{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:28.044733", "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": "2011-May-24_to_2011-May-27_157.5_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": 2011050001208}, "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 24 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 27 2011"}, "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": 63383.1543876098}, "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": []}, "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": 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": 156.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 161.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 51.25}, "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": {"2011-05-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[155.97, 53.53], [156.32, 53.68], [156.35, 53.75], [156.25, 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55.65], [160.5, 55.75], [160.75, 55.65], [161.0, 55.75], [161.53, 55.53], [161.75, 55.0], [161.53, 54.47], [161.0, 54.25], [160.75, 54.35], [160.68, 54.32], [160.53, 53.97], [160.0, 53.75], [159.75, 53.85], [159.5, 53.75], [159.25, 53.85], [159.18, 53.82], [159.15, 53.75], [159.25, 53.5], [159.03, 52.97], [158.63, 52.8], [158.75, 52.5], [158.53, 51.97], [158.18, 51.82], [158.03, 51.47], [157.68, 51.32], [157.53, 50.97], [157.0, 50.75], [156.47, 50.97], [156.25, 51.5], [156.38, 51.8], [155.97, 51.97], [155.75, 52.5], [155.85, 52.75], [155.75, 53.0], [155.97, 53.53]]]]}, "2011-05-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[155.97, 53.53], [156.32, 53.68], [156.35, 53.75], [156.25, 54.0], [156.35, 54.25], [156.25, 54.5], [156.35, 54.75], [156.25, 55.0], [156.47, 55.53], [157.0, 55.75], [157.25, 55.65], [157.32, 55.68], [157.47, 56.03], [158.0, 56.25], [158.25, 56.15], [158.5, 56.25], [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], [160.75, 55.65], [161.0, 55.75], [161.53, 55.53], [161.75, 55.0], [161.53, 54.47], [161.0, 54.25], [160.75, 54.35], [160.68, 54.32], [160.53, 53.97], [160.0, 53.75], [159.75, 53.85], [159.5, 53.75], [159.25, 53.85], [159.18, 53.82], [159.15, 53.75], [159.25, 53.5], [159.03, 52.97], [158.63, 52.8], [158.75, 52.5], [158.53, 51.97], [158.18, 51.82], [158.03, 51.47], [157.68, 51.32], [157.53, 50.97], [157.0, 50.75], [156.47, 50.97], [156.25, 51.5], [156.38, 51.8], [155.97, 51.97], [155.75, 52.5], [155.85, 52.75], [155.75, 53.0], [155.97, 53.53]]]]}, "2011-05-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[156.35, 54.75], [156.25, 55.0], [156.47, 55.53], [157.0, 55.75], [157.25, 55.65], [157.32, 55.68], [157.47, 56.03], [158.0, 56.25], [158.25, 56.15], [158.5, 56.25], [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], [160.75, 55.65], 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"description": "The daily evolution of maximum t2m.", "value": [-1.2101941203299589, -2.1463260927890246, -2.5493170397995186, -2.3511577171622093]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.165897609848571, -3.023036677420888, -3.6749592737570618, -3.071287096167892]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.6372451576197022, -4.4618310365266325, -4.7352792534849755, -3.964525082104444]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3480927404109062, -1.5426891788458943, -1.8800639521492086, -1.425346638523482]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.623331257654002, -2.2709223611900407, -2.415956514829972, -1.8378490365673281]}}