{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:00.624237", "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-May-30_to_2015-Jun-07_140.5_54.5"}, "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": 2015050001019}, "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": "May 30 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 07 2015"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 9}, "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": 91872.84117450012}, "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": 54.5}, "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": 140.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "140.5\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": 144.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 53.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 57.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-05-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.5, 55.25], [138.03, 55.03], [138.25, 54.5], [138.15, 54.25], [138.25, 54.0], [138.03, 53.47], [137.5, 53.25], [136.97, 53.47], [136.75, 54.0], [136.85, 54.25], [136.75, 54.5], [136.97, 55.03], [137.5, 55.25]]], [[[139.25, 55.15], [139.5, 55.25], [140.03, 55.03], [140.18, 54.68], [140.53, 54.53], [140.75, 54.0], [140.53, 53.47], [140.0, 53.25], [139.75, 53.35], [139.5, 53.25], [138.97, 53.47], [138.82, 53.82], [138.47, 53.97], [138.25, 54.5], [138.47, 55.03], [139.0, 55.25], [139.25, 55.15]]]]}, "2015-05-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.5, 55.25], [138.03, 55.03], [138.25, 54.5], [138.15, 54.25], [138.25, 54.0], [138.03, 53.47], [137.5, 53.25], [136.97, 53.47], [136.75, 54.0], [136.85, 54.25], [136.75, 54.5], [136.97, 55.03], [137.5, 55.25]]], [[[139.25, 55.15], [139.5, 55.25], [139.75, 55.15], [140.0, 55.25], [140.25, 55.15], [140.5, 55.25], [141.03, 55.03], [141.25, 54.5], [141.03, 53.97], [140.68, 53.82], [140.53, 53.47], [140.0, 53.25], [139.75, 53.35], [139.5, 53.25], [138.97, 53.47], [138.82, 53.82], [138.47, 53.97], [138.25, 54.5], [138.47, 55.03], [139.0, 55.25], [139.25, 55.15]]]]}, "2015-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[136.47, 55.03], [136.82, 55.18], [136.97, 55.53], [137.5, 55.75], [138.03, 55.53], [138.25, 55.0], [138.15, 54.75], [138.18, 54.68], [138.25, 54.65], [138.32, 54.68], [138.47, 55.03], [139.0, 55.25], [139.25, 55.15], [139.5, 55.25], [139.75, 55.15], [140.0, 55.25], [140.25, 55.15], [140.5, 55.25], [141.03, 55.03], [141.25, 54.5], [141.03, 53.97], [140.68, 53.82], [140.53, 53.47], [140.0, 53.25], [139.75, 53.35], [139.5, 53.25], [139.25, 53.35], [139.0, 53.25], [138.75, 53.35], [138.5, 53.25], [138.25, 53.35], [138.0, 53.25], [137.75, 53.35], [137.5, 53.25], [137.25, 53.35], [137.0, 53.25], [136.47, 53.47], [136.25, 54.0], [136.35, 54.25], [136.25, 54.5], [136.47, 55.03]]]]}, "2015-06-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[136.82, 55.18], [136.97, 55.53], [137.5, 55.75], [138.03, 55.53], [138.25, 55.0], [138.15, 54.75], [138.18, 54.68], [138.25, 54.65], [138.32, 54.68], [138.47, 55.03], [139.0, 55.25], [139.25, 55.15], [139.5, 55.25], [139.75, 