{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:01:54.927919", "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": "2014-Dec-26_to_2014-Dec-29_90.5_23.5"}, "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": 2014120001119}, "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 26 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 29 2014"}, "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": 71507.13207195424}, "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": 23.5}, "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": 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": 87.25}, "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": 20.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 24.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-12-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[86.85, 21.25], [86.75, 21.5], [86.97, 22.03], [87.32, 22.18], [87.47, 22.53], [87.82, 22.68], [87.97, 23.03], [88.32, 23.18], [88.35, 23.25], [88.25, 23.5], [88.47, 24.03], [88.82, 24.18], [88.97, 24.53], [89.5, 24.75], [90.03, 24.53], [90.18, 24.18], [90.25, 24.15], [90.5, 24.25], [91.03, 24.03], [91.25, 23.5], [91.15, 23.25], [91.25, 23.0], [91.03, 22.47], [90.68, 22.32], [90.65, 22.25], [90.75, 22.0], [90.53, 21.47], [90.0, 21.25], [89.5, 21.46], [89.18, 21.32], [89.15, 21.25], [89.25, 21.0], [89.03, 20.47], [88.68, 20.32], [88.53, 19.97], [88.0, 19.75], [87.75, 19.85], [87.5, 19.75], [86.97, 19.97], [86.75, 20.5], [86.85, 20.75], [86.75, 21.0], [86.85, 21.25]]]]}, "2014-12-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[86.85, 21.25], [86.75, 21.5], [86.97, 22.03], [87.32, 22.18], [87.47, 22.53], [87.82, 22.68], [87.97, 23.03], [88.32, 23.18], [88.35, 23.25], [88.25, 23.5], [88.47, 24.03], [88.82, 24.18], [88.97, 24.53], [89.5, 24.75], [90.03, 24.53], [90.18, 24.18], [90.25, 24.15], [90.5, 24.25], [91.03, 24.03], [91.25, 23.5], [91.15, 23.25], [91.25, 23.0], [91.03, 22.47], [90.68, 22.32], [90.65, 22.25], [90.75, 22.0], [90.53, 21.47], [90.0, 21.25], [89.5, 21.46], [89.18, 21.32], [89.15, 21.25], [89.25, 21.0], [89.03, 20.47], [88.68, 20.32], [88.53, 19.97], [88.0, 19.75], [87.75, 19.85], [87.5, 19.75], [86.97, 19.97], [86.75, 20.5], [86.85, 20.75], [86.75, 21.0], [86.85, 21.25]]]]}, "2014-12-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[86.85, 21.25], [86.75, 21.5], [86.97, 22.03], [87.32, 22.18], [87.47, 22.53], [87.82, 22.68], [87.97, 23.03], [88.32, 23.18], [88.35, 23.25], [88.25, 23.5], [88.47, 24.03], [88.82, 24.18], [88.97, 24.53], [89.5, 24.75], [90.03, 24.53], [90.18, 24.18], [90.25, 24.15], [90.5, 24.25], [91.03, 24.03], [91.25, 23.5], [91.15, 23.25], [91.25, 23.0], [91.03, 22.47], [90.68, 22.32], [90.65, 22.25], [90.75, 22.0], [90.53, 21.47], [90.0, 21.25], [89.5, 21.46], [89.18, 21.32], [89.15, 21.25], [89.25, 21.0], [89.03, 20.47], [88.68, 20.32], [88.53, 19.97], [88.0, 19.75], [87.75, 19.85], [87.5, 19.75], [86.97, 19.97], [86.75, 20.5], [86.85, 20.75], [86.75, 21.0], [86.85, 21.25]]]]}, "2014-12-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[90.5, 24.25], [91.03, 24.03], [91.25, 23.5], [91.03, 22.97], [90.5, 22.75], [89.97, 22.97], [89.75, 23.5], [89.97, 24.03], [90.5, 24.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.472071854551018}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.255324554015243}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.494719795375033, 17.22313517550026, 17.569111337115032, 16.254327757615044]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.273034256596361, 14.391514740064736, 15.39859884954592, 16.254327757615044]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.2753128031510643, -2.4503434343243407, -2.046629624960533, -2.097519544260024]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.472071854551018, -3.2452781030592064, -2.493496141079163, -2.097519544260024]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6658555193992455, -1.836609485351068, -1.591339567956779, -1.4570328362434715]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.081788047112242, -2.110437027906317, -1.8712658284588963, -1.4570328362434715]}}