{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:57:17.882528", "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": "2014-Sep-17_to_2014-Sep-19_68.0_58.5"}, "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": 2014090000658}, "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 17 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 19 2014"}, "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": 53530.935432392165}, "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": ["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": 58.5}, "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": 68.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "68.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 66.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 69.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 56.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 62.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-09-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[66.75, 60.0], [66.85, 60.25], [66.82, 60.32], [66.47, 60.47], 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62.03], [67.32, 62.18], [67.47, 62.53], [68.0, 62.75], [68.53, 62.53], [68.68, 62.18], [69.03, 62.03], [69.25, 61.5], [69.15, 61.25], [69.25, 61.0], [69.15, 60.75], [69.25, 60.5], [69.15, 60.25], [69.18, 60.18], [69.53, 60.03], [69.75, 59.5], [69.65, 59.25], [69.75, 59.0], [69.65, 58.75], [69.75, 58.5], [69.65, 58.25], [69.75, 58.0], [69.53, 57.47], [69.18, 57.32], [69.15, 57.25], [69.25, 57.0], [69.15, 56.75], [69.25, 56.5], [69.03, 55.97], [68.5, 55.75], [68.25, 55.85], [68.0, 55.75], [67.47, 55.97], [67.25, 56.5], [67.35, 56.75], [67.25, 57.0], [67.35, 57.25], [67.25, 57.5], [67.46, 58.0], [67.32, 58.32], [67.25, 58.35], [67.0, 58.25], [66.47, 58.47], [66.25, 59.0], [66.47, 59.53], [66.82, 59.68], [66.85, 59.75], [66.75, 60.0]]]]}, "2014-09-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[66.75, 60.0], [66.85, 60.25], [66.82, 60.32], [66.47, 60.47], [66.25, 61.0], [66.47, 61.53], [66.82, 61.68], [66.97, 62.03], [67.32, 62.18], [67.47, 62.53], [68.0, 62.75], [68.53, 62.53], [68.68, 62.18], [69.03, 62.03], [69.25, 61.5], [69.15, 61.25], [69.25, 61.0], [69.15, 60.75], [69.25, 60.5], [69.15, 60.25], [69.18, 60.18], [69.53, 60.03], [69.75, 59.5], [69.65, 59.25], [69.75, 59.0], [69.65, 58.75], [69.75, 58.5], [69.65, 58.25], [69.75, 58.0], [69.53, 57.47], [69.18, 57.32], [69.15, 57.25], [69.25, 57.0], [69.15, 56.75], [69.25, 56.5], [69.03, 55.97], [68.5, 55.75], [68.25, 55.85], [68.0, 55.75], [67.47, 55.97], [67.25, 56.5], [67.35, 56.75], [67.25, 57.0], [67.35, 57.25], [67.25, 57.5], [67.46, 58.0], [67.32, 58.32], [67.25, 58.35], [67.0, 58.25], [66.47, 58.47], [66.25, 59.0], [66.47, 59.53], [66.82, 59.68], [66.85, 59.75], [66.75, 60.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.78846116947733}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.9406296633441125}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [3.087210189548557, 1.2797344408773483, 2.8856223646125727]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [2.1968899616194904, 0.8708717234699748, 1.817215806350248]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.51742944670446, -7.117669949169016, -5.186789594158851]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.870958282434913, -7.78846116947733, -6.087218407526336]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5907203016264817, -2.0224994030620915, -1.4284283683316648]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0214030392751523, -2.16572632784903, -1.6154916850169863]}}