55.15], [140.0, 55.25], [140.25, 55.15], [140.5, 55.25], [140.75, 55.15], [141.0, 55.25], [141.53, 55.03], [141.75, 54.5], [141.65, 54.25], [141.75, 54.0], [141.65, 53.75], [141.75, 53.5], [141.53, 52.97], [141.0, 52.75], [140.47, 52.97], [140.32, 53.32], [140.25, 53.35], [140.0, 53.25], [139.75, 53.35], [139.5, 53.25], [139.25, 53.35], [139.0, 53.25], [138.75, 53.35], [138.5, 53.25], [138.25, 53.35], [138.0, 53.25], [137.75, 53.35], [137.5, 53.25], [137.25, 53.35], [137.0, 53.25], [136.47, 53.47], [136.25, 54.0], [136.35, 54.25], [136.25, 54.5], [136.47, 55.03], [136.82, 55.18]]], [[[142.25, 55.5], [142.47, 56.03], [143.0, 56.25], [143.25, 56.15], [143.5, 56.25], [144.03, 56.03], [144.25, 55.5], [144.03, 54.97], [143.5, 54.75], [143.25, 54.85], [143.0, 54.75], [142.47, 54.97], [142.25, 55.5]]]]}, "2015-06-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[136.47, 55.03], [136.82, 55.18], [136.97, 55.53], [137.5, 55.75], [138.03, 55.53], [138.25, 55.0], [138.13, 54.7], [138.25, 54.65], [138.32, 54.68], [138.47, 55.03], [139.0, 55.25], [139.25, 55.15], [139.5, 55.25], [139.75, 55.15], [140.0, 55.25], [140.25, 55.15], [140.5, 55.25], [140.75, 55.15], [140.82, 55.18], [140.97, 55.53], [141.38, 55.7], [141.25, 56.0], [141.47, 56.53], [141.82, 56.68], [141.97, 57.03], [142.5, 57.25], [142.75, 57.15], [142.82, 57.18], [142.97, 57.53], [143.5, 57.75], [144.03, 57.53], [144.18, 57.18], [144.53, 57.03], [144.75, 56.5], [144.65, 56.25], [144.75, 56.0], [144.53, 55.47], [144.18, 55.32], [144.03, 54.97], [143.5, 54.75], [143.25, 54.85], [143.0, 54.75], [142.75, 54.85], [142.68, 54.82], [142.53, 54.47], [142.18, 54.32], [142.03, 53.97], [141.68, 53.82], [141.65, 53.75], [141.75, 53.5], [141.53, 52.97], [141.0, 52.75], [140.47, 52.97], [140.32, 53.32], [140.25, 53.35], [140.0, 53.25], [139.75, 53.35], [139.5, 53.25], [139.25, 53.35], [139.0, 53.25], [138.75, 53.35], [138.5, 53.25], [138.25, 53.35], [138.0, 53.25], [137.75, 53.35], [137.5, 53.25], [137.25, 53.35], [137.0, 53.25], [136.47, 53.47], [136.25, 54.0], [136.35, 54.25], [136.25, 54.5], [136.47, 55.03]]]]}, "2015-06-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[136.47, 55.03], [136.82, 55.18], [136.97, 55.53], [137.5, 55.75], [137.75, 55.65], [138.0, 55.75], [138.53, 55.53], [138.7, 55.13], [139.0, 55.25], [139.25, 55.15], [139.32, 55.18], [139.47, 55.53], [140.0, 55.75], [139.47, 55.97], [139.25, 56.5], [139.47, 57.03], [140.0, 57.25], [140.25, 57.15], [140.5, 57.25], [140.75, 57.15], [141.0, 57.25], [141.25, 57.15], [141.5, 57.25], [141.75, 57.15], [142.0, 57.25], [142.25, 57.15], [142.5, 57.25], [142.75, 57.15], [142.82, 57.18], [142.97, 57.53], [143.5, 57.75], [144.03, 57.53], [144.18, 57.18], [144.53, 57.03], [144.75, 56.5], [144.65, 56.25], [144.75, 56.0], [144.53, 55.47], [144.18, 55.32], [144.03, 54.97], [143.5, 54.75], [143.25, 54.85], [143.0, 54.75], [142.75, 54.85], [142.68, 54.82], [142.53, 54.47], [142.18, 54.32], [142.03, 53.97], [141.68, 53.82], [141.65, 53.75], [141.75, 53.5], [141.53, 52.97], [141.0, 52.75], [140.47, 52.97], [140.32, 53.32], [140.25, 53.35], [140.0, 53.25], [139.75, 53.35], [139.5, 