{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:22.986336", "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-Sep-01_to_2012-Sep-03_141.5_62.0"}, "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": 2012090000166}, "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": "September 01 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 03 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": 80021.60604913604}, "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": 62.0}, "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": 141.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "141.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 136.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 142.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 57.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 63.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-09-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[136.47, 61.03], [137.0, 61.25], [137.25, 61.15], [137.5, 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60.0], [136.25, 60.5], [136.47, 61.03]]]]}, "2012-09-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[136.47, 61.03], [137.0, 61.25], [137.25, 61.15], [137.5, 61.25], [138.03, 61.03], [138.18, 60.68], [138.25, 60.65], [138.32, 60.68], [138.35, 60.75], [138.25, 61.0], [138.47, 61.53], [139.0, 61.75], [139.5, 61.54], [139.82, 61.68], [139.96, 62.0], [139.82, 62.32], [139.47, 62.47], [139.25, 63.0], [139.47, 63.53], [140.0, 63.75], [140.53, 63.53], [140.68, 63.18], [140.75, 63.15], [141.0, 63.25], [141.25, 63.15], [141.5, 63.25], [142.03, 63.03], [142.18, 62.68], [142.53, 62.53], [142.75, 62.0], [142.53, 61.47], [142.18, 61.32], [142.15, 61.25], [142.25, 61.0], [142.15, 60.75], [142.25, 60.5], [142.03, 59.97], [141.5, 59.75], [141.25, 59.85], [141.18, 59.82], [141.15, 59.75], [141.25, 59.5], [141.15, 59.25], [141.25, 59.0], [141.03, 58.47], [140.68, 58.32], [140.53, 57.97], [140.18, 57.82], [140.03, 57.47], [139.5, 57.25], [139.25, 57.35], [139.0, 57.25], [138.47, 57.47], [138.32, 57.82], [138.25, 57.85], [138.0, 57.75], [137.75, 57.85], [137.5, 57.75], [136.97, 57.97], [136.75, 58.5], [136.88, 58.8], [136.47, 58.97], [136.25, 59.5], [136.46, 60.0], [136.25, 60.5], [136.47, 61.03]]]]}, "2012-09-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[136.47, 61.03], [137.0, 61.25], [137.25, 61.15], [137.5, 61.25], [138.03, 61.03], [138.18, 60.68], [138.25, 60.65], [138.32, 60.68], [138.35, 60.75], [138.25, 61.0], [138.47, 61.53], [139.0, 61.75], [139.5, 61.54], [139.82, 61.68], [139.96, 62.0], [139.82, 62.32], [139.47, 62.47], [139.25, 63.0], [139.47, 63.53], [140.0, 63.75], [140.53, 63.53], [140.68, 63.18], [140.75, 63.15], [141.0, 63.25], [141.25, 63.15], [141.5, 63.25], [142.03, 63.03], [142.18, 62.68], [142.53, 62.53], [142.75, 62.0], [142.53, 61.47], [142.18, 61.32], [142.15, 61.25], [142.25, 61.0], [142.15, 60.75], [142.25, 60.5], [142.03, 59.97], [141.5, 59.75], [141.25, 59.85], [141.18, 59.82], [141.15, 59.75], [141.25, 59.5], 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-5.554399899126679, -6.273617691971992]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.3425247812110825, -5.0273325042047405, -4.167302831020928]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.677881148900099, -6.463958802185573, -6.720303556961994]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5906159844304542, -1.865568150340909, -1.4815037270970253]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.044585363955174, -2.0780274190962076, -1.945749620501779]}}