{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:52.914167", "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": "2019-Jun-17_to_2019-Jun-23_157.5_55.0"}, "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": 2019060000555}, "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 17 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 23 2019"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 120152.79503032284}, "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": 55.0}, "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": 157.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "157.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 155.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 160.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 52.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 58.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-06-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[156.47, 54.03], [156.82, 54.18], [156.85, 54.25], [156.75, 54.5], [156.85, 54.75], [156.75, 55.0], [156.97, 55.53], [157.5, 55.75], [157.75, 55.65], [157.82, 55.68], [157.97, 56.03], [158.5, 56.25], [159.03, 56.03], [159.18, 55.68], [159.25, 55.65], [159.5, 55.75], [159.75, 55.65], [160.0, 55.75], [160.53, 55.53], [160.68, 55.18], [161.03, 55.03], [161.25, 54.5], [161.03, 53.97], [160.5, 53.75], [160.25, 53.85], [160.0, 53.75], [159.75, 53.85], [159.68, 53.82], [159.65, 53.75], [159.75, 53.5], [159.53, 52.97], [159.0, 52.75], [158.75, 52.85], [158.5, 52.75], [158.25, 52.85], [158.18, 52.82], [158.15, 52.75], [158.25, 52.5], [158.03, 51.97], [157.5, 51.75], [156.97, 51.97], [156.82, 52.32], [156.47, 52.47], [156.25, 53.0], [156.35, 53.25], [156.25, 53.5], [156.47, 54.03]]]]}, "2019-06-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[156.35, 53.75], [156.25, 54.0], [156.35, 54.25], [156.25, 54.5], [156.47, 55.03], [156.82, 55.18], [156.97, 55.53], [157.5, 55.75], [157.75, 55.65], [157.82, 55.68], [157.97, 56.03], [158.5, 56.25], [159.03, 56.03], [159.18, 55.68], [159.25, 55.65], [159.5, 55.75], [159.75, 55.65], [160.0, 55.75], [160.25, 55.65], [160.5, 55.75], [161.03, 55.53], [161.25, 55.0], [161.15, 54.75], [161.25, 54.5], [161.03, 53.97], [160.5, 53.75], [160.25, 53.85], [160.0, 53.75], [159.75, 53.85], [159.68, 53.82], [159.65, 53.75], [159.75, 53.5], [159.53, 52.97], [159.0, 52.75], [158.75, 52.85], [158.5, 52.75], [158.25, 52.85], [158.18, 52.82], [158.15, 52.75], [158.25, 52.5], [158.03, 51.97], [157.5, 51.75], [156.97, 51.97], [156.82, 52.32], [156.47, 52.47], [156.25, 53.0], [156.35, 53.25], [156.25, 53.5], [156.35, 53.75]]]]}, "2019-06-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[155.35, 53.75], [155.25, 54.0], [155.47, 54.53], [155.82, 54.68], [155.85, 54.75], [155.82, 54.82], [155.47, 54.97], [155.25, 55.5], [155.35, 55.75], [155.25, 56.0], [155.47, 56.53], [155.82, 56.68], [155.97, 57.03], [156.5, 57.25], [156.75, 57.15], [157.0, 57.25], [157.25, 57.15], [157.5, 57.25], [158.03, 57.03], [158.18, 56.68], [158.53, 56.53], [158.68, 56.18], [158.75, 56.15], [159.0, 56.25], [159.25, 56.15], [159.5, 56.25], [160.03, 