{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:42.373906", "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": "2012-Jun-26_to_2012-Jun-29_67.5_54.0"}, "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": 2012060001353}, "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 26 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 29 2012"}, "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": 78486.89799456994}, "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": ["Kazakhstan", "Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Siberia"]}, "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": []}, "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": 54.0}, "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": 67.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "67.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 65.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 69.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 51.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 55.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-06-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[65.35, 54.75], [65.25, 55.0], [65.47, 55.53], [65.82, 55.68], [65.97, 56.03], [66.5, 56.25], [67.03, 56.03], [67.2, 55.63], [67.5, 55.75], [67.75, 55.65], [68.0, 55.75], [68.25, 55.65], [68.32, 55.68], [68.47, 56.03], [69.0, 56.25], [69.53, 56.03], [69.75, 55.5], [69.65, 55.25], [69.75, 55.0], [69.65, 54.75], [69.75, 54.5], [69.53, 53.97], [69.18, 53.82], [69.03, 53.47], [68.5, 53.25], [68.25, 53.35], [68.18, 53.32], [68.03, 52.97], [67.5, 52.75], [67.25, 52.85], [67.0, 52.75], [66.75, 52.85], [66.5, 52.75], [65.97, 52.97], [65.82, 53.32], [65.47, 53.47], [65.25, 54.0], [65.35, 54.25], [65.25, 54.5], [65.35, 54.75]]]]}, "2012-06-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[65.25, 54.0], [65.35, 54.25], [65.25, 54.5], [65.35, 54.75], [65.25, 55.0], [65.47, 55.53], [65.82, 55.68], [65.97, 56.03], [66.5, 56.25], [67.03, 56.03], [67.2, 55.63], [67.5, 55.75], [67.75, 55.65], [68.0, 55.75], [68.25, 55.65], [68.32, 55.68], [68.47, 56.03], [69.0, 56.25], [69.53, 56.03], [69.75, 55.5], [69.65, 55.25], [69.68, 55.18], [70.03, 55.03], [70.25, 54.5], [70.15, 54.25], [70.25, 54.0], [70.03, 53.47], [69.68, 53.32], [69.53, 52.97], [69.18, 52.82], [69.03, 52.47], [68.68, 52.32], [68.53, 51.97], [68.18, 51.82], [68.03, 51.47], [67.5, 51.25], [67.25, 51.35], [67.0, 51.25], [66.47, 51.47], [66.32, 51.82], [65.97, 51.97], [65.82, 52.32], [65.75, 52.35], [65.5, 52.25], [64.97, 52.47], [64.75, 53.0], [64.97, 53.53], [65.32, 53.68], [65.35, 53.75], [65.25, 54.0]]]]}, "2012-06-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[65.25, 54.0], [65.35, 54.25], [65.25, 54.5], [65.35, 54.75], [65.25, 55.0], [65.47, 55.53], [65.82, 55.68], [65.97, 56.03], [66.5, 56.25], [67.03, 56.03], [67.2, 55.63], [67.5, 55.75], [67.75, 55.65], [68.0, 55.75], [68.25, 55.65], [68.32, 55.68], [68.47, 56.03], [69.0, 56.25], [69.53, 56.03], [69.75, 55.5], [69.65, 55.25], [69.68, 55.18], [70.03, 55.03], [70.25, 54.5], [70.15, 54.25], [70.25, 54.0], [70.03, 53.47], [69.68, 53.32], [69.53, 52.97], [69.18, 52.82], [69.03, 52.47], [68.68, 52.32], [68.53, 51.97], [68.18, 51.82], [68.03, 51.47], [67.5, 51.25], [67.25, 51.35], [67.0, 51.25], [66.47, 51.47], [66.32, 51.82], [65.97, 51.97], [65.82, 52.32], [65.75, 52.35], [65.5, 52.25], [64.97, 52.47], [64.75, 53.0], [64.97, 53.53], [65.32, 53.68], [65.35, 53.75], [65.25, 54.0]]]]}, "2012-06-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[66.0, 54.25], [66.25, 54.15], [66.32, 54.18], [66.47, 54.53], [67.0, 54.75], [67.25, 54.65], [67.32, 54.68], [67.47, 55.03], [68.0, 55.25], [68.25, 55.15], [68.5, 55.25], [68.75, 55.15], [69.0, 55.25], [69.25, 55.15], [69.5, 55.25], [70.03, 55.03], [70.25, 54.5], [70.15, 54.25], [70.25, 54.0], [70.03, 53.47], [69.68, 53.32], [69.53, 52.97], [69.18, 52.82], [69.03, 52.47], [68.68, 52.32], [68.53, 51.97], [68.18, 51.82], [68.03, 51.47], [67.5, 51.25], [67.25, 51.35], [67.0, 51.25], [66.47, 51.47], [66.32, 51.82], [65.97, 51.97], [65.82, 52.32], [65.75, 52.35], [65.5, 52.25], [64.97, 52.47], [64.75, 53.0], [64.97, 53.53], [65.32, 53.68], [65.47, 54.03], [66.0, 54.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.12538630509556}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.45628287877562}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.792568577785858, 12.728492035710417, 12.407031749829628, 13.76647447819687]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.108347870502541, 11.716488504579843, 11.425348650333717, 12.123851853535086]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.758456656501677, -6.7772280426697575, -7.06301566473101, -5.66161125440131]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.290066618160267, -7.751086723215508, -8.12538630509556, -6.239008644166063]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5667964191075108, -1.8455172544366272, -1.9105003395072158, -1.5546635384810963]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6720088525792394, -2.0712373427940323, -2.18072399285807, -1.736370358801122]}}