53.25], [139.25, 53.35], [139.0, 53.25], [138.75, 53.35], [138.5, 53.25], [138.25, 53.35], [138.0, 53.25], [137.75, 53.35], [137.5, 53.25], [137.25, 53.35], [137.0, 53.25], [136.47, 53.47], [136.25, 54.0], [136.35, 54.25], [136.25, 54.5], [136.47, 55.03]], [[140.25, 55.65], [140.5, 55.75], [140.25, 55.85], [140.0, 55.75], [140.25, 55.65]], [[140.75, 55.65], [141.0, 55.75], [140.75, 55.85], [140.5, 55.75], [140.75, 55.65]], [[141.25, 55.65], [141.32, 55.68], [141.35, 55.75], [141.32, 55.82], [141.25, 55.85], [141.0, 55.75], [141.25, 55.65]]]]}, "2015-06-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[136.47, 55.03], [136.82, 55.18], [136.97, 55.53], [137.5, 55.75], [137.75, 55.65], [138.0, 55.75], [138.53, 55.53], [138.7, 55.13], [139.0, 55.25], [139.25, 55.15], [139.32, 55.18], [139.47, 55.53], [140.0, 55.75], [139.47, 55.97], [139.25, 56.5], [139.47, 57.03], [140.0, 57.25], [140.25, 57.15], [140.5, 57.25], [140.75, 57.15], [141.0, 57.25], [141.25, 57.15], [141.5, 57.25], [141.75, 57.15], [142.0, 57.25], [142.25, 57.15], [142.5, 57.25], [142.75, 57.15], [142.82, 57.18], [142.97, 57.53], [143.5, 57.75], [144.03, 57.53], [144.18, 57.18], [144.53, 57.03], [144.75, 56.5], [144.65, 56.25], [144.68, 56.18], [145.03, 56.03], [145.25, 55.5], [145.03, 54.97], [144.68, 54.82], [144.65, 54.75], [144.75, 54.5], [144.65, 54.25], [144.75, 54.0], [144.53, 53.47], [144.0, 53.25], [143.47, 53.47], [143.25, 54.0], [143.35, 54.25], [143.32, 54.32], [143.25, 54.35], [143.0, 54.25], [142.5, 54.46], [142.18, 54.32], [142.03, 53.97], [141.68, 53.82], [141.65, 53.75], [141.75, 53.5], [141.53, 52.97], [141.0, 52.75], [140.47, 52.97], [140.32, 53.32], [140.25, 53.35], [140.0, 53.25], [139.75, 53.35], [139.5, 53.25], [139.25, 53.35], [139.0, 53.25], [138.75, 53.35], [138.5, 53.25], [138.25, 53.35], [138.0, 53.25], [137.75, 53.35], [137.5, 53.25], [137.25, 53.35], [137.0, 53.25], [136.47, 53.47], [136.25, 54.0], [136.35, 54.25], [136.25, 54.5], [136.47, 55.03]], [[140.25, 55.65], [140.5, 55.75], [140.25, 55.85], [140.0, 55.75], [140.25, 55.65]], [[140.75, 55.65], [141.0, 55.75], [140.75, 55.85], [140.5, 55.75], [140.75, 55.65]], [[141.25, 55.65], [141.32, 55.68], [141.35, 55.75], [141.32, 55.82], [141.25, 55.85], [141.0, 55.75], [141.25, 55.65]]]]}, "2015-06-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[136.47, 55.03], [136.82, 55.18], [136.97, 55.53], [137.5, 55.75], [137.75, 55.65], [138.0, 55.75], [138.53, 55.53], [138.7, 55.13], [139.0, 55.25], [139.25, 55.15], [139.32, 55.18], [139.47, 55.53], [140.0, 55.75], [139.47, 55.97], [139.25, 56.5], [139.47, 57.03], [140.0, 57.25], [140.25, 57.15], [140.5, 57.25], [140.75, 57.15], [141.0, 57.25], [141.25, 57.15], [141.5, 57.25], [141.75, 57.15], [142.0, 57.25], [142.25, 57.15], [142.5, 57.25], [142.75, 57.15], [143.0, 57.25], [143.25, 57.15], [143.5, 57.25], [143.75, 57.15], [144.0, 57.25], [144.53, 57.03], [144.75, 56.5], [144.65, 56.25], [144.68, 56.18], [145.03, 56.03], [145.25, 55.5], [145.03, 54.97], [144.68, 54.82], [144.65, 54.75], [144.75, 54.5], [144.65, 54.25], [144.75, 54.0], [144.53, 53.47], [144.0, 53.25], [143.47, 53.47], [143.25, 