56.03], [160.18, 55.68], [160.25, 55.65], [160.5, 55.75], [161.03, 55.53], [161.25, 55.0], [161.15, 54.75], [161.25, 54.5], [161.03, 53.97], [160.5, 53.75], [160.25, 53.85], [160.0, 53.75], [159.75, 53.85], [159.68, 53.82], [159.65, 53.75], [159.75, 53.5], [159.53, 52.97], [159.0, 52.75], [158.75, 52.85], [158.5, 52.75], [158.25, 52.85], [158.18, 52.82], [158.15, 52.75], [158.25, 52.5], [158.03, 51.97], [157.5, 51.75], [156.97, 51.97], [156.82, 52.32], [156.75, 52.35], [156.5, 52.25], [156.25, 52.35], [156.0, 52.25], [155.47, 52.47], [155.25, 53.0], [155.35, 53.25], [155.25, 53.5], [155.35, 53.75]]]]}, "2019-06-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[155.35, 53.75], [155.25, 54.0], [155.35, 54.25], [155.25, 54.5], [155.35, 54.75], [155.25, 55.0], [155.35, 55.25], [155.25, 55.5], [155.35, 55.75], [155.25, 56.0], [155.35, 56.25], [155.25, 56.5], [155.47, 57.03], [156.0, 57.25], [156.25, 57.15], [156.5, 57.25], [156.75, 57.15], [157.0, 57.25], [157.25, 57.15], [157.5, 57.25], [157.75, 57.15], [158.0, 57.25], [158.53, 57.03], [158.75, 56.5], [158.65, 56.25], [158.68, 56.18], [158.75, 56.15], [159.0, 56.25], [159.25, 56.15], [159.5, 56.25], [160.03, 56.03], [160.18, 55.68], [160.25, 55.65], [160.5, 55.75], [161.03, 55.53], [161.25, 55.0], [161.15, 54.75], [161.25, 54.5], [161.03, 53.97], [160.5, 53.75], [160.25, 53.85], [160.0, 53.75], [159.75, 53.85], [159.5, 53.75], [159.25, 53.85], [159.0, 53.75], [158.75, 53.85], [158.68, 53.82], [158.65, 53.75], [158.75, 53.5], [158.53, 52.97], [158.0, 52.75], [157.75, 52.85], [157.68, 52.82], [157.53, 52.47], [157.0, 52.25], [156.75, 52.35], [156.5, 52.25], [156.25, 52.35], [156.0, 52.25], [155.47, 52.47], [155.25, 53.0], [155.35, 53.25], [155.25, 53.5], [155.35, 53.75]]]]}, "2019-06-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[155.35, 53.75], [155.25, 54.0], [155.35, 54.25], [155.25, 54.5], [155.35, 54.75], [155.25, 55.0], [155.35, 55.25], [155.25, 55.5], [155.35, 55.75], [155.25, 56.0], [155.35, 56.25], [155.25, 56.5], [155.47, 57.03], [156.0, 57.25], [156.25, 57.15], [156.32, 57.18], [156.47, 57.53], [157.0, 57.75], [157.25, 57.65], [157.32, 57.68], [157.47, 58.03], [158.0, 58.25], [158.25, 58.15], [158.32, 58.18], [158.47, 58.53], [159.0, 58.75], [159.25, 58.65], [159.5, 58.75], [160.03, 58.53], [160.25, 58.0], [160.03, 57.47], [159.68, 57.32], [159.65, 57.25], [159.75, 57.0], [159.53, 56.47], [159.18, 56.32], [159.13, 56.2], [159.25, 56.15], [159.5, 56.25], [160.03, 56.03], [160.18, 55.68], [160.25, 55.65], [160.5, 55.75], [161.03, 55.53], [161.25, 55.0], [161.15, 54.75], [161.25, 54.5], [161.03, 53.97], [160.5, 53.75], [160.25, 53.85], [160.0, 53.75], [159.75, 53.85], [159.5, 53.75], [159.25, 53.85], [159.0, 53.75], [158.47, 53.97], [158.32, 54.32], [158.0, 54.46], [157.68, 54.32], [157.65, 54.25], [157.75, 54.0], [157.65, 53.75], [157.75, 53.5], [157.53, 52.97], [157.18, 52.82], [157.03, 52.47], [156.5, 52.25], [156.25, 52.35], [156.0, 52.25], [155.47, 52.47], [155.25, 53.0], [155.35, 53.25], [155.25, 53.5], [155.35, 53.75]]]]}, "2019-06-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[155.35, 54.25], [155.25, 