{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:56:02.691365", "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-Apr-03_to_2014-Apr-05_131.0_39.5"}, "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": 2014040000160}, "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": "April 03 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 05 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": 66882.09250417378}, "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": ["North Korea"]}, "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": ["Japan Sea"]}, "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": 39.5}, "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": 131.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "131.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 128.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 133.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 37.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 40.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-04-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[128.25, 40.5], [128.47, 41.03], [129.0, 41.25], [129.53, 41.03], [129.68, 40.68], [129.75, 40.65], [129.82, 40.68], [129.97, 41.03], [130.5, 41.25], [131.03, 41.03], [131.18, 40.68], [131.25, 40.65], [131.5, 40.75], [132.0, 40.54], [132.5, 40.75], [132.75, 40.65], [133.0, 40.75], [133.25, 40.65], [133.5, 40.75], [134.03, 40.53], [134.25, 40.0], [134.15, 39.75], [134.25, 39.5], [134.03, 38.97], [133.5, 38.75], [133.0, 38.96], [132.68, 38.82], [132.53, 38.47], [132.0, 38.25], [131.5, 38.46], [131.13, 38.3], [131.25, 38.0], [131.03, 37.47], [130.5, 37.25], [130.25, 37.35], [130.0, 37.25], [129.75, 37.35], [129.5, 37.25], [128.97, 37.47], [128.75, 38.0], [128.85, 38.25], [128.75, 38.5], [128.85, 38.75], [128.75, 39.0], [128.85, 39.25], [128.75, 39.5], [128.85, 39.75], [128.82, 39.82], [128.47, 39.97], [128.25, 40.5]]]]}, "2014-04-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[128.25, 40.5], [128.47, 41.03], [129.0, 41.25], [129.53, 41.03], [129.68, 40.68], [129.75, 40.65], [129.82, 40.68], [129.97, 41.03], [130.5, 41.25], [131.03, 41.03], [131.18, 40.68], [131.25, 40.65], [131.5, 40.75], [132.0, 40.54], [132.5, 40.75], [132.75, 40.65], [133.0, 40.75], [133.25, 40.65], [133.5, 40.75], [134.03, 40.53], [134.25, 40.0], [134.15, 39.75], [134.25, 39.5], [134.03, 38.97], [133.5, 38.75], [133.0, 38.96], [132.68, 38.82], [132.53, 38.47], [132.0, 38.25], [131.5, 38.46], [131.13, 38.3], [131.25, 38.0], [131.03, 37.47], [130.5, 37.25], [130.25, 37.35], [130.0, 37.25], [129.75, 37.35], [129.5, 37.25], [128.97, 37.47], [128.75, 38.0], [128.85, 38.25], [128.75, 38.5], [128.85, 38.75], [128.75, 39.0], [128.85, 39.25], [128.75, 39.5], [128.85, 39.75], [128.82, 39.82], [128.47, 39.97], [128.25, 40.5]]]]}, "2014-04-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[128.25, 40.5], [128.47, 41.03], [129.0, 41.25], [129.53, 41.03], [129.68, 40.68], [129.75, 40.65], [129.82, 40.68], [129.97, 41.03], [130.5, 41.25], [131.03, 41.03], [131.18, 40.68], [131.25, 40.65], [131.5, 40.75], [132.0, 40.54], [132.5, 40.75], [132.75, 40.65], [133.0, 40.75], [133.25, 40.65], [133.5, 40.75], [134.03, 40.53], [134.25, 40.0], [134.15, 39.75], [134.25, 39.5], [134.03, 38.97], [133.5, 38.75], [133.0, 38.96], [132.68, 38.82], [132.53, 38.47], [132.0, 38.25], [131.5, 38.46], [131.13, 38.3], [131.25, 38.0], [131.03, 37.47], [130.5, 37.25], [130.25, 37.35], [130.0, 37.25], [129.75, 37.35], [129.5, 37.25], [128.97, 37.47], [128.75, 38.0], [128.85, 38.25], [128.75, 38.5], [128.85, 38.75], [128.75, 39.0], [128.85, 39.25], [128.75, 39.5], [128.85, 39.75], [128.82, 39.82], [128.47, 39.97], [128.25, 40.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.9909105011005295}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.1633825527680863}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [4.408551261792752, 4.059828777685311, 4.403692920352341]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [1.3932914061674069, 0.6656431052973062, -0.43667651696512166]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.9620567221009924, -3.3912884286133465, -3.1368025075899197]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.895567484085518, -4.746910551647147, -5.9909105011005295]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5533933084420624, -1.717331327246465, -1.6095408652007428]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8044783767403936, -1.9402159033676165, -2.2128419822624883]}}