{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:24.666232", "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": "2015-Jul-13_to_2015-Jul-16_136.5_46.5"}, "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": 2015070000662}, "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": "July 13 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 16 2015"}, "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": 323229.748303056}, "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", "Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia", "E.Siberia", "Russian-Far-East"]}, "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": 46.5}, "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": 136.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "136.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 127.75}, "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": 43.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 51.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-07-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[129.0, 48.75], [129.25, 48.65], [129.5, 48.75], [129.75, 48.65], [130.0, 48.75], [130.25, 48.65], [130.5, 48.75], [130.75, 48.65], [131.0, 48.75], [131.25, 48.65], [131.5, 48.75], [131.75, 48.65], [131.82, 48.68], [131.97, 49.03], [132.5, 49.25], [132.75, 49.15], [133.0, 49.25], [133.25, 49.15], [133.5, 49.25], [133.75, 49.15], [134.0, 49.25], [134.25, 49.15], [134.32, 49.18], [134.35, 49.25], [134.25, 49.5], [134.47, 50.03], [135.0, 50.25], [135.25, 50.15], [135.5, 50.25], [135.75, 50.15], [136.0, 50.25], [136.25, 50.15], [136.5, 50.25], [136.75, 50.15], [136.82, 50.18], [136.97, 50.53], [137.32, 50.68], [137.35, 50.75], [137.25, 51.0], [137.47, 51.53], [137.82, 51.68], [137.97, 52.03], [138.5, 52.25], [139.03, 52.03], [139.18, 51.68], [139.25, 51.65], [139.32, 51.68], [139.47, 52.03], [140.0, 52.25], [140.53, 52.03], [140.68, 51.68], [141.03, 51.53], [141.25, 51.0], [141.15, 50.75], [141.25, 50.5], [141.03, 49.97], [140.68, 49.82], [140.65, 49.75], [140.75, 49.5], [140.65, 49.25], [140.75, 49.0], [140.65, 48.75], [140.75, 48.5], [140.53, 47.97], [140.0, 47.75], [139.75, 47.85], [139.5, 47.75], [139.25, 47.85], [139.13, 47.8], [139.25, 47.5], [139.03, 46.97], [138.5, 46.75], [138.25, 46.85], [138.18, 46.82], [138.03, 46.47], [137.68, 46.32], [137.53, 45.97], [137.0, 45.75], [136.75, 45.85], [136.5, 45.75], [135.97, 45.97], [135.75, 46.5], [135.97, 47.03], [136.5, 47.25], [136.75, 47.15], [136.82, 47.18], [136.97, 47.53], [137.32, 47.68], [137.47, 48.03], [137.88, 48.2], [137.82, 48.32], [137.75, 48.35], [137.5, 48.25], [137.25, 48.35], [137.0, 48.25], [136.5, 48.46], [136.0, 48.25], [135.75, 48.35], [135.68, 48.32], [135.53, 47.97], [135.0, 47.75], [134.75, 47.85], [134.68, 47.82], [134.53, 47.47], [134.0, 47.25], [133.75, 47.35], [133.68, 47.32], [133.65, 47.25], [133.75, 47.0], [133.65, 46.75], [133.75, 46.5], [133.53, 45.97], [133.18, 45.82], [133.03, 45.47], [132.5, 45.25], [132.25, 45.35], [132.0, 45.25], [131.75, 45.35], [131.68, 45.32], [131.53, 44.97], [131.0, 44.75], [130.5, 