{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:42.434943", "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": "2018-Dec-22_to_2018-Dec-24_60.5_45.0"}, "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": 2018120000737}, "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": "December 22 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 24 2018"}, "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": 72105.17912651654}, "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", "Uzbekistan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Europe", "W.C.Asia", "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": 45.0}, "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": 60.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "60.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 57.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 63.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 43.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 46.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-12-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[57.47, 45.03], [58.0, 45.25], [58.25, 45.15], [58.32, 45.18], [58.47, 45.53], [58.82, 45.68], [58.97, 46.03], [59.5, 46.25], [59.75, 46.15], [59.82, 46.18], [59.97, 46.53], [60.5, 46.75], [60.75, 46.65], [61.0, 46.75], [61.25, 46.65], [61.5, 46.75], [61.75, 46.65], [62.0, 46.75], [62.25, 46.65], [62.5, 46.75], [63.03, 46.53], [63.18, 46.18], [63.53, 46.03], [63.75, 45.5], [63.53, 44.97], [63.18, 44.82], [63.03, 44.47], [62.5, 44.25], [62.25, 44.35], [62.0, 44.25], [61.75, 44.35], [61.68, 44.32], [61.53, 43.97], [61.0, 43.75], [60.75, 43.85], [60.68, 43.82], [60.53, 43.47], [60.0, 43.25], [59.75, 43.35], [59.5, 43.25], [59.25, 43.35], [59.0, 43.25], [58.75, 43.35], [58.5, 43.25], [58.25, 43.35], [58.0, 43.25], [57.47, 43.47], [57.25, 44.0], [57.35, 44.25], [57.25, 44.5], [57.47, 45.03]]]]}, "2018-12-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[57.47, 45.03], [58.0, 45.25], [58.25, 45.15], [58.32, 45.18], [58.47, 45.53], [58.82, 45.68], [58.97, 46.03], [59.5, 46.25], [59.75, 46.15], [59.82, 46.18], [59.97, 46.53], [60.5, 46.75], [60.75, 46.65], [61.0, 46.75], [61.25, 46.65], [61.5, 46.75], [61.75, 46.65], [62.0, 46.75], [62.25, 46.65], [62.5, 46.75], [63.03, 46.53], [63.18, 46.18], [63.53, 46.03], [63.75, 45.5], [63.53, 44.97], [63.18, 44.82], [63.03, 44.47], [62.5, 44.25], [62.25, 44.35], [62.0, 44.25], [61.75, 44.35], [61.68, 44.32], [61.53, 43.97], [61.0, 43.75], [60.75, 43.85], [60.68, 43.82], [60.53, 43.47], [60.0, 43.25], [59.75, 43.35], [59.5, 43.25], [59.25, 43.35], [59.0, 43.25], [58.75, 43.35], [58.5, 43.25], [58.25, 43.35], [58.0, 43.25], [57.47, 43.47], [57.25, 44.0], [57.35, 44.25], [57.25, 44.5], [57.47, 45.03]]]]}, "2018-12-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[57.47, 45.03], [58.0, 45.25], [58.25, 45.15], [58.32, 45.18], [58.47, 45.53], [58.82, 45.68], [58.97, 46.03], [59.5, 46.25], [59.75, 46.15], [59.82, 46.18], [59.97, 46.53], [60.5, 46.75], [60.75, 46.65], [61.0, 46.75], [61.25, 46.65], [61.5, 46.75], [61.75, 46.65], [62.0, 46.75], [62.25, 46.65], [62.5, 46.75], [63.03, 46.53], [63.18, 46.18], [63.53, 46.03], [63.75, 45.5], [63.53, 44.97], [63.18, 44.82], [63.03, 44.47], [62.5, 44.25], [62.25, 44.35], [62.0, 44.25], [61.75, 44.35], [61.68, 44.32], [61.53, 43.97], [61.0, 43.75], [60.75, 43.85], [60.68, 43.82], [60.53, 43.47], [60.0, 43.25], [59.75, 43.35], [59.5, 43.25], [59.25, 43.35], [59.0, 43.25], [58.75, 43.35], [58.5, 43.25], [58.25, 43.35], [58.0, 43.25], [57.47, 43.47], [57.25, 44.0], [57.35, 44.25], [57.25, 44.5], [57.47, 45.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -16.222332380778624}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -11.000424946708318}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-16.486447127242684, -18.172302693400184, -15.186863672713628]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-20.735392648034605, -22.896886134156688, -18.464859351810873]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-10.94410739046804, -12.540916365471755, -9.51625108418516]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-13.885106623255467, -16.222332380778624, -11.64849487446898]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9369501899241635, -2.258228053561949, -1.7629156294699821]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2072321430063355, -2.572376082519446, -2.23232338038779]}}