{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:55:51.458682", "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": "2025-Jun-27_to_2025-Jun-29_55.5_49.0"}, "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": 2025060000812}, "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 27 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 29 2025"}, "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": 61169.264365155606}, "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": ["E.Europe"]}, "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": 49.0}, "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": 55.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "55.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 51.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 56.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 48.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 52.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-06-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.25, 51.5], [51.47, 52.03], [52.0, 52.25], [52.3, 52.13], [52.47, 52.53], [53.0, 52.75], [53.25, 52.65], [53.5, 52.75], [53.75, 52.65], [54.0, 52.75], [54.25, 52.65], [54.5, 52.75], [55.03, 52.53], [55.25, 52.0], [55.03, 51.47], [54.68, 51.32], [54.65, 51.25], [54.75, 51.0], [54.65, 50.75], [54.75, 50.5], [54.63, 50.2], [55.0, 50.04], [55.5, 50.25], [55.75, 50.15], [56.0, 50.25], [56.53, 50.03], [56.75, 49.5], [56.65, 49.25], [56.75, 49.0], [56.53, 48.47], [56.0, 48.25], [55.75, 48.35], [55.5, 48.25], [55.25, 48.35], [55.0, 48.25], [54.75, 48.35], [54.5, 48.25], [54.25, 48.35], [54.0, 48.25], [53.75, 48.35], [53.5, 48.25], [53.25, 48.35], [53.0, 48.25], [52.47, 48.47], [52.25, 49.0], [52.35, 49.25], [52.25, 49.5], [52.35, 49.75], [52.32, 49.82], [51.97, 49.97], [51.75, 50.5], [51.85, 50.75], [51.82, 50.82], [51.47, 50.97], [51.25, 51.5]]]]}, "2025-06-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.25, 51.5], [51.47, 52.03], [52.0, 52.25], [52.3, 52.13], [52.47, 52.53], [53.0, 52.75], [53.25, 52.65], [53.5, 52.75], [53.75, 52.65], [54.0, 52.75], [54.25, 52.65], [54.5, 52.75], [55.03, 52.53], [55.25, 52.0], [55.03, 51.47], [54.68, 51.32], [54.65, 51.25], [54.75, 51.0], [54.65, 50.75], [54.75, 50.5], [54.63, 50.2], [55.0, 50.04], [55.5, 50.25], [55.75, 50.15], [56.0, 50.25], [56.53, 50.03], [56.75, 49.5], [56.65, 49.25], [56.75, 49.0], [56.53, 48.47], [56.0, 48.25], [55.75, 48.35], [55.5, 48.25], [55.25, 48.35], [55.0, 48.25], [54.75, 48.35], [54.5, 48.25], [54.25, 48.35], [54.0, 48.25], [53.75, 48.35], [53.5, 48.25], [53.25, 48.35], [53.0, 48.25], [52.47, 48.47], [52.25, 49.0], [52.35, 49.25], [52.25, 49.5], [52.35, 49.75], [52.32, 49.82], [51.97, 49.97], [51.75, 50.5], [51.85, 50.75], [51.82, 50.82], [51.47, 50.97], [51.25, 51.5]]]]}, "2025-06-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.25, 51.5], [51.47, 52.03], [52.0, 52.25], [52.3, 52.13], [52.47, 52.53], [53.0, 52.75], [53.25, 52.65], [53.5, 52.75], [53.75, 52.65], [54.0, 52.75], [54.25, 52.65], [54.5, 52.75], [55.03, 52.53], [55.25, 52.0], [55.03, 51.47], [54.68, 51.32], [54.65, 51.25], [54.75, 51.0], [54.65, 50.75], [54.75, 50.5], [54.63, 50.2], [55.0, 50.04], [55.5, 50.25], [55.75, 50.15], [56.0, 50.25], [56.53, 50.03], [56.75, 49.5], [56.65, 49.25], [56.75, 49.0], [56.53, 48.47], [56.0, 48.25], [55.75, 48.35], [55.5, 48.25], [55.25, 48.35], [55.0, 48.25], [54.75, 48.35], [54.5, 48.25], [54.25, 48.35], [54.0, 48.25], [53.75, 48.35], [53.5, 48.25], [53.25, 48.35], [53.0, 48.25], [52.47, 48.47], [52.25, 49.0], [52.35, 49.25], [52.25, 49.5], [52.35, 49.75], [52.32, 49.82], [51.97, 49.97], [51.75, 50.5], [51.85, 50.75], [51.82, 50.82], [51.47, 50.97], [51.25, 51.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.858199903506488}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.793541198649336}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.195390976116244, 16.924554238268172, 17.60313957788611]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.36073455810549, 15.884318288167321, 15.956815338134788]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.130735498766578, -6.458074401251088, -5.791813695930342]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.55582532162515, -7.858199903506488, -6.968805221129514]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3131404322021765, -1.6668591455005446, -1.5059479151579236]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4097549359860688, -1.9807400382559914, -1.74586721978151]}}