{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:01:51.350564", "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-04_to_2014-Dec-06_129.0_32.5"}, "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": 2014120000310}, "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 04 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 06 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": 67551.12510001022}, "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": ["South 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": ["Eastern China Sea", "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": 32.5}, "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": 129.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "129.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 126.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 130.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 30.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 34.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-12-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[125.75, 34.5], [125.97, 35.03], [126.5, 35.25], [127.0, 35.04], [127.5, 35.25], [128.03, 35.03], [128.18, 34.68], [128.25, 34.65], [128.5, 34.75], [129.03, 34.53], [129.2, 34.13], [129.5, 34.25], [130.03, 34.03], [130.25, 33.5], [130.15, 33.25], [130.18, 33.18], [130.53, 33.03], [130.75, 32.5], [130.65, 32.25], [130.75, 32.0], [130.53, 31.47], [130.18, 31.32], [130.15, 31.25], [130.18, 31.18], [130.53, 31.03], [130.75, 30.5], [130.53, 29.97], [130.0, 29.75], [129.47, 29.97], [129.32, 30.32], [129.25, 30.35], [129.0, 30.25], [128.47, 30.47], [128.25, 31.0], [128.35, 31.25], [128.25, 31.5], [128.35, 31.75], [128.32, 31.82], [127.97, 31.97], [127.82, 32.32], [127.47, 32.47], [127.32, 32.82], [126.97, 32.97], [126.82, 33.32], [126.47, 33.47], [126.32, 33.82], [125.97, 33.97], [125.75, 34.5]]]]}, "2014-12-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[125.75, 34.5], [125.97, 35.03], [126.5, 35.25], [127.0, 35.04], [127.5, 35.25], [128.03, 35.03], [128.18, 34.68], [128.25, 34.65], [128.5, 34.75], [129.03, 34.53], [129.2, 34.13], [129.5, 34.25], [130.03, 34.03], [130.25, 33.5], [130.15, 33.25], [130.18, 33.18], [130.53, 33.03], [130.75, 32.5], [130.65, 32.25], [130.75, 32.0], [130.53, 31.47], [130.18, 31.32], [130.15, 31.25], [130.18, 31.18], [130.53, 31.03], [130.75, 30.5], [130.53, 29.97], [130.0, 29.75], [129.47, 29.97], [129.32, 30.32], [129.25, 30.35], [129.0, 30.25], [128.47, 30.47], [128.25, 31.0], [128.35, 31.25], [128.25, 31.5], [128.35, 31.75], [128.32, 31.82], [127.97, 31.97], [127.82, 32.32], [127.47, 32.47], [127.32, 32.82], [126.97, 32.97], [126.82, 33.32], [126.47, 33.47], [126.32, 33.82], [125.97, 33.97], [125.75, 34.5]]]]}, "2014-12-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[125.75, 34.5], [125.97, 35.03], [126.5, 35.25], [127.0, 35.04], [127.5, 35.25], [128.03, 35.03], [128.18, 34.68], [128.25, 34.65], [128.5, 34.75], [129.03, 34.53], [129.2, 34.13], [129.5, 34.25], [130.03, 34.03], [130.25, 33.5], [130.15, 33.25], [130.18, 33.18], [130.53, 33.03], [130.75, 32.5], [130.65, 32.25], [130.75, 32.0], [130.53, 31.47], [130.18, 31.32], [130.15, 31.25], [130.18, 31.18], [130.53, 31.03], [130.75, 30.5], [130.53, 29.97], [130.0, 29.75], [129.47, 29.97], [129.32, 30.32], [129.25, 30.35], [129.0, 30.25], [128.47, 30.47], [128.25, 31.0], [128.35, 31.25], [128.25, 31.5], [128.35, 31.75], [128.32, 31.82], [127.97, 31.97], [127.82, 32.32], [127.47, 32.47], [127.32, 32.82], [126.97, 32.97], [126.82, 33.32], [126.47, 33.47], [126.32, 33.82], [125.97, 33.97], [125.75, 34.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.719019801248123}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.43294016689713}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [8.60706650373686, 7.483727276309651, 8.457117328723143]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.8228189167174946, 2.2536428798384804, 3.2829502986493253]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.256241550024163, -5.107732216446921, -3.934846734220304]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.759346252886587, -5.719019801248123, -4.532615724043865]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5483883660859188, -1.8495220489355013, -1.417031560032404]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6787430232213392, -2.029357035644371, -1.5010223035694743]}}