{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:05:46.617044", "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": "2016-Jul-14_to_2016-Jul-16_135.5_48.5"}, "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": 2016070000538}, "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": "July 14 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 16 2016"}, "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": 54742.269720821634}, "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": ["China", "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": 48.5}, "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": 135.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "135.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 132.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 135.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 44.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 48.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-07-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[131.85, 46.25], [131.75, 46.5], [131.85, 46.75], [131.75, 47.0], [131.97, 47.53], [132.32, 47.68], [132.47, 48.03], [132.82, 48.18], [132.97, 48.53], [133.32, 48.68], [133.47, 49.03], [134.0, 49.25], [134.25, 49.15], [134.5, 49.25], [134.75, 49.15], [135.0, 49.25], [135.25, 49.15], [135.5, 49.25], [136.03, 49.03], [136.25, 48.5], [136.03, 47.97], [135.68, 47.82], [135.53, 47.47], [135.18, 47.32], [135.15, 47.25], [135.25, 47.0], [135.03, 46.47], [134.5, 46.25], [134.25, 46.35], [134.18, 46.32], [134.03, 45.97], [133.68, 45.82], [133.65, 45.75], [133.68, 45.68], [134.03, 45.53], [134.25, 45.0], [134.03, 44.47], [133.5, 44.25], [133.25, 44.35], [133.0, 44.25], [132.47, 44.47], [132.32, 44.82], [131.97, 44.97], [131.75, 45.5], [131.85, 45.75], [131.75, 46.0], [131.85, 46.25]]]]}, "2016-07-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[131.85, 46.25], [131.75, 46.5], [131.85, 46.75], [131.75, 47.0], [131.97, 47.53], [132.32, 47.68], [132.47, 48.03], [132.82, 48.18], [132.97, 48.53], [133.32, 48.68], [133.47, 49.03], [134.0, 49.25], [134.25, 49.15], [134.5, 49.25], [134.75, 49.15], [135.0, 49.25], [135.25, 49.15], [135.5, 49.25], [136.03, 49.03], [136.25, 48.5], [136.03, 47.97], [135.68, 47.82], [135.53, 47.47], [135.18, 47.32], [135.15, 47.25], [135.25, 47.0], [135.03, 46.47], [134.5, 46.25], [134.25, 46.35], [134.18, 46.32], [134.03, 45.97], [133.68, 45.82], [133.65, 45.75], [133.68, 45.68], [134.03, 45.53], [134.25, 45.0], [134.03, 44.47], [133.5, 44.25], [133.25, 44.35], [133.0, 44.25], [132.47, 44.47], [132.32, 44.82], [131.97, 44.97], [131.75, 45.5], [131.85, 45.75], [131.75, 46.0], [131.85, 46.25]]]]}, "2016-07-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[131.85, 46.25], [131.75, 46.5], [131.85, 46.75], [131.75, 47.0], [131.97, 47.53], [132.32, 47.68], [132.47, 48.03], [132.82, 48.18], [132.97, 48.53], [133.32, 48.68], [133.47, 49.03], [134.0, 49.25], [134.25, 49.15], [134.5, 49.25], [134.75, 49.15], [135.0, 49.25], [135.25, 49.15], [135.5, 49.25], [136.03, 49.03], [136.25, 48.5], [136.03, 47.97], [135.68, 47.82], [135.53, 47.47], [135.18, 47.32], [135.15, 47.25], [135.25, 47.0], [135.03, 46.47], [134.5, 46.25], [134.25, 46.35], [134.18, 46.32], [134.03, 45.97], [133.68, 45.82], [133.65, 45.75], [133.68, 45.68], [134.03, 45.53], [134.25, 45.0], [134.03, 44.47], [133.5, 44.25], [133.25, 44.35], [133.0, 44.25], [132.47, 44.47], [132.32, 44.82], [131.97, 44.97], [131.75, 45.5], [131.85, 45.75], [131.75, 46.0], [131.85, 46.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.737638938557268}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.256435277446548}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.812099101690023, 17.532793066826343, 18.39507710487038]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.635989810482045, 15.170840414390511, 17.536702599481146]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.3055602137608755, -4.64809207353156, -3.8156535450472098]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.170909652491616, -6.737638938557268, -4.586239168940381]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7723393032431536, -1.9273568251915931, -1.6280151607846685]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.281697457847809, -2.5331040733210988, -1.9134031772908084]}}