44.96], [130.0, 44.75], [129.47, 44.97], [129.25, 45.5], [129.35, 45.75], [129.25, 46.0], [129.47, 46.53], [129.82, 46.68], [129.85, 46.75], [129.75, 47.0], [129.88, 47.3], [129.75, 47.35], [129.5, 47.25], [129.25, 47.35], [129.18, 47.32], [129.03, 46.97], [128.5, 46.75], [127.97, 46.97], [127.75, 47.5], [127.97, 48.03], [128.32, 48.18], [128.47, 48.53], [129.0, 48.75]]]]}, "2015-07-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[127.35, 45.25], [127.25, 45.5], [127.47, 46.03], [128.0, 46.25], [128.25, 46.15], [128.5, 46.25], [128.75, 46.15], [129.0, 46.25], [129.25, 46.15], [129.32, 46.18], [129.47, 46.53], [129.82, 46.68], [129.85, 46.75], [129.75, 47.0], [129.88, 47.3], [129.75, 47.35], [129.5, 47.25], [129.25, 47.35], [129.18, 47.32], [129.03, 46.97], [128.5, 46.75], [127.97, 46.97], [127.75, 47.5], [127.97, 48.03], [128.32, 48.18], [128.47, 48.53], [129.0, 48.75], [129.25, 48.65], [129.5, 48.75], [129.75, 48.65], [130.0, 48.75], [130.25, 48.65], [130.5, 48.75], [130.75, 48.65], [131.0, 48.75], [131.25, 48.65], [131.5, 48.75], [131.75, 48.65], [131.82, 48.68], [131.97, 49.03], [132.5, 49.25], [132.75, 49.15], [133.0, 49.25], [133.25, 49.15], [133.5, 49.25], [133.75, 49.15], [134.0, 49.25], [134.25, 49.15], [134.32, 49.18], [134.35, 49.25], [134.25, 49.5], [134.47, 50.03], [135.0, 50.25], [135.25, 50.15], [135.5, 50.25], [135.75, 50.15], [136.0, 50.25], [136.25, 50.15], [136.5, 50.25], [136.75, 50.15], [136.82, 50.18], [136.97, 50.53], [137.32, 50.68], [137.35, 50.75], [137.25, 51.0], [137.47, 51.53], [137.82, 51.68], [137.97, 52.03], [138.5, 52.25], [139.03, 52.03], [139.18, 51.68], [139.25, 51.65], [139.32, 51.68], [139.47, 52.03], [140.0, 52.25], [140.53, 52.03], [140.68, 51.68], [141.03, 51.53], [141.25, 51.0], [141.15, 50.75], [141.25, 50.5], [141.03, 49.97], [140.68, 49.82], [140.65, 49.75], [140.75, 49.5], [140.65, 49.25], [140.75, 49.0], [140.65, 48.75], [140.75, 48.5], [140.53, 47.97], [140.0, 47.75], [139.75, 47.85], [139.5, 47.75], [139.25, 47.85], [139.13, 47.8], [139.25, 47.5], [139.03, 46.97], [138.5, 46.75], [138.25, 46.85], [138.18, 46.82], [138.15, 46.75], [138.25, 46.5], [138.15, 46.25], [138.25, 46.0], [138.15, 45.75], [138.25, 45.5], [138.03, 44.97], [137.5, 44.75], [137.25, 44.85], [137.18, 44.82], [137.03, 44.47], [136.5, 44.25], [135.97, 44.47], [135.8, 44.88], [135.5, 44.75], [135.25, 44.85], [135.0, 44.75], [134.75, 44.85], [134.63, 44.8], [134.75, 44.5], [134.65, 44.25], [134.75, 44.0], [134.53, 43.47], [134.18, 43.32], [134.03, 42.97], [133.5, 42.75], [133.25, 42.85], [133.0, 42.75], [132.47, 42.97], [132.32, 43.32], [131.97, 43.47], [131.82, 43.82], [131.75, 43.85], [131.5, 43.75], [131.25, 43.85], [131.18, 43.82], [131.03, 43.47], [130.5, 43.25], [129.97, 43.47], [129.82, 43.82], [129.75, 43.85], [129.68, 43.82], [129.53, 43.47], [129.0, 43.25], [128.75, 43.35], [128.5, 43.25], [127.97, 43.47], [127.82, 43.82], [127.47, 43.97], [127.25, 44.5], [127.35, 44.75], [127.25, 45.0], [127.35, 45.25]], [[135.82, 47.18], [135.85, 47.25], [135.75, 47.5], [135.97, 48.03], [136.32, 48.18], [136.43, 