.0}, "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": 48.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "48.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 46.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 49.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 20.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 22.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-02-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.25, 22.0], [46.47, 22.53], [47.0, 22.75], [47.25, 22.65], [47.32, 22.68], [47.47, 23.03], [48.0, 23.25], [48.25, 23.15], [48.5, 23.25], [48.75, 23.15], [49.0, 23.25], [49.53, 23.03], [49.68, 22.68], [50.03, 22.53], [50.25, 22.0], [50.04, 21.5], [50.25, 21.0], [50.15, 20.75], [50.25, 20.5], [50.03, 19.97], [49.5, 19.75], [48.97, 19.97], [48.82, 20.32], [48.75, 20.35], [48.5, 20.25], [48.25, 20.35], [48.0, 20.25], [47.47, 20.47], [47.32, 20.82], [46.97, 20.97], [46.82, 21.32], [46.47, 21.47], [46.25, 22.0]]]]}, "2012-02-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.25, 22.0], [46.47, 22.53], [47.0, 22.75], [47.25, 22.65], [47.32, 22.68], [47.47, 23.03], [48.0, 23.25], [48.25, 23.15], [48.5, 23.25], [48.75, 23.15], [49.0, 23.25], [49.53, 23.03], [49.68, 22.68], [50.03, 22.53], [50.25, 22.0], [50.04, 21.5], [50.25, 21.0], [50.15, 20.75], [50.25, 20.5], [50.03, 19.97], [49.5, 19.75], [48.97, 19.97], [48.82, 20.32], [48.75, 20.35], [48.5, 20.25], [48.25, 20.35], [48.0, 20.25], [47.47, 20.47], [47.32, 20.82], [46.97, 20.97], [46.82, 21.32], [46.47, 21.47], [46.25, 22.0]]]]}, "2012-02-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.25, 22.0], [46.47, 22.53], [47.0, 22.75], [47.25, 22.65], [47.32, 22.68], [47.47, 23.03], [48.0, 23.25], [48.25, 23.15], [48.5, 23.25], [48.75, 23.15], [49.0, 23.25], [49.53, 23.03], [49.68, 22.68], [50.03, 22.53], [50.25, 22.0], [50.04, 21.5], [50.25, 21.0], [50.15, 20.75], [50.25, 20.5], [50.03, 19.97], [49.5, 19.75], [48.97, 19.97], [48.82, 20.32], [48.75, 20.35], [48.5, 20.25], [48.25, 20.35], [48.0, 20.25], [47.47, 20.47], [47.32, 20.82], [46.97, 20.97], [46.82, 21.32], [46.47, 21.47], [46.25, 22.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.420775172024321}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.138824850818053}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.456131830538084, 12.912227581592788, 13.373166620166046]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.432409366831223, 12.111076859413629, 12.577722490531528]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.6802259820822325, -5.1064576217525826, -4.629790948619343]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.420775172024321, -5.545591309304712, -4.98085471426316]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.505940119276191, -1.3476272667633702, -1.2265697264798405]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6533323213145377, -1.4228004500575413, -1.3472304209506654]}}