{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:10:04.372358", "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-Feb-02_to_2018-Feb-05_143.0_55.0"}, "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": 2018020000162}, "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 02 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 05 2018"}, "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": 54042.16461066222}, "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": 55.0}, "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": 143.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "143.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 138.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 143.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 52.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 55.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-02-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.47, 53.47], [138.25, 54.0], [138.47, 54.53], [139.0, 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56.03], [141.0, 56.25], [141.25, 56.15], [141.5, 56.25], [141.75, 56.15], [142.0, 56.25], [142.25, 56.15], [142.5, 56.25], [142.75, 56.15], [143.0, 56.25], [143.53, 56.03], [143.68, 55.68], [144.03, 55.53], [144.25, 55.0], [144.03, 54.47], [143.5, 54.25], [143.25, 54.35], [143.18, 54.32], [143.04, 54.0], [143.18, 53.68], [143.53, 53.53], [143.75, 53.0], [143.53, 52.47], [143.0, 52.25], [142.75, 52.35], [142.5, 52.25], [142.25, 52.35], [142.0, 52.25], [141.47, 52.47], [141.3, 52.88], [141.0, 52.75], [140.75, 52.85], [140.5, 52.75], [140.25, 52.85], [140.0, 52.75], [139.47, 52.97], [139.32, 53.32], [139.25, 53.35], [139.0, 53.25], [138.47, 53.47]]]]}, "2018-02-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.47, 53.47], [138.25, 54.0], [138.47, 54.53], [139.0, 54.75], [139.25, 54.65], [139.5, 54.75], [139.75, 54.65], [139.82, 54.68], [139.97, 55.03], [140.32, 55.18], [140.35, 55.25], [140.25, 55.5], [140.47, 56.03], [141.0, 56.25], [141.25, 56.15], [141.5, 56.25], 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-27.45998889840112, -25.265645752648567]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.952722559545071, -7.188417736182182, -6.7755093441689285, -7.106808718997141]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-10.817356562314473, -8.837223284913449, -8.164939776259047, -7.926022926180281]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4090323682616082, -1.4576956112107335, -1.392652985232117, -1.4534183127827254]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7851198354386433, -1.6502811137168876, -1.5873839904505849, -1.6383806790752287]}}