{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:35.501369", "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-Oct-15_to_2012-Oct-17_357.0_57.5"}, "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": 2012100000629}, "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": "October 15 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 17 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": 52005.37483862428}, "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": ["United Kingdom"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Europe"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe"]}, "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": ["Inner Seas off the West Coast of Scotland"]}, "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": 57.5}, "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": 357.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "357.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 352.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 358.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 55.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 58.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-10-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.75, 58.0], [-7.53, 58.53], [-7.0, 58.75], [-6.75, 58.65], [-6.5, 58.75], [-5.97, 58.53], [-5.8, 58.12], [-5.68, 58.18], [-5.53, 58.53], [-5.0, 58.75], [-4.75, 58.65], [-4.5, 58.75], [-4.25, 58.65], [-4.0, 58.75], [-3.47, 58.53], [-3.32, 58.18], [-3.25, 58.15], [-3.0, 58.25], [-2.75, 58.15], [-2.5, 58.25], [-2.25, 58.15], [-2.0, 58.25], [-1.47, 58.03], [-1.25, 57.5], [-1.47, 56.97], [-1.82, 56.82], [-1.97, 56.47], [-2.32, 56.32], [-2.47, 55.97], [-3.0, 55.75], [-3.25, 55.85], [-3.5, 55.75], [-3.75, 55.85], [-3.82, 55.82], [-3.97, 55.47], [-4.5, 55.25], [-4.75, 55.35], [-5.0, 55.25], [-5.53, 55.47], [-5.68, 55.82], [-5.75, 55.85], [-6.0, 55.75], [-6.53, 55.97], [-6.75, 56.5], [-6.65, 56.75], [-6.68, 56.82], [-7.03, 56.97], [-7.18, 57.32], [-7.53, 57.47], [-7.75, 58.0]]]]}, "2012-10-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.75, 58.0], [-7.53, 58.53], [-7.0, 58.75], [-6.75, 58.65], [-6.5, 58.75], [-5.97, 58.53], [-5.8, 58.12], [-5.68, 58.18], [-5.53, 58.53], [-5.0, 58.75], [-4.75, 58.65], [-4.5, 58.75], [-4.25, 58.65], [-4.0, 58.75], [-3.47, 58.53], [-3.32, 58.18], [-3.25, 58.15], [-3.0, 58.25], [-2.75, 58.15], [-2.5, 58.25], [-2.25, 58.15], [-2.0, 58.25], [-1.47, 58.03], [-1.25, 57.5], [-1.47, 56.97], [-1.82, 56.82], [-1.97, 56.47], [-2.32, 56.32], [-2.47, 55.97], [-3.0, 55.75], [-3.25, 55.85], [-3.5, 55.75], [-3.75, 55.85], [-3.82, 55.82], [-3.97, 55.47], [-4.5, 55.25], [-4.75, 55.35], [-5.0, 55.25], [-5.53, 55.47], [-5.68, 55.82], [-5.75, 55.85], [-6.0, 55.75], [-6.53, 55.97], [-6.75, 56.5], [-6.65, 56.75], [-6.68, 56.82], [-7.03, 56.97], [-7.18, 57.32], [-7.53, 57.47], [-7.75, 58.0]]]]}, "2012-10-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.75, 58.0], [-7.53, 58.53], [-7.0, 58.75], [-6.75, 58.65], [-6.5, 58.75], [-5.97, 58.53], [-5.8, 58.12], [-5.68, 58.18], [-5.53, 58.53], [-5.0, 58.75], [-4.75, 58.65], [-4.5, 58.75], [-4.25, 58.65], [-4.0, 58.75], [-3.47, 58.53], [-3.32, 58.18], [-3.25, 58.15], [-3.0, 58.25], [-2.75, 58.15], [-2.5, 58.25], [-2.25, 58.15], [-2.0, 58.25], [-1.47, 58.03], [-1.25, 57.5], [-1.47, 56.97], [-1.82, 56.82], [-1.97, 56.47], [-2.32, 56.32], [-2.47, 55.97], [-3.0, 55.75], [-3.25, 55.85], [-3.5, 55.75], [-3.75, 55.85], [-3.82, 55.82], [-3.97, 55.47], [-4.5, 55.25], [-4.75, 55.35], [-5.0, 55.25], [-5.53, 55.47], [-5.68, 55.82], [-5.75, 55.85], [-6.0, 55.75], [-6.53, 55.97], [-6.75, 56.5], [-6.65, 56.75], [-6.68, 56.82], [-7.03, 56.97], [-7.18, 57.32], [-7.53, 57.47], [-7.75, 58.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.767694517861003}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.958860674351128}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [4.026390837622728, 2.95249465397535, 3.028536810076446]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [1.3609664472032819, 0.039566502880973076, -0.08547813885053301]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.44472765571645, -5.344406172123141, -5.087448195213795]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.2462816853230265, -6.692384448098039, -6.767694517861003]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.796882412378907, -2.072543150232799, -1.907617706641349]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.178186827400545, -2.571592172687129, -2.319633853026061]}}