{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:51.121368", "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-Nov-30_to_2012-Dec-02_85.5_35.0"}, "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": 2012110001166}, "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": "November 30 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 02 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": 60998.397778834245}, "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": ["China"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Tibetan-Plateau"]}, "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": 35.0}, "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": 85.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "85.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 83.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 89.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 33.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 35.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-11-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[83.25, 34.5], [83.47, 35.03], [83.88, 35.2], [83.75, 35.5], [83.97, 36.03], [84.5, 36.25], [85.03, 36.03], [85.18, 35.68], [85.25, 35.65], [85.5, 35.75], [86.0, 35.54], [86.5, 35.75], [86.75, 35.65], [87.0, 35.75], [87.25, 35.65], [87.32, 35.68], [87.47, 36.03], [88.0, 36.25], [88.25, 36.15], [88.5, 36.25], [88.75, 36.15], [89.0, 36.25], [89.53, 36.03], [89.75, 35.5], [89.53, 34.97], [89.0, 34.75], [88.75, 34.85], [88.68, 34.82], [88.65, 34.75], [88.75, 34.5], [88.53, 33.97], [88.18, 33.82], [88.03, 33.47], [87.5, 33.25], [86.97, 33.47], [86.82, 33.82], [86.75, 33.85], [86.68, 33.82], [86.53, 33.47], [86.0, 33.25], [85.75, 33.35], [85.5, 33.25], [85.25, 33.35], [85.0, 33.25], [84.75, 33.35], [84.5, 33.25], [83.97, 33.47], [83.82, 33.82], [83.47, 33.97], [83.25, 34.5]]]]}, "2012-12-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[83.25, 34.5], [83.47, 35.03], [83.88, 35.2], [83.75, 35.5], [83.97, 36.03], [84.5, 36.25], [85.03, 36.03], [85.18, 35.68], [85.25, 35.65], [85.5, 35.75], [86.0, 35.54], [86.5, 35.75], [86.75, 35.65], [87.0, 35.75], [87.25, 35.65], [87.32, 35.68], [87.47, 36.03], [88.0, 36.25], [88.25, 36.15], [88.5, 36.25], [88.75, 36.15], [89.0, 36.25], [89.53, 36.03], [89.75, 35.5], [89.53, 34.97], [89.0, 34.75], [88.75, 34.85], [88.68, 34.82], [88.65, 34.75], [88.75, 34.5], [88.53, 33.97], [88.18, 33.82], [88.03, 33.47], [87.5, 33.25], [86.97, 33.47], [86.82, 33.82], [86.75, 33.85], [86.68, 33.82], [86.53, 33.47], [86.0, 33.25], [85.75, 33.35], [85.5, 33.25], [85.25, 33.35], [85.0, 33.25], [84.75, 33.35], [84.5, 33.25], [83.97, 33.47], [83.82, 33.82], [83.47, 33.97], [83.25, 34.5]]]]}, "2012-12-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[83.25, 34.5], [83.47, 35.03], [83.88, 35.2], [83.75, 35.5], [83.97, 36.03], [84.5, 36.25], [85.03, 36.03], [85.18, 35.68], [85.25, 35.65], [85.5, 35.75], [86.0, 35.54], [86.5, 35.75], [86.75, 35.65], [87.0, 35.75], [87.25, 35.65], [87.32, 35.68], [87.47, 36.03], [88.0, 36.25], [88.25, 36.15], [88.5, 36.25], [88.75, 36.15], [89.0, 36.25], [89.53, 36.03], [89.75, 35.5], [89.53, 34.97], [89.0, 34.75], [88.75, 34.85], [88.68, 34.82], [88.65, 34.75], [88.75, 34.5], [88.53, 33.97], [88.18, 33.82], [88.03, 33.47], [87.5, 33.25], [86.97, 33.47], [86.82, 33.82], [86.75, 33.85], [86.68, 33.82], [86.53, 33.47], [86.0, 33.25], [85.75, 33.35], [85.5, 33.25], [85.25, 33.35], [85.0, 33.25], [84.75, 33.35], [84.5, 33.25], [83.97, 33.47], [83.82, 33.82], [83.47, 33.97], [83.25, 34.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.897427955655445}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.471653453980803}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-20.585567581183255, -21.004701948487394, -19.776670562223586]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-24.27748114898111, -23.950460256707544, -24.117763098958108]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.585134169849617, -6.0274908880813785, -4.802335304011419]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.18273840970079, -8.897427955655445, -6.423027267994314]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7906499019739137, -1.8682225149706602, -1.4582330638729235]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.515647139413049, -2.5931792159264657, -1.8306721371550598]}}