{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:04:22.313928", "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": "2015-Dec-14_to_2015-Dec-17_82.0_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": 2015120000357}, "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 14 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 17 2015"}, "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": 53156.719552573675}, "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": 82.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "82.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 80.75}, "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": 23.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 26.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-12-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[80.25, 25.0], [80.47, 25.53], [81.0, 25.75], [81.25, 25.65], [81.5, 25.75], [81.75, 25.65], [82.0, 25.75], [82.25, 25.65], [82.5, 25.75], [82.75, 25.65], [83.0, 25.75], [83.53, 25.53], [83.75, 25.0], [83.65, 24.75], [83.75, 24.5], [83.53, 23.97], [83.0, 23.75], [82.75, 23.85], [82.68, 23.82], [82.53, 23.47], [82.0, 23.25], [81.47, 23.47], [81.32, 23.82], [80.97, 23.97], [80.82, 24.32], [80.47, 24.47], [80.25, 25.0]]]]}, "2015-12-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[80.25, 25.0], [80.47, 25.53], [81.0, 25.75], [81.25, 25.65], [81.32, 25.68], [81.47, 26.03], [81.82, 26.18], [81.97, 26.53], [82.5, 26.75], [82.75, 26.65], [83.0, 26.75], [83.25, 26.65], [83.5, 26.75], [84.03, 26.53], [84.18, 26.18], [84.25, 26.15], [84.5, 26.25], [85.03, 26.03], [85.25, 25.5], [85.03, 24.97], [84.5, 24.75], [84.25, 24.85], [84.0, 24.75], [83.75, 24.85], [83.68, 24.82], [83.65, 24.75], [83.75, 24.5], [83.53, 23.97], [83.0, 23.75], [82.75, 23.85], [82.68, 23.82], [82.53, 23.47], [82.0, 23.25], [81.47, 23.47], [81.32, 23.82], [80.97, 23.97], [80.82, 24.32], [80.47, 24.47], [80.25, 25.0]]]]}, "2015-12-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[80.25, 25.0], [80.47, 25.53], [81.0, 25.75], [81.25, 25.65], [81.32, 25.68], [81.47, 26.03], [81.82, 26.18], [81.97, 26.53], [82.5, 26.75], [82.75, 26.65], [83.0, 26.75], [83.25, 26.65], [83.5, 26.75], [84.03, 26.53], [84.18, 26.18], [84.25, 26.15], [84.5, 26.25], [85.03, 26.03], [85.25, 25.5], [85.03, 24.97], [84.5, 24.75], [84.25, 24.85], [84.0, 24.75], [83.75, 24.85], [83.68, 24.82], [83.65, 24.75], [83.75, 24.5], [83.53, 23.97], [83.0, 23.75], [82.75, 23.85], [82.68, 23.82], [82.53, 23.47], [82.0, 23.25], [81.47, 23.47], [81.32, 23.82], [80.97, 23.97], [80.82, 24.32], [80.47, 24.47], [80.25, 25.0]]]]}, "2015-12-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[82.5, 26.75], [82.75, 26.65], [83.0, 26.75], [83.25, 26.65], [83.5, 26.75], [84.03, 26.53], [84.18, 26.18], [84.25, 26.15], [84.5, 26.25], [85.03, 26.03], [85.25, 25.5], [85.03, 24.97], [84.5, 24.75], [84.25, 24.85], [84.0, 24.75], [83.75, 24.85], [83.5, 24.75], [83.25, 24.85], [83.0, 24.75], [82.75, 24.85], [82.5, 24.75], [82.25, 24.85], [82.0, 24.75], [81.47, 24.97], [81.25, 25.5], [81.47, 26.03], [81.82, 26.18], [81.97, 26.53], [82.5, 26.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.102183918679998}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.537969110941683}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.467573357360948, 14.271284640254066, 14.063753618923045, 14.078529309053238]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.828040528660381, 13.749682237062473, 13.657813895189008, 13.73465642504874]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.660199257512795, -2.5678929951336165, -2.5453184725684896, -2.3234698735786625]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.102183918679998, -2.930619329343017, -3.0850993096362913, -2.450495934824403]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5910431429578633, -1.5380899456500667, -1.5169067466019346, -1.3544842311029766]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7834304732312158, -1.7031983985768036, -1.8437195982293666, -1.4547405140159433]}}