48.43], [136.0, 48.25], [135.75, 48.35], [135.68, 48.32], [135.53, 47.97], [135.0, 47.75], [134.75, 47.85], [134.68, 47.82], [134.53, 47.47], [134.0, 47.25], [133.75, 47.35], [133.68, 47.32], [133.65, 47.25], [133.75, 47.0], [133.65, 46.75], [133.75, 46.5], [133.63, 46.2], [134.0, 46.04], [134.5, 46.25], [134.75, 46.15], [134.82, 46.18], [134.97, 46.53], [135.32, 46.68], [135.47, 47.03], [135.82, 47.18]]]]}, "2015-07-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[127.35, 45.25], [127.25, 45.5], [127.47, 46.03], [128.0, 46.25], [128.25, 46.15], [128.5, 46.25], [128.75, 46.15], [129.0, 46.25], [129.25, 46.15], [129.32, 46.18], [129.47, 46.53], [129.82, 46.68], [129.85, 46.75], [129.75, 47.0], [129.88, 47.3], [129.75, 47.35], [129.5, 47.25], [129.25, 47.35], [129.18, 47.32], [129.03, 46.97], [128.5, 46.75], [127.97, 46.97], [127.75, 47.5], [127.97, 48.03], [128.32, 48.18], [128.47, 48.53], [129.0, 48.75], [129.25, 48.65], [129.5, 48.75], [129.75, 48.65], [130.0, 48.75], [130.25, 48.65], [130.5, 48.75], [130.75, 48.65], [131.0, 48.75], [131.25, 48.65], [131.5, 48.75], [131.75, 48.65], [131.82, 48.68], [131.97, 49.03], [132.5, 49.25], [132.75, 49.15], [133.0, 49.25], [133.25, 49.15], [133.5, 49.25], [133.75, 49.15], [134.0, 49.25], [134.25, 49.15], [134.32, 49.18], [134.35, 49.25], [134.25, 49.5], [134.47, 50.03], [135.0, 50.25], [135.25, 50.15], [135.5, 50.25], [135.75, 50.15], [136.0, 50.25], [136.25, 50.15], [136.5, 50.25], [136.75, 50.15], [136.82, 50.18], [136.97, 50.53], [137.32, 50.68], [137.35, 50.75], [137.25, 51.0], [137.47, 51.53], [137.82, 51.68], [137.97, 52.03], [138.5, 52.25], [139.03, 52.03], [139.18, 51.68], [139.25, 51.65], [139.32, 51.68], [139.47, 52.03], [140.0, 52.25], [140.53, 52.03], [140.68, 51.68], [141.03, 51.53], [141.25, 51.0], [141.15, 50.75], [141.25, 50.5], [141.03, 49.97], [140.68, 49.82], [140.65, 49.75], [140.75, 49.5], [140.65, 49.25], [140.75, 49.0], [140.65, 48.75], [140.75, 48.5], [140.53, 47.97], [140.0, 47.75], [139.75, 47.85], [139.5, 47.75], [139.25, 47.85], [139.13, 47.8], [139.25, 47.5], [139.03, 46.97], [138.5, 46.75], [138.25, 46.85], [138.18, 46.82], [138.15, 46.75], [138.25, 46.5], [138.15, 46.25], [138.25, 46.0], [138.15, 45.75], [138.25, 45.5], [138.03, 44.97], [137.5, 44.75], [137.25, 44.85], [137.18, 44.82], [137.03, 44.47], [136.5, 44.25], [135.97, 44.47], [135.8, 44.88], [135.5, 44.75], [135.25, 44.85], [135.0, 44.75], [134.75, 44.85], [134.63, 44.8], [134.75, 44.5], [134.65, 44.25], [134.75, 44.0], [134.53, 43.47], [134.18, 43.32], [134.03, 42.97], [133.5, 42.75], [133.25, 42.85], [133.0, 42.75], [132.47, 42.97], [132.32, 43.32], [131.97, 43.47], [131.82, 43.82], [131.75, 43.85], [131.5, 43.75], [131.25, 43.85], [131.18, 43.82], [131.03, 43.47], [130.5, 43.25], [129.97, 43.47], [129.82, 43.82], [129.75, 43.85], [129.68, 43.82], [129.53, 43.47], [129.0, 43.25], [128.75, 43.35], [128.5, 43.25], [127.97, 43.47], [127.82, 43.82], [127.47, 43.97], [127.25, 44.5], [127.35, 44.75], [127.25, 45.0], [127.35, 45.25]], [[135.82, 47.18], [135.85, 47.25], [135.75, 47.5], [135.97, 