{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:45:39.955722", "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": "2010-Sep-28_to_2010-Sep-30_126.0_35.5"}, "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": 2010090001226}, "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": "September 28 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 30 2010"}, "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": 127931.65371578254}, "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", "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", "Yellow 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": 35.5}, "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": 126.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "126.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 124.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 129.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 32.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 38.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-09-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[123.85, 34.75], [123.75, 35.0], [123.97, 35.53], [124.32, 35.68], [124.35, 35.75], [124.25, 36.0], [124.47, 36.53], [124.82, 36.68], [124.97, 37.03], [125.5, 37.25], [125.75, 37.15], [125.88, 37.2], [125.75, 37.5], [125.85, 37.75], [125.75, 38.0], [125.97, 38.53], [126.5, 38.75], [127.03, 38.53], [127.18, 38.18], [127.25, 38.15], [127.5, 38.25], [127.75, 38.15], [127.82, 38.18], [127.85, 38.25], [127.75, 38.5], [127.97, 39.03], [128.5, 39.25], [129.03, 39.03], [129.25, 38.5], [129.15, 38.25], [129.18, 38.18], [129.53, 38.03], [129.75, 37.5], [129.65, 37.25], [129.75, 37.0], [129.53, 36.47], [129.18, 36.32], [129.15, 36.25], [129.25, 36.0], [129.03, 35.47], [128.5, 35.25], [128.25, 35.35], [128.18, 35.32], [128.03, 34.97], [127.68, 34.82], [127.65, 34.75], [127.75, 34.5], [127.53, 33.97], [127.0, 33.75], [126.75, 33.85], [126.68, 33.82], [126.53, 33.47], [126.18, 33.32], [126.03, 32.97], [125.68, 32.82], [125.53, 32.47], [125.0, 32.25], [124.47, 32.47], [124.25, 33.0], [124.35, 33.25], [124.32, 33.32], [123.97, 33.47], [123.75, 34.0], [123.85, 34.25], [123.75, 34.5], [123.85, 34.75]]]]}, "2010-09-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[123.85, 34.75], [123.75, 35.0], [123.97, 35.53], [124.32, 35.68], [124.35, 35.75], [124.25, 36.0], [124.47, 36.53], [124.82, 36.68], [124.97, 37.03], [125.5, 37.25], [125.75, 37.15], [125.88, 37.2], [125.75, 37.5], [125.85, 37.75], [125.75, 38.0], [125.97, 38.53], [126.5, 38.75], [127.03, 38.53], [127.18, 38.18], [127.25, 38.15], [127.5, 38.25], [127.75, 38.15], [127.82, 38.18], [127.85, 38.25], [127.75, 38.5], [127.97, 39.03], [128.5, 39.25], [129.03, 39.03], [129.25, 38.5], [129.15, 38.25], [129.18, 38.18], [129.53, 38.03], [129.75, 37.5], [129.65, 37.25], [129.75, 37.0], [129.53, 36.47], [129.18, 36.32], [129.15, 36.25], [129.25, 36.0], [129.03, 35.47], [128.5, 35.25], [128.25, 35.35], [128.18, 35.32], [128.03, 34.97], [127.68, 34.82], [127.65, 34.75], [127.75, 34.5], [127.53, 33.97], [127.0, 33.75], [126.75, 33.85], [126.68, 33.82], [126.53, 33.47], [126.18, 33.32], [126.03, 32.97], [125.68, 32.82], [125.53, 32.47], [125.0, 32.25], [124.47, 32.47], [124.25, 33.0], [124.35, 33.25], [124.32, 33.32], [123.97, 33.47], [123.75, 34.0], [123.85, 34.25], [123.75, 34.5], [123.85, 34.75]]]]}, "2010-09-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[123.85, 34.75], [123.75, 35.0], [123.97, 35.53], [124.32, 35.68], [124.35, 35.75], [124.25, 36.0], [124.47, 36.53], [124.82, 36.68], [124.97, 37.03], [125.5, 37.25], [125.75, 37.15], [125.88, 37.2], [125.75, 37.5], [125.85, 37.75], [125.75, 38.0], [125.97, 38.53], [126.5, 38.75], [127.03, 38.53], [127.18, 38.18], [127.25, 38.15], [127.5, 38.25], [127.75, 38.15], [127.82, 38.18], [127.85, 38.25], [127.75, 38.5], [127.97, 39.03], [128.5, 39.25], [129.03, 39.03], [129.25, 38.5], [129.15, 38.25], [129.18, 38.18], [129.53, 38.03], [129.75, 37.5], [129.65, 37.25], [129.75, 37.0], [129.53, 36.47], [129.18, 36.32], [129.15, 36.25], [129.25, 36.0], [129.03, 35.47], [128.5, 35.25], [128.25, 35.35], [128.18, 35.32], [128.03, 34.97], [127.68, 34.82], [127.65, 34.75], [127.75, 34.5], [127.53, 33.97], [127.0, 33.75], [126.75, 33.85], [126.68, 33.82], [126.53, 33.47], [126.18, 33.32], [126.03, 32.97], [125.68, 32.82], [125.53, 32.47], [125.0, 32.25], [124.47, 32.47], [124.25, 33.0], [124.35, 33.25], [124.32, 33.32], [123.97, 33.47], [123.75, 34.0], [123.85, 34.25], [123.75, 34.5], [123.85, 34.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.501272033993473}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.188294038650112}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.489154829330687, 15.939408228127206, 16.37812939096426]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.479415812886828, 10.912249067045025, 11.901621573153932]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.1898236621930223, -3.528670164402589, -2.8463882893547257]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.387494603714856, -6.501272033993473, -4.805950400863196]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.049484832567152, -2.2044345532382925, -1.7102007816439064]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.4736220340554564, -2.7671782375903184, -2.0301514093513817]}}