{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:23.283450", "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": "2010-Dec-30_to_2011-Jan-01_83.5_9.0"}, "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": 2010120001411}, "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 30 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 01 2011"}, "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": 58108.977661046905}, "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": ["Sri Lanka"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Bay-of-Bengal"]}, "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": 9.0}, "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": 83.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "83.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 81.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 83.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 6.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 9.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-12-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[80.97, 9.03], [81.5, 9.25], [81.75, 9.15], [81.82, 9.18], [81.97, 9.53], [82.32, 9.68], [82.47, 10.03], [83.0, 10.25], [83.25, 10.15], [83.5, 10.25], [84.03, 10.03], [84.25, 9.5], [84.15, 9.25], [84.25, 9.0], [84.15, 8.75], [84.25, 8.5], [84.15, 8.25], [84.25, 8.0], [84.15, 7.75], [84.25, 7.5], [84.03, 6.97], [83.5, 6.75], [83.0, 6.96], [82.68, 6.82], [82.53, 6.47], [82.0, 6.25], [81.47, 6.47], [81.25, 7.0], [81.35, 7.25], [81.32, 7.32], [80.97, 7.47], [80.75, 8.0], [80.85, 8.25], [80.75, 8.5], [80.97, 9.03]]]]}, "2010-12-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[80.97, 9.03], [81.5, 9.25], [81.75, 9.15], [81.82, 9.18], [81.97, 9.53], [82.32, 9.68], [82.47, 10.03], [83.0, 10.25], [83.25, 10.15], [83.5, 10.25], [84.03, 10.03], [84.25, 9.5], [84.15, 9.25], [84.25, 9.0], [84.15, 8.75], [84.25, 8.5], [84.15, 8.25], [84.25, 8.0], [84.15, 7.75], [84.25, 7.5], [84.03, 6.97], [83.5, 6.75], [83.0, 6.96], [82.68, 6.82], [82.53, 6.47], [82.0, 6.25], [81.47, 6.47], [81.25, 7.0], [81.35, 7.25], [81.32, 7.32], [80.97, 7.47], [80.75, 8.0], [80.85, 8.25], [80.75, 8.5], [80.97, 9.03]]]]}, "2011-01-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[80.97, 9.03], [81.5, 9.25], [81.75, 9.15], [81.82, 9.18], [81.97, 9.53], [82.32, 9.68], [82.47, 10.03], [83.0, 10.25], [83.25, 10.15], [83.5, 10.25], [84.03, 10.03], [84.25, 9.5], [84.15, 9.25], [84.25, 9.0], [84.15, 8.75], [84.25, 8.5], [84.15, 8.25], [84.25, 8.0], [84.15, 7.75], [84.25, 7.5], [84.03, 6.97], [83.5, 6.75], [83.0, 6.96], [82.68, 6.82], [82.53, 6.47], [82.0, 6.25], [81.47, 6.47], [81.25, 7.0], [81.35, 7.25], [81.32, 7.32], [80.97, 7.47], [80.75, 8.0], [80.85, 8.25], [80.75, 8.5], [80.97, 9.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.250220492462347}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.997592410413306}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.288842331146213, 25.182608710538034, 25.234454428681033]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.731930910149174, 24.621811038657313, 24.804683147567346]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.9564661567785098, -1.0730870749423054, -0.9632239995191029]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.0686271398672034, -1.250220492462347, -1.1629770235910541]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6239990256274985, -1.8107001980816708, -1.5667374579544529]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8629761362050143, -2.1696843229488065, -1.825561688999838]}}