{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:55:53.098441", "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-Mar-06_to_2014-Mar-08_142.0_40.0"}, "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": 2014030000343}, "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": "March 06 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 08 2014"}, "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": 73775.7327499417}, "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": ["Japan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.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": ["North Pacific Ocean"]}, "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": 40.0}, "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": 142.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "142.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 140.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 146.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 37.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 41.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-03-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.25, 38.0], [140.47, 38.53], [140.82, 38.68], [140.97, 39.03], [141.32, 39.18], [141.35, 39.25], [141.25, 39.5], [141.35, 39.75], [141.25, 40.0], [141.35, 40.25], [141.25, 40.5], [141.35, 40.75], [141.25, 41.0], [141.47, 41.53], [142.0, 41.75], [142.25, 41.65], [142.5, 41.75], [143.03, 41.53], [143.18, 41.18], [143.25, 41.15], [143.5, 41.25], [143.75, 41.15], [144.0, 41.25], [144.25, 41.15], [144.5, 41.25], [145.03, 41.03], [145.18, 40.68], [145.25, 40.65], [145.5, 40.75], [145.75, 40.65], [146.0, 40.75], [146.25, 40.65], [146.5, 40.75], [147.03, 40.53], [147.25, 40.0], [147.03, 39.47], [146.5, 39.25], [146.25, 39.35], [146.0, 39.25], [145.75, 39.35], [145.68, 39.32], [145.53, 38.97], [145.0, 38.75], [144.75, 38.85], [144.5, 38.75], [144.25, 38.85], [144.0, 38.75], [143.47, 38.97], [143.32, 39.32], [143.25, 39.35], [143.18, 39.32], [143.15, 39.25], [143.25, 39.0], [143.03, 38.47], [142.68, 38.32], [142.65, 38.25], [142.75, 38.0], [142.53, 37.47], [142.18, 37.32], [142.03, 36.97], [141.5, 36.75], [140.97, 36.97], [140.82, 37.32], [140.47, 37.47], [140.25, 38.0]]]]}, "2014-03-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.25, 38.0], [140.47, 38.53], [140.82, 38.68], [140.97, 39.03], [141.32, 39.18], [141.35, 39.25], [141.25, 39.5], [141.35, 39.75], [141.25, 40.0], [141.35, 40.25], [141.25, 40.5], [141.35, 40.75], [141.25, 41.0], [141.47, 41.53], [142.0, 41.75], [142.25, 41.65], [142.5, 41.75], [143.03, 41.53], [143.18, 41.18], [143.25, 41.15], [143.5, 41.25], [143.75, 41.15], [144.0, 41.25], [144.25, 41.15], [144.5, 41.25], [145.03, 41.03], [145.18, 40.68], [145.25, 40.65], [145.5, 40.75], [145.75, 40.65], [146.0, 40.75], [146.25, 40.65], [146.5, 40.75], [147.03, 40.53], [147.25, 40.0], [147.03, 39.47], [146.5, 39.25], [146.25, 39.35], [146.0, 39.25], [145.75, 39.35], [145.68, 39.32], [145.53, 38.97], [145.0, 38.75], [144.75, 38.85], [144.5, 38.75], [144.25, 38.85], [144.0, 38.75], [143.47, 38.97], [143.32, 39.32], [143.25, 39.35], [143.18, 39.32], [143.15, 39.25], [143.25, 39.0], [143.03, 38.47], [142.68, 38.32], [142.65, 38.25], [142.75, 38.0], [142.53, 37.47], [142.18, 37.32], [142.03, 36.97], [141.5, 36.75], [140.97, 36.97], [140.82, 37.32], [140.47, 37.47], [140.25, 38.0]]]]}, "2014-03-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.25, 38.0], [140.47, 38.53], [140.82, 38.68], [140.97, 39.03], [141.32, 39.18], [141.35, 39.25], [141.25, 39.5], [141.35, 39.75], [141.25, 40.0], [141.35, 40.25], [141.25, 40.5], [141.35, 40.75], [141.25, 41.0], [141.47, 41.53], [142.0, 41.75], [142.25, 41.65], [142.5, 41.75], [143.03, 41.53], [143.18, 41.18], [143.25, 41.15], [143.5, 41.25], [143.75, 41.15], [144.0, 41.25], [144.25, 41.15], [144.5, 41.25], [145.03, 41.03], [145.18, 40.68], [145.25, 40.65], [145.5, 40.75], [145.75, 40.65], [146.0, 40.75], [146.25, 40.65], [146.5, 40.75], [147.03, 40.53], [147.25, 40.0], [147.03, 39.47], [146.5, 39.25], [146.25, 39.35], [146.0, 39.25], [145.75, 39.35], [145.68, 39.32], [145.53, 38.97], [145.0, 38.75], [144.75, 38.85], [144.5, 38.75], [144.25, 38.85], [144.0, 38.75], [143.47, 38.97], [143.32, 39.32], [143.25, 39.35], [143.18, 39.32], [143.15, 39.25], [143.25, 39.0], [143.03, 38.47], [142.68, 38.32], [142.65, 38.25], [142.75, 38.0], [142.53, 37.47], [142.18, 37.32], [142.03, 36.97], [141.5, 36.75], [140.97, 36.97], [140.82, 37.32], [140.47, 37.47], [140.25, 38.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.338822622754833}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.7375320350079013}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-0.572880969769983, -0.4176755227943545, 0.3084548228197832]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-3.209548220022498, -2.7279685542781635, -1.5611303677439423]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.0317404878406515, -3.9598359760813175, -3.221019641101735]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.338822622754833, -4.936863033984764, -3.7967400078967444]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7014898217611958, -1.6123263591645705, -1.273972239809194]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.242726868325808, -2.0007904096880926, -1.472521076164452]}}