54.0], [143.35, 54.25], [143.32, 54.32], [143.25, 54.35], [143.0, 54.25], [142.5, 54.46], [142.18, 54.32], [142.03, 53.97], [141.68, 53.82], [141.65, 53.75], [141.75, 53.5], [141.53, 52.97], [141.0, 52.75], [140.47, 52.97], [140.32, 53.32], [140.25, 53.35], [140.0, 53.25], [139.75, 53.35], [139.5, 53.25], [139.25, 53.35], [139.0, 53.25], [138.75, 53.35], [138.5, 53.25], [138.25, 53.35], [138.0, 53.25], [137.75, 53.35], [137.5, 53.25], [137.25, 53.35], [137.0, 53.25], [136.47, 53.47], [136.25, 54.0], [136.35, 54.25], [136.25, 54.5], [136.47, 55.03]], [[140.25, 55.65], [140.5, 55.75], [140.25, 55.85], [140.0, 55.75], [140.25, 55.65]], [[140.75, 55.65], [141.0, 55.75], [140.75, 55.85], [140.5, 55.75], [140.75, 55.65]], [[141.25, 55.65], [141.32, 55.68], [141.35, 55.75], [141.32, 55.82], [141.25, 55.85], [141.0, 55.75], [141.25, 55.65]]]]}, "2015-06-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[139.97, 53.97], [139.75, 54.5], [139.97, 55.03], [140.5, 55.25], [141.03, 55.03], [141.25, 54.5], [141.03, 53.97], [140.5, 53.75], [139.97, 53.97]]], [[[141.97, 56.03], [142.32, 56.18], [142.47, 56.53], [143.0, 56.75], [143.25, 56.65], [143.5, 56.75], [143.75, 56.65], [144.0, 56.75], [144.53, 56.53], [144.68, 56.18], [145.03, 56.03], [145.25, 55.5], [145.03, 54.97], [144.68, 54.82], [144.65, 54.75], [144.75, 54.5], [144.65, 54.25], [144.75, 54.0], [144.53, 53.47], [144.0, 53.25], [143.47, 53.47], [143.25, 54.0], [143.35, 54.25], [143.32, 54.32], [143.25, 54.35], [143.0, 54.25], [142.47, 54.47], [142.32, 54.82], [141.97, 54.97], [141.75, 55.5], [141.97, 56.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.087849689481345}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.1490312329928516}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [0.9196591842079442, 0.7033642527774759, 1.0799667998595623, 1.147865965742767, 1.4115678830945626, 1.6693156321215383, 1.6451027293501284, 1.7884244751268739, 2.3124262676533363]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [0.33557744034362713, -0.14556401803088193, 0.19687502400603307, -0.11860316468658993, -0.23619991179828048, 0.049619978639498186, -0.10967378456689403, -0.9048669748674456, 1.770120183841584]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.715570871388915, -3.6324379637077655, -3.4463971501779116, -3.387183788798447, -2.9954356809287996, -3.0068067685696533, -3.21148472530436, -3.2740869851647547, -2.124078627520999]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.087849689481345, -7.15132910371733, -6.733072412157185, -6.27433670061464, -6.273422253430056, -7.798116474543747, -7.828815860164525, -6.2712977835105335, -2.5656344669101827]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3347950794955803, -1.4806017810933174, -1.2914738597099558, -1.4471741499205306, -1.6388134953269438, -1.6335283060459862, -1.8283706230258105, -1.8678475291455456, -1.7329239834168084]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8552168599728982, -1.7306514886678195, -1.6210703279934722, -1.96510640578751, -2.2622374342039144, -2.1997401489789965, -2.426766146233551, -2.774459872242475, -2.17799797540433]}}