{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:10.651437", "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": "2011-Aug-29_to_2011-Sep-01_85.0_19.0"}, "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": 2011080001506}, "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": "August 29 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 01 2011"}, "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": 52657.66217736456}, "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": ["India"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.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": ["Bay of Bengal"]}, "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": 19.0}, "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": 85.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "85.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 83.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 86.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 17.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 20.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-08-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[84.47, 19.53], [84.82, 19.68], [84.97, 20.03], [85.5, 20.25], [86.03, 20.03], [86.25, 19.5], [86.15, 19.25], [86.25, 19.0], [86.15, 18.75], [86.18, 18.68], [86.53, 18.53], [86.75, 18.0], [86.53, 17.47], [86.0, 17.25], [85.75, 17.35], [85.5, 17.25], [84.97, 17.47], [84.82, 17.82], [84.47, 17.97], [84.25, 18.5], [84.35, 18.75], [84.25, 19.0], [84.47, 19.53]]]]}, "2011-08-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[82.97, 20.03], [83.5, 20.25], [84.0, 20.04], [84.32, 20.18], [84.47, 20.53], [85.0, 20.75], [85.53, 20.53], [85.68, 20.18], [86.03, 20.03], [86.25, 19.5], [86.15, 19.25], [86.25, 19.0], [86.15, 18.75], [86.18, 18.68], [86.53, 18.53], [86.75, 18.0], [86.53, 17.47], [86.0, 17.25], [85.75, 17.35], [85.5, 17.25], [85.25, 17.35], [85.0, 17.25], [84.75, 17.35], [84.5, 17.25], [83.97, 17.47], [83.82, 17.82], [83.47, 17.97], [83.32, 18.32], [82.97, 18.47], [82.75, 19.0], [82.85, 19.25], [82.75, 19.5], [82.97, 20.03]]]]}, "2011-08-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[82.97, 20.03], [83.5, 20.25], [84.0, 20.04], [84.32, 20.18], [84.47, 20.53], [85.0, 20.75], [85.53, 20.53], [85.68, 20.18], [86.03, 20.03], [86.25, 19.5], [86.15, 19.25], [86.25, 19.0], [86.15, 18.75], [86.18, 18.68], [86.53, 18.53], [86.75, 18.0], [86.53, 17.47], [86.0, 17.25], [85.75, 17.35], [85.5, 17.25], [85.25, 17.35], [85.0, 17.25], [84.75, 17.35], [84.5, 17.25], [83.97, 17.47], [83.82, 17.82], [83.47, 17.97], [83.32, 18.32], [82.97, 18.47], [82.75, 19.0], [82.85, 19.25], [82.75, 19.5], [82.97, 20.03]]]]}, "2011-09-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[82.97, 20.03], [83.5, 20.25], [84.0, 20.04], [84.32, 20.18], [84.47, 20.53], [85.0, 20.75], [85.53, 20.53], [85.68, 20.18], [86.03, 20.03], [86.25, 19.5], [86.15, 19.25], [86.25, 19.0], [86.15, 18.75], [86.25, 18.5], [86.03, 17.97], [85.68, 17.82], [85.53, 17.47], [85.0, 17.25], [84.75, 17.35], [84.5, 17.25], [83.97, 17.47], [83.82, 17.82], [83.47, 17.97], [83.32, 18.32], [82.97, 18.47], [82.75, 19.0], [82.85, 19.25], [82.75, 19.5], [82.97, 20.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.8789162545013482}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.3040774118217444}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.00755782990109, 26.448761768813768, 26.41407325545805, 26.613394075294764]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.82392966319577, 24.051736324072976, 24.115865372088535, 24.046552672266955]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3180070667871746, -1.3000143078950797, -1.4020796444005126, -1.192301668040752]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.4803866866181465, -1.8587556341742015, -1.8789162545013482, -1.7428713538810143]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.036919137183504, -1.6813164627458972, -1.819703554257549, -1.5268160496002405]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2741876255093456, -1.996325336460283, -2.1500585889681547, -1.8037006713278418]}}