{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:01:51.806174", "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": "2014-Dec-08_to_2014-Dec-10_63.0_31.0"}, "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": 2014120000427}, "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": "December 08 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 10 2014"}, "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": 58258.53990715962}, "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": ["Afghanistan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.C.Asia"]}, "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": 31.0}, "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": 63.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "63.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 61.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 64.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 29.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 32.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-12-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[60.97, 32.53], [61.32, 32.68], [61.47, 33.03], [62.0, 33.25], [62.53, 33.03], [62.7, 32.63], [63.0, 32.75], [63.53, 32.53], [63.75, 32.0], [63.65, 31.75], [63.68, 31.68], [63.75, 31.65], [64.0, 31.75], [64.25, 31.65], [64.5, 31.75], [65.03, 31.53], [65.25, 31.0], [65.15, 30.75], [65.25, 30.5], [65.03, 29.97], [64.5, 29.75], [64.25, 29.85], [64.18, 29.82], [64.03, 29.47], [63.5, 29.25], [63.25, 29.35], [63.0, 29.25], [62.75, 29.35], [62.5, 29.25], [61.97, 29.47], [61.82, 29.82], [61.47, 29.97], [61.25, 30.5], [61.35, 30.75], [61.32, 30.82], [60.97, 30.97], [60.75, 31.5], [60.85, 31.75], [60.75, 32.0], [60.97, 32.53]]]]}, "2014-12-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[60.97, 32.53], [61.32, 32.68], [61.47, 33.03], [62.0, 33.25], [62.53, 33.03], [62.7, 32.63], [63.0, 32.75], [63.53, 32.53], [63.75, 32.0], [63.65, 31.75], [63.68, 31.68], [63.75, 31.65], [64.0, 31.75], [64.25, 31.65], [64.5, 31.75], [65.03, 31.53], [65.25, 31.0], [65.15, 30.75], [65.25, 30.5], [65.03, 29.97], [64.5, 29.75], [64.25, 29.85], [64.18, 29.82], [64.03, 29.47], [63.5, 29.25], [63.25, 29.35], [63.0, 29.25], [62.75, 29.35], [62.5, 29.25], [61.97, 29.47], [61.82, 29.82], [61.47, 29.97], [61.25, 30.5], [61.35, 30.75], [61.32, 30.82], [60.97, 30.97], [60.75, 31.5], [60.85, 31.75], [60.75, 32.0], [60.97, 32.53]]]]}, "2014-12-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[60.97, 32.53], [61.32, 32.68], [61.47, 33.03], [62.0, 33.25], [62.53, 33.03], [62.7, 32.63], [63.0, 32.75], [63.53, 32.53], [63.75, 32.0], [63.65, 31.75], [63.68, 31.68], [63.75, 31.65], [64.0, 31.75], [64.25, 31.65], [64.5, 31.75], [65.03, 31.53], [65.25, 31.0], [65.15, 30.75], [65.25, 30.5], [65.03, 29.97], [64.5, 29.75], [64.25, 29.85], [64.18, 29.82], [64.03, 29.47], [63.5, 29.25], [63.25, 29.35], [63.0, 29.25], [62.75, 29.35], [62.5, 29.25], [61.97, 29.47], [61.82, 29.82], [61.47, 29.97], [61.25, 30.5], [61.35, 30.75], [61.32, 30.82], [60.97, 30.97], [60.75, 31.5], [60.85, 31.75], [60.75, 32.0], [60.97, 32.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.22664739750121}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.216066643971145}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [4.09792651091152, 3.641957161646019, 5.164137294919442]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [2.9449981981902056, 2.2189929271260667, 3.911251907985502]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.6024715223752715, -6.840511374530386, -5.205217035007778]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.702038395145166, -8.22664739750121, -6.3188699536570425]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6217340575731465, -1.7181551418537921, -1.312536702449471]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8309726533903063, -2.0206741141620648, -1.4802671666362512]}}