{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:06:36.791581", "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-Nov-23_to_2016-Nov-27_350.0_52.0"}, "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": 2016110000786}, "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": "November 23 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 27 2016"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 51692.64937349739}, "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": ["Ireland", "United Kingdom"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Atlantic-Ocean", "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": ["North Atlantic Ocean"]}, "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": 52.0}, "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": 350.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "350.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 348.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 353.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 51.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 54.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-11-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-10.53, 52.53], [-10.18, 52.68], [-10.15, 52.75], [-10.18, 52.82], [-10.53, 52.97], [-10.75, 53.5], [-10.53, 54.03], [-10.18, 54.18], [-10.03, 54.53], [-9.5, 54.75], [-9.25, 54.65], [-9.18, 54.68], [-9.03, 55.03], [-8.5, 55.25], [-8.25, 55.15], [-8.0, 55.25], [-7.75, 55.15], [-7.5, 55.25], [-7.25, 55.15], [-7.0, 55.25], [-6.47, 55.03], [-6.25, 54.5], [-6.47, 53.97], [-6.82, 53.82], [-6.97, 53.47], [-7.32, 53.32], [-7.47, 52.97], [-8.0, 52.75], [-8.25, 52.85], [-8.32, 52.82], [-8.47, 52.47], [-8.82, 52.32], [-8.97, 51.97], [-9.32, 51.82], [-9.35, 51.75], [-9.25, 51.5], [-9.47, 50.97], [-10.0, 50.75], [-10.53, 50.97], [-10.75, 51.5], [-10.65, 51.75], [-10.75, 52.0], [-10.53, 52.53]]]]}, "2016-11-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-11.75, 53.5], [-11.53, 54.03], [-11.0, 54.25], [-10.75, 54.15], [-10.68, 54.18], [-10.53, 54.53], [-10.0, 54.75], [-9.75, 54.65], [-9.5, 54.75], [-9.25, 54.65], [-9.18, 54.68], [-9.03, 55.03], [-8.5, 55.25], [-8.25, 55.15], [-8.0, 55.25], [-7.75, 55.15], [-7.5, 55.25], [-7.25, 55.15], [-7.0, 55.25], [-6.47, 55.03], [-6.25, 54.5], [-6.47, 53.97], [-6.82, 53.82], [-6.97, 53.47], [-7.32, 53.32], [-7.47, 52.97], [-8.0, 52.75], [-8.25, 52.85], [-8.32, 52.82], [-8.47, 52.47], [-8.82, 52.32], [-8.97, 51.97], [-9.32, 51.82], [-9.35, 51.75], [-9.25, 51.5], [-9.47, 50.97], [-10.0, 50.75], [-10.25, 50.85], [-10.5, 50.75], [-11.03, 50.97], [-11.25, 51.5], [-11.15, 51.75], [-11.25, 52.0], [-11.15, 52.25], [-11.25, 52.5], [-11.15, 52.75], [-11.18, 52.82], [-11.53, 52.97], [-11.75, 53.5]]]]}, "2016-11-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-11.75, 53.5], [-11.53, 54.03], [-11.0, 54.25], [-10.75, 54.15], [-10.68, 54.18], [-10.53, 54.53], [-10.0, 54.75], [-9.75, 54.65], [-9.5, 54.75], [-9.25, 54.65], [-9.18, 54.68], [-9.03, 55.03], [-8.5, 55.25], [-8.25, 55.15], [-8.0, 55.25], [-7.75, 55.15], [-7.5, 55.25], [-7.25, 55.15], [-7.0, 55.25], [-6.47, 55.03], [-6.25, 54.5], [-6.47, 53.97], [-6.82, 53.82], [-6.97, 53.47], [-7.32, 53.32], [-7.47, 52.97], [-8.0, 52.75], [-8.25, 52.85], [-8.32, 52.82], [-8.47, 52.47], [-8.82, 52.32], [-8.97, 51.97], [-9.32, 51.82], [-9.35, 51.75], [-9.25, 51.5], [-9.47, 50.97], [-10.0, 50.75], [-10.25, 50.85], [-10.5, 50.75], [-11.03, 50.97], [-11.25, 51.5], [-11.15, 51.75], [-11.25, 52.0], [-11.15, 52.25], [-11.25, 52.5], [-11.15, 52.75], [-11.18, 52.82], [-11.53, 52.97], [-11.75, 53.5]]]]}, "2016-11-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-11.75, 53.5], [-11.53, 54.03], [-11.0, 54.25], [-10.75, 54.15], [-10.68, 54.18], [-10.53, 54.53], [-10.0, 54.75], [-9.75, 54.65], [-9.5, 54.75], [-9.25, 54.65], [-9.0, 54.75], [-8.75, 54.65], [-8.5, 54.75], [-7.97, 54.53], [-7.75, 54.0], [-7.97, 53.47], [-8.32, 53.32], [-8.47, 52.97], [-8.82, 52.82], [-8.85, 52.75], [-8.75, 52.5], [-8.97, 51.97], [-9.32, 51.82], [-9.35, 51.75], [-9.25, 51.5], [-9.47, 50.97], [-10.0, 50.75], [-10.25, 50.85], [-10.5, 50.75], [-11.03, 50.97], [-11.25, 51.5], [-11.15, 51.75], [-11.25, 52.0], [-11.15, 52.25], [-11.25, 52.5], [-11.15, 52.75], [-11.18, 52.82], [-11.53, 52.97], [-11.75, 53.5]]]]}, "2016-11-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-11.03, 53.03], [-10.5, 53.25], [-10.25, 53.15], [-10.0, 53.25], [-9.47, 53.03], [-9.25, 52.5], [-9.35, 52.25], [-9.25, 52.0], [-9.47, 51.47], [-10.0, 51.25], [-10.25, 51.35], [-10.5, 51.25], [-11.03, 51.47], [-11.25, 52.0], [-11.15, 52.25], [-11.25, 52.5], [-11.03, 53.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.658460793163783}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.8334989150527}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [2.40123864327046, 3.147129214838685, 2.1198954399706054, 4.19755667596246, 6.054057659050045]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [0.7655687151672623, -1.2248320210431416, -1.4610256456141428, 0.8498779592002279, 3.2782396699057585]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.6410743936614685, -4.708720179603189, -5.753647066720849, -4.2839496981267695, -2.790288258528747]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.646351870031424, -7.271150304589526, -7.658460793163783, -6.282244871024318, -3.87190273261416]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6471224716265667, -1.8975088676975314, -2.3607182690161417, -1.9458348964271952, -1.2794798517260109]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.839176588579107, -2.700266437308085, -2.937932194780828, -2.2973442146547813, -1.3660380405383585]}}