48.03], [136.32, 48.18], [136.43, 48.43], [136.0, 48.25], [135.75, 48.35], [135.68, 48.32], [135.53, 47.97], [135.0, 47.75], [134.75, 47.85], [134.68, 47.82], [134.53, 47.47], [134.0, 47.25], [133.75, 47.35], [133.68, 47.32], [133.65, 47.25], [133.75, 47.0], [133.65, 46.75], [133.75, 46.5], [133.63, 46.2], [134.0, 46.04], [134.5, 46.25], [134.75, 46.15], [134.82, 46.18], [134.97, 46.53], [135.32, 46.68], [135.47, 47.03], [135.82, 47.18]]]]}, "2015-07-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[127.35, 45.25], [127.25, 45.5], [127.47, 46.03], [128.0, 46.25], [128.25, 46.15], [128.5, 46.25], [128.75, 46.15], [129.0, 46.25], [129.25, 46.15], [129.32, 46.18], [129.47, 46.53], [130.0, 46.75], [130.25, 46.65], [130.5, 46.75], [131.03, 46.53], [131.18, 46.18], [131.25, 46.15], [131.5, 46.25], [131.75, 46.15], [132.0, 46.25], [132.53, 46.03], [132.7, 45.63], [132.82, 45.68], [132.97, 46.03], [133.5, 46.25], [134.0, 46.04], [134.5, 46.25], [134.75, 46.15], [134.82, 46.18], [134.97, 46.53], [135.32, 46.68], [135.47, 47.03], [135.82, 47.18], [135.85, 47.25], [135.75, 47.5], [135.97, 48.03], [136.32, 48.18], [136.47, 48.53], [136.82, 48.68], [136.97, 49.03], [137.5, 49.25], [138.03, 49.03], [138.25, 48.5], [138.04, 48.0], [138.25, 47.5], [138.15, 47.25], [138.25, 47.0], [138.15, 46.75], [138.25, 46.5], [138.15, 46.25], [138.25, 46.0], [138.15, 45.75], [138.25, 45.5], [138.03, 44.97], [137.5, 44.75], [137.25, 44.85], [137.18, 44.82], [137.03, 44.47], [136.5, 44.25], [135.97, 44.47], [135.8, 44.88], [135.5, 44.75], [135.25, 44.85], [135.0, 44.75], [134.75, 44.85], [134.63, 44.8], [134.75, 44.5], [134.65, 44.25], [134.75, 44.0], [134.53, 43.47], [134.18, 43.32], [134.03, 42.97], [133.5, 42.75], [133.25, 42.85], [133.0, 42.75], [132.47, 42.97], [132.32, 43.32], [131.97, 43.47], [131.82, 43.82], [131.75, 43.85], [131.5, 43.75], [131.25, 43.85], [131.18, 43.82], [131.03, 43.47], [130.5, 43.25], [129.97, 43.47], [129.82, 43.82], [129.75, 43.85], [129.68, 43.82], [129.53, 43.47], [129.0, 43.25], [128.75, 43.35], [128.5, 43.25], [127.97, 43.47], [127.82, 43.82], [127.47, 43.97], [127.25, 44.5], [127.35, 44.75], [127.25, 45.0], [127.35, 45.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.273531002687662}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.2558934606174255}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.212512766877296, 13.227734319134981, 14.601442747281567, 16.66577716251777]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.79203738400696, 6.552925507073098, 8.803767464462453, 12.31659890058637]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.452904871264161, -6.566237445971723, -5.290579998976115, -3.3079999041181956]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.105444276976186, -9.273531002687662, -7.44370510568632, -4.079244915154618]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5446238523592661, -2.5173969809076486, -2.1300123302631673, -1.4767554878515312]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9012725774803165, -3.710751371393872, -3.0808116276739286, -1.7587300777162718]}}