{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:04:36.825033", "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": "2016-Jan-27_to_2016-Jan-30_139.0_57.5"}, "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": 2016010000715}, "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": "January 27 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 30 2016"}, "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": 53731.32376308061}, "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": ["Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": ["Sea of Okhotsk"]}, "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": 57.5}, "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": 139.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "139.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 136.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 141.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 55.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 58.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-01-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.97, 59.03], [139.5, 59.25], [140.03, 59.03], [140.18, 58.68], [140.53, 58.53], [140.75, 58.0], [140.53, 57.47], [140.0, 57.25], [139.7, 57.38], [139.53, 56.97], [139.0, 56.75], [138.47, 56.97], [138.25, 57.5], [138.47, 58.03], [138.88, 58.2], [138.75, 58.5], [138.97, 59.03]]]]}, "2016-01-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[136.25, 56.5], [136.47, 57.03], [136.82, 57.18], [136.97, 57.53], [137.32, 57.68], [137.47, 58.03], [137.82, 58.18], [137.97, 58.53], [138.32, 58.68], [138.47, 59.03], [139.0, 59.25], [139.25, 59.15], [139.5, 59.25], [140.03, 59.03], [140.18, 58.68], [140.25, 58.65], [140.5, 58.75], [140.75, 58.65], [141.0, 58.75], [141.25, 58.65], [141.5, 58.75], [142.03, 58.53], [142.25, 58.0], [142.03, 57.47], [141.5, 57.25], [141.25, 57.35], [141.0, 57.25], [140.75, 57.35], [140.68, 57.32], [140.65, 57.25], [140.75, 57.0], [140.65, 56.75], [140.75, 56.5], [140.53, 55.97], [140.0, 55.75], [139.75, 55.85], [139.5, 55.75], [139.25, 55.85], [139.18, 55.82], [139.03, 55.47], [138.68, 55.32], [138.53, 54.97], [138.0, 54.75], [137.75, 54.85], [137.5, 54.75], [136.97, 54.97], [136.75, 55.5], [136.85, 55.75], [136.82, 55.82], [136.47, 55.97], [136.25, 56.5]]]]}, "2016-01-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[136.25, 56.5], [136.47, 57.03], [136.82, 57.18], [136.97, 57.53], [137.32, 57.68], [137.47, 58.03], [137.82, 58.18], [137.97, 58.53], [138.32, 58.68], [138.47, 59.03], [139.0, 59.25], [139.25, 59.15], [139.5, 59.25], [140.03, 59.03], [140.18, 58.68], [140.25, 58.65], [140.5, 58.75], [140.75, 58.65], [141.0, 58.75], [141.25, 58.65], [141.5, 58.75], [142.03, 58.53], [142.25, 58.0], [142.03, 57.47], [141.5, 57.25], [141.25, 57.35], [141.0, 57.25], [140.75, 57.35], [140.68, 57.32], [140.65, 57.25], [140.75, 57.0], [140.65, 56.75], [140.75, 56.5], [140.53, 55.97], [140.0, 55.75], [139.75, 55.85], [139.5, 55.75], [139.25, 55.85], [139.18, 55.82], [139.03, 55.47], [138.68, 55.32], [138.53, 54.97], [138.0, 54.75], [137.75, 54.85], [137.5, 54.75], [136.97, 54.97], [136.75, 55.5], [136.85, 55.75], [136.82, 55.82], [136.47, 55.97], [136.25, 56.5]]]]}, "2016-01-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[136.25, 56.5], [136.47, 57.03], [136.82, 57.18], [136.97, 57.53], [137.32, 57.68], [137.47, 58.03], [137.82, 58.18], [137.97, 58.53], [138.32, 58.68], [138.47, 59.03], [139.0, 59.25], [139.25, 59.15], [139.5, 59.25], [140.03, 59.03], [140.18, 58.68], [140.25, 58.65], [140.5, 58.75], [140.75, 58.65], [141.0, 58.75], [141.25, 58.65], [141.5, 58.75], [142.03, 58.53], [142.25, 58.0], [142.03, 57.47], [141.5, 57.25], [141.25, 57.35], [141.0, 57.25], [140.75, 57.35], [140.68, 57.32], [140.65, 57.25], [140.75, 57.0], [140.65, 56.75], [140.75, 56.5], [140.53, 55.97], [140.0, 55.75], [139.75, 55.85], [139.5, 55.75], [139.25, 55.85], [139.18, 55.82], [139.03, 55.47], [138.68, 55.32], [138.53, 54.97], [138.0, 54.75], [137.75, 54.85], [137.5, 54.75], [136.97, 54.97], [136.75, 55.5], [136.85, 55.75], [136.82, 55.82], [136.47, 55.97], [136.25, 56.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.366346278461947}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.476009691502209}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-34.85215766328034, -29.907477343018456, -30.530117211614822, -29.69259266430771]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-35.92508037533514, -38.37008184720412, -38.53900140260524, -38.61210922965276]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.4453175172580375, -7.137397525451485, -8.011924732664328, -7.281584207726198]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.6572363643411165, -9.306815527430388, -10.366346278461947, -9.405323960821192]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2212408276109075, -1.3771090206017031, -1.5761471035087948, -1.4606889550850242]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.265006625830277, -1.6004366849722245, -1.803092676362322, -1.6530289512675724]}}