{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:54:10.530460", "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": "2013-Aug-27_to_2013-Aug-31_81.5_24.5"}, "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": 2013080001238}, "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 27 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 31 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 241496.2278252006}, "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": []}, "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": 24.5}, "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": 81.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "81.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 78.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 84.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 20.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 27.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-08-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.25, 24.5], [79.47, 25.03], [79.82, 25.18], [79.85, 25.25], [79.75, 25.5], [79.85, 25.75], [79.75, 26.0], [79.97, 26.53], [80.38, 26.7], [80.25, 27.0], [80.47, 27.53], [81.0, 27.75], [81.53, 27.53], [81.68, 27.18], [81.75, 27.15], [82.0, 27.25], [82.25, 27.15], [82.5, 27.25], [82.75, 27.15], [83.0, 27.25], [83.25, 27.15], [83.5, 27.25], [84.03, 27.03], [84.25, 26.5], [84.15, 26.25], [84.25, 26.0], [84.15, 25.75], [84.25, 25.5], [84.04, 25.0], [84.25, 24.5], [84.15, 24.25], [84.25, 24.0], [84.13, 23.7], [84.25, 23.65], [84.5, 23.75], [85.03, 23.53], [85.25, 23.0], [85.15, 22.75], [85.25, 22.5], [85.03, 21.97], [84.5, 21.75], [84.25, 21.85], [84.0, 21.75], [83.5, 21.96], [83.0, 21.75], [82.75, 21.85], [82.68, 21.82], [82.65, 21.75], [82.75, 21.5], [82.65, 21.25], [82.75, 21.0], [82.53, 20.47], [82.0, 20.25], [81.47, 20.47], [81.32, 20.82], [80.97, 20.97], [80.75, 21.5], [80.88, 21.8], [80.75, 21.85], [80.5, 21.75], [79.97, 21.97], [79.75, 22.5], [79.85, 22.75], [79.75, 23.0], [79.96, 23.5], [79.82, 23.82], [79.47, 23.97], [79.25, 24.5]]]]}, "2013-08-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[78.35, 25.25], [78.25, 25.5], [78.35, 25.75], [78.25, 26.0], [78.35, 26.25], [78.25, 26.5], [78.35, 26.75], [78.25, 27.0], [78.35, 27.25], [78.25, 27.5], [78.47, 28.03], [79.0, 28.25], [79.53, 28.03], [79.68, 27.68], [79.75, 27.65], [80.0, 27.75], [80.25, 27.65], [80.5, 27.75], [80.75, 27.65], [81.0, 27.75], [81.53, 27.53], [81.68, 27.18], [81.75, 27.15], [82.0, 27.25], [82.25, 27.15], [82.5, 27.25], [82.75, 27.15], [83.0, 27.25], [83.25, 27.15], [83.5, 27.25], [84.03, 27.03], [84.25, 26.5], [84.15, 26.25], [84.25, 26.0], [84.15, 25.75], [84.25, 25.5], [84.04, 25.0], [84.25, 24.5], [84.15, 24.25], [84.25, 24.0], [84.13, 23.7], [84.25, 23.65], [84.5, 23.75], [85.03, 23.53], [85.25, 23.0], [85.15, 22.75], [85.25, 22.5], [85.03, 21.97], [84.5, 21.75], [84.25, 21.85], [84.0, 21.75], [83.5, 21.96], [83.0, 21.75], [82.75, 21.85], [82.68, 21.82], [82.65, 21.75], [82.75, 21.5], [82.65, 21.25], [82.75, 21.0], [82.53, 20.47], [82.0, 20.25], [81.47, 20.47], [81.32, 20.82], [80.97, 20.97], [80.75, 21.5], [80.88, 21.8], [80.75, 21.85], [80.5, 21.75], [79.97, 21.97], [79.75, 22.5], [79.85, 22.75], [79.75, 23.0], [79.96, 23.5], [79.82, 23.82], [79.75, 23.85], [79.5, 23.75], [79.25, 23.85], [79.0, 23.75], [78.47, 23.97], [78.25, 24.5], [78.35, 24.75], [78.25, 25.0], [78.35, 25.25]]]]}, "2013-08-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[78.35, 25.25], [78.25, 25.5], [78.35, 25.75], [78.25, 26.0], [78.35, 26.25], [78.25, 26.5], [78.35, 26.75], [78.25, 27.0], [78.35, 27.25], [78.25, 27.5], [78.47, 28.03], [79.0, 28.25], [79.53, 28.03], [79.68, 27.68], [79.75, 27.65], [80.0, 27.75], [80.25, 27.65], [80.5, 27.75], [80.75, 27.65], [81.0, 27.75], [81.53, 27.53], [81.68, 27.18], [81.75, 27.15], [82.0, 27.25], [82.25, 