{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:05.919318", "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-Jan-18_to_2015-Jan-20_90.5_23.0"}, "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": 2015010000867}, "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": "January 18 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 20 2015"}, "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": 84997.73260206835}, "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": ["Bangladesh", "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": 23.0}, "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": 90.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "90.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 86.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 90.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 21.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 25.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-01-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[86.25, 24.5], [86.47, 25.03], [87.0, 25.25], [87.25, 25.15], [87.32, 25.18], [87.47, 25.53], [88.0, 25.75], [88.53, 25.53], [88.68, 25.18], [88.75, 25.15], [88.82, 25.18], [88.97, 25.53], [89.5, 25.75], [90.03, 25.53], [90.25, 25.0], [90.15, 24.75], [90.18, 24.68], [90.25, 24.65], [90.5, 24.75], [91.03, 24.53], [91.25, 24.0], [91.15, 23.75], [91.25, 23.5], [91.15, 23.25], [91.25, 23.0], [91.15, 22.75], [91.25, 22.5], [91.15, 22.25], [91.25, 22.0], [91.03, 21.47], [90.5, 21.25], [90.25, 21.35], [90.0, 21.25], [89.75, 21.35], [89.5, 21.25], [89.25, 21.35], [89.0, 21.25], [88.47, 21.47], [88.25, 22.0], [88.35, 22.25], [88.25, 22.5], [88.38, 22.8], [87.97, 22.97], [87.82, 23.32], [87.75, 23.35], [87.5, 23.25], [86.97, 23.47], [86.82, 23.82], [86.47, 23.97], [86.25, 24.5]]]]}, "2015-01-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[86.25, 24.5], [86.47, 25.03], [87.0, 25.25], [87.25, 25.15], [87.32, 25.18], [87.47, 25.53], [88.0, 25.75], [88.53, 25.53], [88.68, 25.18], [88.75, 25.15], [88.82, 25.18], [88.97, 25.53], [89.5, 25.75], [90.03, 25.53], [90.25, 25.0], [90.15, 24.75], [90.18, 24.68], [90.25, 24.65], [90.5, 24.75], [91.03, 24.53], [91.25, 24.0], [91.15, 23.75], [91.25, 23.5], [91.15, 23.25], [91.25, 23.0], [91.15, 22.75], [91.25, 22.5], [91.15, 22.25], [91.25, 22.0], [91.03, 21.47], [90.5, 21.25], [90.25, 21.35], [90.0, 21.25], [89.75, 21.35], [89.5, 21.25], [89.25, 21.35], [89.0, 21.25], [88.47, 21.47], [88.25, 22.0], [88.35, 22.25], [88.25, 22.5], [88.38, 22.8], [87.97, 22.97], [87.82, 23.32], [87.75, 23.35], [87.5, 23.25], [86.97, 23.47], [86.82, 23.82], [86.47, 23.97], [86.25, 24.5]]]]}, "2015-01-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[86.25, 24.5], [86.47, 25.03], [87.0, 25.25], [87.25, 25.15], [87.32, 25.18], [87.47, 25.53], [88.0, 25.75], [88.53, 25.53], [88.68, 25.18], [88.75, 25.15], [88.82, 25.18], [88.97, 25.53], [89.5, 25.75], [90.03, 25.53], [90.25, 25.0], [90.15, 24.75], [90.18, 24.68], [90.25, 24.65], [90.5, 24.75], [91.03, 24.53], [91.25, 24.0], [91.15, 23.75], [91.25, 23.5], [91.15, 23.25], [91.25, 23.0], [91.15, 22.75], [91.25, 22.5], [91.15, 22.25], [91.25, 22.0], [91.03, 21.47], [90.5, 21.25], [90.25, 21.35], [90.0, 21.25], [89.75, 21.35], [89.5, 21.25], [89.25, 21.35], [89.0, 21.25], [88.47, 21.47], [88.25, 22.0], [88.35, 22.25], [88.25, 22.5], [88.38, 22.8], [87.97, 22.97], [87.82, 23.32], [87.75, 23.35], [87.5, 23.25], [86.97, 23.47], [86.82, 23.82], [86.47, 23.97], [86.25, 24.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.5789345901218894}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.7816115741803147}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.228307987675635, 14.858918891497353, 15.343985619175328]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.99420516838785, 12.854815597677373, 13.042890511201165]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.6952648912647192, -3.0788271944637566, -2.5707426368124686]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.237957170612617, -3.5789345901218894, -3.2630345441000372]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5822275633733918, -1.7921582791290154, -1.4497033044203598]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9724444220803867, -2.160388950184586, -1.7429845066270848]}}