{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:44:05.179171", "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": "2010-Feb-08_to_2010-Feb-10_56.0_21.5"}, "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": 2010020000274}, "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 08 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 10 2010"}, "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": 112665.40905770907}, "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": ["Oman", "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": 21.5}, "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": 56.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "56.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 52.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 57.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 19.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 23.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-02-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[52.25, 20.0], [52.47, 20.53], [52.82, 20.68], [52.97, 21.03], [53.5, 21.25], [53.75, 21.15], [53.82, 21.18], [53.85, 21.25], [53.75, 21.5], [53.97, 22.03], [54.5, 22.25], [54.75, 22.15], [54.82, 22.18], [54.97, 22.53], [55.32, 22.68], [55.47, 23.03], [56.0, 23.25], [56.25, 23.15], [56.32, 23.18], [56.47, 23.53], [57.0, 23.75], [57.53, 23.53], [57.75, 23.0], [57.53, 22.47], [57.18, 22.32], [57.15, 22.25], [57.18, 22.18], [57.25, 22.15], [57.5, 22.25], [58.03, 22.03], [58.25, 21.5], [58.15, 21.25], [58.25, 21.0], [58.03, 20.47], [57.68, 20.32], [57.65, 20.25], [57.75, 20.0], [57.65, 19.75], [57.75, 19.5], [57.53, 18.97], [57.0, 18.75], [56.75, 18.85], [56.5, 18.75], [55.97, 18.97], [55.8, 19.38], [55.5, 19.25], [55.25, 19.35], [55.18, 19.32], [55.03, 18.97], [54.5, 18.75], [54.25, 18.85], [54.0, 18.75], [53.75, 18.85], [53.5, 18.75], [52.97, 18.97], [52.82, 19.32], [52.47, 19.47], [52.25, 20.0]]]]}, "2010-02-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[52.25, 20.0], [52.47, 20.53], [52.82, 20.68], [52.97, 21.03], [53.5, 21.25], [53.75, 21.15], [53.82, 21.18], [53.85, 21.25], [53.75, 21.5], [53.97, 22.03], [54.5, 22.25], [54.75, 22.15], [54.82, 22.18], [54.97, 22.53], [55.32, 22.68], [55.47, 23.03], [56.0, 23.25], [56.25, 23.15], [56.32, 23.18], [56.47, 23.53], [57.0, 23.75], [57.53, 23.53], [57.75, 23.0], [57.53, 22.47], [57.18, 22.32], [57.15, 22.25], [57.18, 22.18], [57.25, 22.15], [57.5, 22.25], [58.03, 22.03], [58.25, 21.5], [58.15, 21.25], [58.25, 21.0], [58.03, 20.47], [57.68, 20.32], [57.65, 20.25], [57.75, 20.0], [57.65, 19.75], [57.75, 19.5], [57.53, 18.97], [57.0, 18.75], [56.75, 18.85], [56.5, 18.75], [55.97, 18.97], [55.8, 19.38], [55.5, 19.25], [55.25, 19.35], [55.18, 19.32], [55.03, 18.97], [54.5, 18.75], [54.25, 18.85], [54.0, 18.75], [53.75, 18.85], [53.5, 18.75], [52.97, 18.97], [52.82, 19.32], [52.47, 19.47], [52.25, 20.0]]]]}, "2010-02-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[52.25, 20.0], [52.47, 20.53], [52.82, 20.68], [52.97, 21.03], [53.5, 21.25], 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{"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.327970755466452}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.26581647905016, 16.232462093595814, 17.348480934241138]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.260592184256495, 14.956194238365583, 15.939631625209415]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.624986578058015, -4.734272591329518, -3.624653097011824]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.020338494443763, -5.643742819227782, -4.8615935996705275]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9055340778450263, -2.0096113208816826, -1.5255911715933157]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.325356729130923, -2.494227622432778, -1.954372843035337]}}