{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:10:23.127725", "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-Mar-25_to_2018-Mar-27_169.0_61.5"}, "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": 2018030001008}, "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": "March 25 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 27 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": 53618.14860118057}, "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": 61.5}, "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": 169.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "169.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 165.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 170.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 60.25}, "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": {"2018-03-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[165.25, 63.0], [165.47, 63.53], [166.0, 63.75], [166.25, 63.65], [166.5, 63.75], [166.75, 63.65], [167.0, 63.75], [167.25, 63.65], [167.5, 63.75], [167.75, 63.65], [168.0, 63.75], [168.25, 63.65], [168.5, 63.75], [168.75, 63.65], [169.0, 63.75], [169.25, 63.65], [169.5, 63.75], [170.03, 63.53], [170.25, 63.0], [170.13, 62.7], [170.53, 62.53], [170.75, 62.0], [170.65, 61.75], [170.75, 61.5], [170.53, 60.97], [170.18, 60.82], [170.15, 60.75], [170.25, 60.5], [170.03, 59.97], [169.5, 59.75], [168.97, 59.97], [168.82, 60.32], [168.75, 60.35], [168.5, 60.25], [167.97, 60.47], [167.82, 60.82], [167.75, 60.85], [167.5, 60.75], [167.25, 60.85], [167.0, 60.75], [166.75, 60.85], [166.5, 60.75], [166.25, 60.85], [166.0, 60.75], [165.75, 60.85], [165.5, 60.75], [164.97, 60.97], [164.75, 61.5], [164.97, 62.03], [165.32, 62.18], [165.46, 62.5], [165.25, 63.0]]]]}, "2018-03-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[165.25, 63.0], [165.47, 63.53], [166.0, 63.75], [166.25, 63.65], [166.5, 63.75], [166.75, 63.65], [167.0, 63.75], [167.25, 63.65], [167.5, 63.75], [167.75, 63.65], [168.0, 63.75], [168.25, 63.65], [168.5, 63.75], [168.75, 63.65], [169.0, 63.75], [169.25, 63.65], [169.5, 63.75], [170.03, 63.53], [170.25, 63.0], [170.13, 62.7], [170.53, 62.53], [170.75, 62.0], [170.65, 61.75], [170.75, 61.5], [170.53, 60.97], [170.18, 60.82], [170.15, 60.75], [170.25, 60.5], [170.03, 59.97], [169.5, 59.75], [168.97, 59.97], [168.82, 60.32], [168.75, 60.35], [168.5, 60.25], [167.97, 60.47], [167.82, 60.82], [167.75, 60.85], [167.5, 60.75], [167.25, 60.85], [167.0, 60.75], [166.75, 60.85], [166.5, 60.75], [166.25, 60.85], [166.0, 60.75], [165.75, 60.85], [165.5, 60.75], [164.97, 60.97], [164.75, 61.5], [164.97, 62.03], [165.32, 62.18], [165.46, 62.5], [165.25, 63.0]]]]}, "2018-03-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[165.25, 63.0], [165.47, 63.53], [166.0, 63.75], [166.25, 63.65], [166.5, 63.75], [166.75, 63.65], [167.0, 63.75], [167.25, 63.65], [167.5, 63.75], [167.75, 63.65], [168.0, 63.75], [168.25, 63.65], [168.5, 63.75], [168.75, 63.65], [169.0, 63.75], [169.25, 63.65], [169.5, 63.75], [170.03, 63.53], [170.25, 63.0], [170.13, 62.7], [170.53, 62.53], [170.75, 62.0], [170.65, 61.75], [170.75, 61.5], [170.53, 60.97], [170.18, 60.82], [170.15, 60.75], [170.25, 60.5], [170.03, 59.97], [169.5, 59.75], [168.97, 59.97], [168.82, 60.32], [168.75, 60.35], [168.5, 60.25], [167.97, 60.47], [167.82, 60.82], [167.75, 60.85], [167.5, 60.75], [167.25, 60.85], [167.0, 60.75], [166.75, 60.85], [166.5, 60.75], [166.25, 60.85], [166.0, 60.75], [165.75, 60.85], [165.5, 60.75], [164.97, 60.97], [164.75, 61.5], [164.97, 62.03], [165.32, 62.18], [165.46, 62.5], [165.25, 63.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -13.128302378160384}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -10.050373575581403}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-24.030164397721336, -24.7899547593712, -24.787711918130185]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-25.950396200998085, -26.454569984878276, -26.83753993562064]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-9.529658043817733, -10.290331211764459, -10.331131471162022]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-11.411519845541733, -11.861882622275175, -13.128302378160384]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5406234303042714, -1.6896920958234203, -1.729034422357713]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.802277383873733, -1.8971808029596908, -2.034889682492214]}}