{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:08:39.670945", "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": "2017-Aug-11_to_2017-Aug-13_78.0_51.0"}, "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": 2017080000378}, "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": "August 11 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 13 2017"}, "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": 51605.93209366421}, "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": ["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": 51.0}, "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": 78.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "78.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 77.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 79.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 49.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 53.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-08-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[76.97, 53.53], [77.5, 53.75], [77.75, 53.65], [77.82, 53.68], [77.97, 54.03], [78.5, 54.25], [78.75, 54.15], [79.0, 54.25], [79.53, 54.03], [79.68, 53.68], [80.03, 53.53], [80.25, 53.0], [80.03, 52.47], [79.68, 52.32], [79.65, 52.25], [79.68, 52.18], [80.03, 52.03], [80.25, 51.5], [80.03, 50.97], [79.68, 50.82], [79.53, 50.47], [79.18, 50.32], [79.03, 49.97], [78.68, 49.82], [78.65, 49.75], [78.75, 49.5], [78.53, 48.97], [78.0, 48.75], [77.75, 48.85], [77.5, 48.75], [76.97, 48.97], [76.75, 49.5], [76.97, 50.03], [77.32, 50.18], [77.35, 50.25], [77.25, 50.5], [77.35, 50.75], [77.32, 50.82], [76.97, 50.97], [76.75, 51.5], [76.96, 52.0], [76.75, 52.5], [76.85, 52.75], [76.75, 53.0], [76.97, 53.53]]]]}, "2017-08-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[76.97, 53.53], [77.5, 53.75], [77.75, 53.65], [77.82, 53.68], [77.97, 54.03], [78.5, 54.25], [78.75, 54.15], [79.0, 54.25], [79.53, 54.03], [79.68, 53.68], [80.03, 53.53], [80.25, 53.0], [80.03, 52.47], [79.68, 52.32], [79.65, 52.25], [79.68, 52.18], [80.03, 52.03], [80.25, 51.5], [80.03, 50.97], [79.68, 50.82], [79.53, 50.47], [79.18, 50.32], [79.03, 49.97], [78.68, 49.82], [78.65, 49.75], [78.75, 49.5], [78.53, 48.97], [78.0, 48.75], [77.75, 48.85], [77.5, 48.75], [76.97, 48.97], [76.75, 49.5], [76.97, 50.03], [77.32, 50.18], [77.35, 50.25], [77.25, 50.5], [77.35, 50.75], [77.32, 50.82], [76.97, 50.97], [76.75, 51.5], [76.96, 52.0], [76.75, 52.5], [76.85, 52.75], [76.75, 53.0], [76.97, 53.53]]]]}, "2017-08-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[76.97, 53.53], [77.5, 53.75], [77.75, 53.65], [77.82, 53.68], [77.97, 54.03], [78.5, 54.25], [78.75, 54.15], [79.0, 54.25], [79.53, 54.03], [79.68, 53.68], [80.03, 53.53], [80.25, 53.0], [80.03, 52.47], [79.68, 52.32], [79.65, 52.25], [79.68, 52.18], [80.03, 52.03], [80.25, 51.5], [80.03, 50.97], [79.68, 50.82], [79.53, 50.47], [79.18, 50.32], [79.03, 49.97], [78.68, 49.82], [78.65, 49.75], [78.75, 49.5], [78.53, 48.97], [78.0, 48.75], [77.75, 48.85], [77.5, 48.75], [76.97, 48.97], [76.75, 49.5], [76.97, 50.03], [77.32, 50.18], [77.35, 50.25], [77.25, 50.5], [77.35, 50.75], [77.32, 50.82], [76.97, 50.97], [76.75, 51.5], [76.96, 52.0], [76.75, 52.5], [76.85, 52.75], [76.75, 53.0], [76.97, 53.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.741486633586021}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.539121152422964}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.546408460923999, 11.654896701054213, 13.476586629349356]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.849037211227198, 9.508695717539638, 12.22459849439582]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.086512879906418, -7.792609995345042, -5.738240582017433]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.599207396227371, -8.741486633586021, -6.4896709579963385]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.629791405252865, -2.037167766167789, -1.4525759598377532]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9967482887612495, -2.291969350130609, -1.600782103097346]}}