{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:24.794521", "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-Jan-30_to_2012-Feb-01_54.0_63.5"}, "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": 2012010001579}, "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": "January 30 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 01 2012"}, "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": 55455.93269111434}, "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": ["E.Europe", "Russian-Arctic"]}, "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": 63.5}, "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": 54.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "54.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 52.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 58.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 62.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 65.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-01-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[53.32, 64.68], [53.47, 65.03], [54.0, 65.25], [54.25, 65.15], [54.32, 65.18], [54.47, 65.53], [55.0, 65.75], [55.25, 65.65], [55.5, 65.75], [55.75, 65.65], [55.82, 65.68], [55.97, 66.03], [56.5, 66.25], [57.03, 66.03], [57.18, 65.68], [57.25, 65.65], [57.5, 65.75], [58.03, 65.53], [58.18, 65.18], [58.53, 65.03], [58.75, 64.5], [58.65, 64.25], [58.75, 64.0], [58.53, 63.47], [58.18, 63.32], [58.03, 62.97], [57.68, 62.82], [57.53, 62.47], [57.0, 62.25], [56.75, 62.35], [56.5, 62.25], [56.25, 62.35], [56.0, 62.25], [55.75, 62.35], [55.5, 62.25], [54.97, 62.47], [54.82, 62.82], [54.75, 62.85], [54.68, 62.82], [54.53, 62.47], [54.0, 62.25], [53.47, 62.47], [53.32, 62.82], [53.25, 62.85], [53.0, 62.75], [52.47, 62.97], [52.25, 63.5], [52.47, 64.03], [52.82, 64.18], [52.97, 64.53], [53.32, 64.68]]]]}, "2012-01-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[53.32, 64.68], [53.47, 65.03], [54.0, 65.25], [54.25, 65.15], [54.32, 65.18], [54.47, 65.53], [55.0, 65.75], [55.25, 65.65], [55.5, 65.75], [55.75, 65.65], [55.82, 65.68], [55.97, 66.03], [56.5, 66.25], [57.03, 66.03], [57.18, 65.68], [57.25, 65.65], [57.5, 65.75], [58.03, 65.53], [58.18, 65.18], [58.53, 65.03], [58.75, 64.5], [58.65, 64.25], [58.75, 64.0], [58.53, 63.47], [58.18, 63.32], [58.03, 62.97], [57.68, 62.82], [57.53, 62.47], [57.0, 62.25], [56.75, 62.35], [56.5, 62.25], [56.25, 62.35], [56.0, 62.25], [55.75, 62.35], [55.5, 62.25], [54.97, 62.47], [54.82, 62.82], [54.75, 62.85], [54.68, 62.82], [54.53, 62.47], [54.0, 62.25], [53.47, 62.47], [53.32, 62.82], [53.25, 62.85], [53.0, 62.75], [52.47, 62.97], [52.25, 63.5], [52.47, 64.03], [52.82, 64.18], [52.97, 64.53], [53.32, 64.68]]]]}, "2012-02-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[53.32, 64.68], [53.47, 65.03], [54.0, 65.25], [54.25, 65.15], [54.32, 65.18], [54.47, 65.53], [55.0, 65.75], [55.25, 65.65], [55.5, 65.75], [55.75, 65.65], [55.82, 65.68], [55.97, 66.03], [56.5, 66.25], [57.03, 66.03], [57.18, 65.68], [57.25, 65.65], [57.5, 65.75], [58.03, 65.53], [58.18, 65.18], [58.53, 65.03], [58.75, 64.5], [58.65, 64.25], [58.75, 64.0], [58.53, 63.47], [58.18, 63.32], [58.03, 62.97], [57.68, 62.82], [57.53, 62.47], [57.0, 62.25], [56.75, 62.35], [56.5, 62.25], [56.25, 62.35], [56.0, 62.25], [55.75, 62.35], [55.5, 62.25], [54.97, 62.47], [54.82, 62.82], [54.75, 62.85], [54.68, 62.82], [54.53, 62.47], [54.0, 62.25], [53.47, 62.47], [53.32, 62.82], [53.25, 62.85], [53.0, 62.75], [52.47, 62.97], [52.25, 63.5], [52.47, 64.03], [52.82, 64.18], [52.97, 64.53], [53.32, 64.68]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -16.984837612344734}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -13.637513464232105}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-30.820109777538363, -32.02043740932368, -30.581074719973486]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-33.604715322917315, -35.442451388996034, -32.248242348686404]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-13.074067706069282, -14.537772905362836, -13.300699781264187]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-14.883581960979058, -16.984837612344734, -14.94873178989792]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5082080544692364, -1.6794415637269178, -1.5186971550662218]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6754395069795238, -1.9121153515569782, -1.7735623079559542]}}