27.15], [82.5, 27.25], [82.75, 27.15], [83.0, 27.25], [83.25, 27.15], [83.5, 27.25], [84.03, 27.03], [84.25, 26.5], [84.15, 26.25], [84.25, 26.0], [84.15, 25.75], [84.25, 25.5], [84.04, 25.0], [84.25, 24.5], [84.15, 24.25], [84.25, 24.0], [84.13, 23.7], [84.25, 23.65], [84.5, 23.75], [85.03, 23.53], [85.25, 23.0], [85.15, 22.75], [85.25, 22.5], [85.03, 21.97], [84.5, 21.75], [84.25, 21.85], [84.0, 21.75], [83.5, 21.96], [83.0, 21.75], [82.75, 21.85], [82.68, 21.82], [82.65, 21.75], [82.75, 21.5], [82.65, 21.25], [82.75, 21.0], [82.53, 20.47], [82.0, 20.25], [81.47, 20.47], [81.32, 20.82], [80.97, 20.97], [80.75, 21.5], [80.88, 21.8], [80.75, 21.85], [80.5, 21.75], [79.97, 21.97], [79.75, 22.5], [79.85, 22.75], [79.75, 23.0], [79.96, 23.5], [79.82, 23.82], [79.75, 23.85], [79.5, 23.75], [79.25, 23.85], [79.0, 23.75], [78.47, 23.97], [78.25, 24.5], [78.35, 24.75], [78.25, 25.0], [78.35, 25.25]]]]}, "2013-08-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[78.35, 25.25], [78.25, 25.5], [78.35, 25.75], [78.25, 26.0], [78.35, 26.25], [78.25, 26.5], [78.35, 26.75], [78.25, 27.0], [78.35, 27.25], [78.25, 27.5], [78.47, 28.03], [79.0, 28.25], [79.53, 28.03], [79.68, 27.68], [79.75, 27.65], [80.0, 27.75], [80.25, 27.65], [80.5, 27.75], [81.03, 27.53], [81.2, 27.13], [81.5, 27.25], [82.03, 27.03], [82.25, 26.5], [82.15, 26.25], [82.25, 26.0], [82.15, 25.75], [82.18, 25.68], [82.53, 25.53], [82.68, 25.18], [82.75, 25.15], [83.0, 25.25], [83.53, 25.03], [83.75, 24.5], [83.65, 24.25], [83.75, 24.0], [83.57, 23.57], [84.0, 23.75], [84.53, 23.53], [84.75, 23.0], [84.53, 22.47], [84.0, 22.25], [83.7, 22.38], [83.53, 21.97], [83.0, 21.75], [82.47, 21.97], [82.25, 22.5], [82.35, 22.75], [82.32, 22.82], [82.25, 22.85], [82.0, 22.75], [81.75, 22.85], [81.5, 22.75], [81.25, 22.85], [81.0, 22.75], [80.47, 22.97], [80.32, 23.32], [79.97, 23.47], [79.82, 23.82], [79.75, 23.85], [79.5, 23.75], [79.25, 23.85], [79.0, 23.75], [78.47, 23.97], [78.25, 24.5], [78.35, 24.75], [78.25, 25.0], [78.35, 25.25]]]]}, "2013-08-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.35, 26.25], [79.25, 26.5], [79.35, 26.75], [79.25, 27.0], [79.47, 27.53], [80.0, 27.75], [80.53, 27.53], [80.68, 27.18], [81.03, 27.03], [81.25, 26.5], [81.15, 26.25], [81.18, 26.18], [81.53, 26.03], [81.75, 25.5], [81.65, 25.25], [81.68, 25.18], [81.75, 25.15], [82.0, 25.25], [82.25, 25.15], [82.5, 25.25], [82.75, 25.15], [83.0, 25.25], [83.53, 25.03], [83.75, 24.5], [83.65, 24.25], [83.75, 24.0], [83.54, 23.5], [83.75, 23.0], [83.53, 22.47], [83.0, 22.25], [82.47, 22.47], [82.25, 23.0], [82.43, 23.43], [82.0, 23.25], [81.47, 23.47], [81.32, 23.82], [80.97, 23.97], [80.82, 24.32], [80.47, 24.47], [80.32, 24.82], [80.25, 24.85], [80.0, 24.75], [79.47, 24.97], [79.25, 25.5], [79.35, 25.75], [79.25, 26.0], [79.35, 26.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.8671243555110095}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.370180853985162}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.552594285221915, 25.626001379057186, 25.569120172828377, 25.388981064268137, 26.120966771149824]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.994826616992157, 22.43637533280571, 22.624249375942384, 23.36655293475826, 23.979257055341975]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.1022629793566128, -2.350701954793084, -2.3813911206025415, -2.7719489803385935, -2.239150084165342]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.7978586130976737, -3.407844835379251, -3.5184819975436312, -3.8671243555110095, -2.7301848930051165]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8696267566375913, -1.9755428846598102, -1.9190537896525515, -2.06553141566241, -1.6150778872186042]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.4799914348617285, -2.586030505227965, -2.6394409299413333, -2.7834844801778282, -1.8556048531664016]}}