{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:21.743801", "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": "2013-May-18_to_2013-May-20_68.5_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": 2013050000722}, "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 18 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 20 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 57453.9029160262}, "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": 54.5}, "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": 68.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "68.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 67.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 72.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 52.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 56.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-05-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[66.97, 54.53], [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], [69.38, 55.2], [69.25, 55.5], [69.47, 56.03], [69.82, 56.18], [69.97, 56.53], [70.5, 56.75], [70.75, 56.65], [71.0, 56.75], [71.25, 56.65], [71.5, 56.75], [71.75, 56.65], [72.0, 56.75], [72.53, 56.53], [72.75, 56.0], [72.65, 55.75], [72.75, 55.5], [72.53, 54.97], [72.18, 54.82], [72.03, 54.47], [71.5, 54.25], [71.25, 54.35], [71.18, 54.32], [71.03, 53.97], [70.68, 53.82], [70.53, 53.47], [70.18, 53.32], [70.03, 52.97], [69.68, 52.82], [69.53, 52.47], [69.0, 52.25], [68.75, 52.35], [68.5, 52.25], [68.25, 52.35], [68.0, 52.25], [67.75, 52.35], [67.5, 52.25], [66.97, 52.47], [66.75, 53.0], [66.96, 53.5], [66.75, 54.0], [66.97, 54.53]]]]}, "2013-05-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[66.97, 54.53], [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], [69.38, 55.2], [69.25, 55.5], [69.47, 56.03], [69.82, 56.18], [69.97, 56.53], [70.5, 56.75], [70.75, 56.65], [71.0, 56.75], [71.25, 56.65], [71.5, 56.75], [71.75, 56.65], [72.0, 56.75], [72.53, 56.53], [72.75, 56.0], [72.65, 55.75], [72.75, 55.5], [72.53, 54.97], [72.18, 54.82], [72.03, 54.47], [71.5, 54.25], [71.25, 54.35], [71.18, 54.32], [71.03, 53.97], [70.68, 53.82], [70.53, 53.47], [70.18, 53.32], [70.03, 52.97], [69.68, 52.82], [69.53, 52.47], [69.0, 52.25], [68.75, 52.35], [68.5, 52.25], [68.25, 52.35], [68.0, 52.25], [67.75, 52.35], [67.5, 52.25], [66.97, 52.47], [66.75, 53.0], [66.96, 53.5], [66.75, 54.0], [66.97, 54.53]]]]}, "2013-05-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[66.97, 54.53], [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], [69.38, 55.2], [69.25, 55.5], [69.47, 56.03], [69.82, 56.18], [69.97, 56.53], [70.5, 56.75], [70.75, 56.65], [71.0, 56.75], [71.25, 56.65], [71.5, 56.75], [71.75, 56.65], [72.0, 56.75], [72.53, 56.53], [72.75, 56.0], [72.65, 55.75], [72.75, 55.5], [72.53, 54.97], [72.18, 54.82], [72.03, 54.47], [71.5, 54.25], [71.25, 54.35], [71.18, 54.32], [71.03, 53.97], [70.68, 53.82], [70.53, 53.47], [70.18, 53.32], [70.03, 52.97], [69.68, 52.82], [69.53, 52.47], [69.0, 52.25], [68.75, 52.35], [68.5, 52.25], [68.25, 52.35], [68.0, 52.25], [67.75, 52.35], [67.5, 52.25], [66.97, 52.47], [66.75, 53.0], [66.96, 53.5], [66.75, 54.0], [66.97, 54.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.482417203228465}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -8.09450630976715}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [5.249836476165001, 3.72582350569553, 5.914787710355597]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.8225825353929963, 2.631153011546587, 4.881939478866286]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.874784774918943, -9.232468816441177, -7.176265337941311]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-9.056741791092122, -9.482417203228465, -7.898359302116717]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4616749372623234, -1.7847585812569278, -1.3998858835478492]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6957097785732897, -1.882379429987299, -1.5715771482190524]}}