{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:55:53.092293", "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_138.0_36.0"}, "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": 2014030000342}, "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": 61643.68518851037}, "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": ["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": 36.0}, "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": 138.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "138.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 136.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 140.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 35.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 39.25}, "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": [[[[137.0, 37.75], [137.25, 37.65], [137.5, 37.75], [137.75, 37.65], [137.82, 37.68], [137.97, 38.03], [138.5, 38.25], [138.75, 38.15], [138.82, 38.18], [138.97, 38.53], [139.32, 38.68], [139.35, 38.75], [139.25, 39.0], [139.47, 39.53], [140.0, 39.75], [140.25, 39.65], [140.5, 39.75], [141.03, 39.53], [141.25, 39.0], [141.03, 38.47], [140.68, 38.32], [140.65, 38.25], [140.75, 38.0], [140.65, 37.75], [140.75, 37.5], [140.53, 36.97], [140.18, 36.82], [140.15, 36.75], [140.25, 36.5], [140.03, 35.97], [139.5, 35.75], [139.25, 35.85], [139.18, 35.82], [139.15, 35.75], [139.25, 35.5], [139.03, 34.97], [138.5, 34.75], [137.97, 34.97], [137.82, 35.32], [137.75, 35.35], [137.5, 35.25], [136.97, 35.47], [136.82, 35.82], [136.75, 35.85], [136.5, 35.75], [135.97, 35.97], [135.75, 36.5], [135.97, 37.03], [136.32, 37.18], [136.47, 37.53], [137.0, 37.75]]]]}, "2014-03-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.0, 37.75], [137.25, 37.65], [137.5, 37.75], [137.75, 37.65], [137.82, 37.68], [137.97, 38.03], [138.5, 38.25], [138.75, 38.15], [138.82, 38.18], [138.97, 38.53], [139.32, 38.68], [139.35, 38.75], [139.25, 39.0], [139.47, 39.53], [140.0, 39.75], [140.25, 39.65], [140.5, 39.75], [141.03, 39.53], [141.25, 39.0], [141.03, 38.47], [140.68, 38.32], [140.65, 38.25], [140.75, 38.0], [140.65, 37.75], [140.75, 37.5], [140.53, 36.97], [140.18, 36.82], [140.15, 36.75], [140.25, 36.5], [140.03, 35.97], [139.5, 35.75], [139.25, 35.85], [139.18, 35.82], [139.15, 35.75], [139.25, 35.5], [139.03, 34.97], [138.5, 34.75], [137.97, 34.97], [137.82, 35.32], [137.75, 35.35], [137.5, 35.25], [136.97, 35.47], [136.82, 35.82], [136.75, 35.85], [136.5, 35.75], [135.97, 35.97], [135.75, 36.5], [135.97, 37.03], [136.32, 37.18], [136.47, 37.53], [137.0, 37.75]]]]}, "2014-03-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.0, 37.75], [137.25, 37.65], [137.5, 37.75], [137.75, 37.65], [137.82, 37.68], [137.97, 38.03], [138.5, 38.25], [138.75, 38.15], [138.82, 38.18], [138.97, 38.53], [139.32, 38.68], [139.35, 38.75], [139.25, 39.0], [139.47, 39.53], [140.0, 39.75], [140.25, 39.65], [140.5, 39.75], [141.03, 39.53], [141.25, 39.0], [141.03, 38.47], [140.68, 38.32], [140.65, 38.25], [140.75, 38.0], [140.65, 37.75], [140.75, 37.5], [140.53, 36.97], [140.18, 36.82], [140.15, 36.75], [140.25, 36.5], [140.03, 35.97], [139.5, 35.75], [139.25, 35.85], [139.18, 35.82], [139.15, 35.75], [139.25, 35.5], [139.03, 34.97], [138.5, 34.75], [137.97, 34.97], [137.82, 35.32], [137.75, 35.35], [137.5, 35.25], [136.97, 35.47], [136.82, 35.82], [136.75, 35.85], [136.5, 35.75], [135.97, 35.97], [135.75, 36.5], [135.97, 37.03], [136.32, 37.18], [136.47, 37.53], [137.0, 37.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.769693097090624}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.565741401932317}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-4.417296287714748, -4.062720969786085, -2.689454188615173]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-10.031363961980844, -8.87983546094, -7.367853923500718]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.185566931832859, -5.9426899876622885, -4.568967286301802]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-10.769693097090624, -9.751729193958397, -6.968106226394923]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.009385379773113, -1.8580242799730613, -1.4186445471762386]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.0120658981966226, -2.612261901750955, -1.8676276022508824]}}