{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:56:34.746592", "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-Jun-06_to_2014-Jun-09_120.5_43.5"}, "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": 2014060000301}, "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": "June 06 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 09 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": 69966.47169174194}, "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": ["China"]}, "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": []}, "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": 43.5}, "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": 120.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "120.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 117.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 122.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 41.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 44.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-06-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[117.47, 44.03], [118.0, 44.25], [118.25, 44.15], [118.32, 44.18], [118.47, 44.53], [119.0, 44.75], [119.25, 44.65], [119.5, 44.75], [119.75, 44.65], [120.0, 44.75], [120.25, 44.65], [120.5, 44.75], [120.75, 44.65], [121.0, 44.75], [121.53, 44.53], [121.68, 44.18], [122.03, 44.03], [122.18, 43.68], [122.53, 43.53], [122.75, 43.0], [122.65, 42.75], [122.75, 42.5], [122.53, 41.97], [122.0, 41.75], [121.75, 41.85], [121.5, 41.75], [121.25, 41.85], [121.18, 41.82], [121.03, 41.47], [120.5, 41.25], [119.97, 41.47], [119.82, 41.82], [119.75, 41.85], [119.5, 41.75], [118.97, 41.97], [118.82, 42.32], [118.75, 42.35], [118.5, 42.25], [118.25, 42.35], [118.0, 42.25], [117.47, 42.47], [117.25, 43.0], [117.35, 43.25], [117.25, 43.5], [117.47, 44.03]]]]}, "2014-06-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[117.47, 44.03], [118.0, 44.25], [118.25, 44.15], [118.32, 44.18], [118.47, 44.53], [119.0, 44.75], [119.25, 44.65], [119.5, 44.75], [119.75, 44.65], [120.0, 44.75], [120.25, 44.65], [120.5, 44.75], [120.75, 44.65], [121.0, 44.75], [121.53, 44.53], [121.68, 44.18], [122.03, 44.03], [122.18, 43.68], [122.53, 43.53], [122.75, 43.0], [122.65, 42.75], [122.75, 42.5], [122.53, 41.97], [122.18, 41.82], [122.03, 41.47], [121.5, 41.25], [121.25, 41.35], [121.0, 41.25], [120.75, 41.35], [120.5, 41.25], [119.97, 41.47], [119.82, 41.82], [119.75, 41.85], [119.5, 41.75], [118.97, 41.97], [118.82, 42.32], [118.75, 42.35], [118.5, 42.25], [118.25, 42.35], [118.0, 42.25], [117.47, 42.47], [117.25, 43.0], [117.35, 43.25], [117.25, 43.5], [117.47, 44.03]]]]}, "2014-06-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[117.47, 44.03], [118.0, 44.25], [118.25, 44.15], [118.32, 44.18], [118.47, 44.53], [119.0, 44.75], [119.25, 44.65], [119.5, 44.75], [119.75, 44.65], [120.0, 44.75], [120.25, 44.65], [120.5, 44.75], [120.75, 44.65], [121.0, 44.75], [121.53, 44.53], [121.68, 44.18], [122.03, 44.03], [122.18, 43.68], [122.53, 43.53], [122.75, 43.0], [122.65, 42.75], [122.75, 42.5], [122.53, 41.97], [122.18, 41.82], [122.03, 41.47], [121.5, 41.25], [121.25, 41.35], [121.0, 41.25], [120.75, 41.35], [120.5, 41.25], [119.97, 41.47], [119.82, 41.82], [119.75, 41.85], [119.5, 41.75], [118.97, 41.97], [118.82, 42.32], [118.75, 42.35], [118.5, 42.25], [118.25, 42.35], [118.0, 42.25], [117.47, 42.47], [117.25, 43.0], [117.35, 43.25], [117.25, 43.5], [117.47, 44.03]]]]}, "2014-06-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[118.97, 44.03], [119.5, 44.25], [119.75, 44.15], [120.0, 44.25], [120.25, 44.15], [120.32, 44.18], [120.47, 44.53], [121.0, 44.75], [121.53, 44.53], [121.68, 44.18], [122.03, 44.03], [122.25, 43.5], [122.13, 43.2], [122.53, 43.03], [122.75, 42.5], [122.53, 41.97], [122.18, 41.82], [122.03, 41.47], [121.5, 41.25], [121.25, 41.35], [121.0, 41.25], [120.47, 41.47], [120.25, 42.0], [120.38, 42.3], [120.25, 42.35], [120.0, 42.25], [119.75, 42.35], [119.5, 42.25], [118.97, 42.47], [118.75, 43.0], [118.85, 43.25], [118.75, 43.5], [118.97, 44.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.761507854949912}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.664257724851781}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.999965667699826, 13.08295747743631, 14.907289834543292, 16.512372059849667]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.68953811810212, 9.557014181869135, 11.39796798459679, 15.921822404731756]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.855397039154815, -7.8774816594964525, -5.905650053452665, -5.1537850882825404]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.347974176943922, -8.761507854949912, -7.224327262611894, -5.87057676835127]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7972459569088177, -2.0770948579482864, -1.5074567832584402, -1.3413065114594527]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1397119744688755, -2.422866009389529, -1.7649951328262319, -1.436464500953506]}}