{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:38.950962", "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-Feb-25_to_2012-Feb-28_133.5_58.5"}, "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": 2012020001423}, "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": "February 25 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 28 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": 56074.51358333625}, "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": 58.5}, "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": 133.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "133.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 132.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 137.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 55.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 59.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-02-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.47, 59.03], [133.0, 59.25], [133.25, 59.15], [133.5, 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56.97], [137.0, 56.75], [136.75, 56.85], [136.68, 56.82], [136.54, 56.5], [136.68, 56.18], [137.03, 56.03], [137.25, 55.5], [137.03, 54.97], [136.5, 54.75], [135.97, 54.97], [135.82, 55.32], [135.47, 55.47], [135.32, 55.82], [135.25, 55.85], [135.0, 55.75], [134.47, 55.97], [134.32, 56.32], [134.25, 56.35], [134.0, 56.25], [133.75, 56.35], [133.5, 56.25], [132.97, 56.47], [132.75, 57.0], [132.85, 57.25], [132.82, 57.32], [132.47, 57.47], [132.25, 58.0], [132.35, 58.25], [132.25, 58.5], [132.47, 59.03]]]]}, "2012-02-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.47, 59.03], [133.0, 59.25], [133.25, 59.15], [133.5, 59.25], [133.75, 59.15], [133.82, 59.18], [133.97, 59.53], [134.5, 59.75], [134.75, 59.65], [134.82, 59.68], [134.97, 60.03], [135.5, 60.25], [136.03, 60.03], [136.25, 59.5], [136.15, 59.25], [136.25, 59.0], [136.15, 58.75], [136.18, 58.68], [136.25, 58.65], [136.5, 58.75], [137.03, 58.53], [137.18, 58.18], [137.53, 58.03], [137.75, 57.5], [137.53, 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"value": [-32.85638177997157, -32.019524830775936, -31.839554136713957, -29.576061408890382]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-35.387680340229934, -34.08328497513253, -33.0328549267025, -31.439662081982874]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-8.116961624837069, -8.572692697804591, -8.544572831114383, -6.85783621047281]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-9.030508576183905, -9.935195702113958, -10.3057755243357, -7.671241812991752]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4423025678255825, -1.5817208318185172, -1.6511113256947727, -1.412900560133077]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5878014571410883, -1.8782736557491913, -1.9921718585543948, -1.5698486080035055]}}