54.5], [155.35, 54.75], [155.25, 55.0], [155.35, 55.25], [155.25, 55.5], [155.35, 55.75], [155.25, 56.0], [155.35, 56.25], [155.25, 56.5], [155.47, 57.03], [156.0, 57.25], [156.25, 57.15], [156.32, 57.18], [156.47, 57.53], [157.0, 57.75], [157.25, 57.65], [157.32, 57.68], [157.47, 58.03], [158.0, 58.25], [158.25, 58.15], [158.32, 58.18], [158.47, 58.53], [159.0, 58.75], [159.25, 58.65], [159.5, 58.75], [160.03, 58.53], [160.25, 58.0], [160.03, 57.47], [159.68, 57.32], [159.65, 57.25], [159.75, 57.0], [159.53, 56.47], [159.18, 56.32], [159.03, 55.97], [158.68, 55.82], [158.65, 55.75], [158.75, 55.5], [158.53, 54.97], [158.18, 54.82], [158.03, 54.47], [157.68, 54.32], [157.65, 54.25], [157.75, 54.0], [157.65, 53.75], [157.75, 53.5], [157.53, 52.97], [157.0, 52.75], [156.75, 52.85], [156.5, 52.75], [156.25, 52.85], [156.0, 52.75], [155.47, 52.97], [155.25, 53.5], [155.35, 53.75], [155.25, 54.0], [155.35, 54.25]]]]}, "2019-06-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[155.35, 55.75], [155.25, 56.0], [155.35, 56.25], [155.25, 56.5], [155.47, 57.03], [156.0, 57.25], [156.25, 57.15], [156.32, 57.18], [156.47, 57.53], [157.0, 57.75], [157.25, 57.65], [157.32, 57.68], [157.47, 58.03], [158.0, 58.25], [158.25, 58.15], [158.32, 58.18], [158.47, 58.53], [159.0, 58.75], [159.25, 58.65], [159.5, 58.75], [160.03, 58.53], [160.25, 58.0], [160.03, 57.47], [159.68, 57.32], [159.65, 57.25], [159.75, 57.0], [159.53, 56.47], [159.18, 56.32], [159.03, 55.97], [158.68, 55.82], [158.65, 55.75], [158.75, 55.5], [158.53, 54.97], [158.18, 54.82], [158.03, 54.47], [157.68, 54.32], [157.65, 54.25], [157.75, 54.0], [157.53, 53.47], [157.18, 53.32], [157.03, 52.97], [156.5, 52.75], [155.97, 52.97], [155.75, 53.5], [155.85, 53.75], [155.75, 54.0], [155.88, 54.3], [155.47, 54.47], [155.25, 55.0], [155.35, 55.25], [155.25, 55.5], [155.35, 55.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.720138742256836}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.038751157083028}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [5.019828011199252, 5.265773524804445, 5.845097710096127, 5.940364214481747, 7.0938284548188335, 6.567397277399209, 7.039997108522073]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [2.5393593107654056, 2.00314655118558, 2.772130623310318, 2.388053805429365, 4.3017113602934955, 3.175307477539775, 4.0173699496071436]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.361210000076659, -4.263075344627615, -4.146761947150933, -4.24309582896275, -3.6074062446273305, -4.01574146667818, -3.8120403299475423]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.243436940523679, -5.720138742256836, -5.681721291081203, -5.637512530005154, -4.588790853032208, -5.334779879700193, -4.6661763781017385]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6235474302302229, -1.6222981641424932, -1.6864444759010937, -1.7900149474210572, -1.5567056399098052, -1.8244118919229884, -1.6904407378804818]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9051548585138147, -2.14360899203611, -2.1478547254826963, -2.5936231088929556, -2.045428390969449, -2.258973565675893, -2.091234733587237]}}