{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:52.241170", "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": "2019-Jun-12_to_2019-Jun-16_353.0_52.5"}, "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": 2019060000434}, "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": "June 12 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 16 2019"}, "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": 252290.6206874696}, "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": ["Celtic Sea", "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": 52.5}, "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": 353.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "353.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 345.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 353.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 48.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 55.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-06-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-14.18, 50.68], [-14.15, 50.75], [-14.25, 51.0], [-14.15, 51.25], [-14.25, 51.5], [-14.03, 52.03], [-13.5, 52.25], [-12.97, 52.03], [-12.82, 51.68], [-12.47, 51.53], [-12.25, 51.0], [-12.35, 50.75], [-12.25, 50.5], [-12.35, 50.25], [-12.3, 50.12], [-12.0, 50.25], [-11.75, 50.15], [-11.5, 50.25], [-10.97, 50.03], [-10.82, 49.68], [-10.75, 49.65], [-10.5, 49.75], [-9.97, 49.53], [-9.75, 49.0], [-9.85, 48.75], [-9.75, 48.5], [-9.97, 47.97], [-10.5, 47.75], [-10.75, 47.85], [-11.0, 47.75], [-11.25, 47.85], [-11.5, 47.75], [-11.75, 47.85], [-12.0, 47.75], [-12.53, 47.97], [-12.68, 48.32], [-12.75, 48.35], [-13.0, 48.25], [-13.53, 48.47], [-13.68, 48.82], [-13.75, 48.85], [-14.0, 48.75], [-14.53, 48.97], [-14.75, 49.5], [-14.65, 49.75], [-14.75, 50.0], [-14.53, 50.53], [-14.18, 50.68]]], [[[-7.53, 53.53], [-7.18, 53.68], [-7.03, 54.03], [-6.5, 54.25], [-5.97, 54.03], [-5.75, 53.5], [-5.85, 53.25], [-5.75, 53.0], [-5.85, 52.75], [-5.75, 52.5], [-5.97, 51.97], [-6.5, 51.75], [-6.75, 51.85], [-6.82, 51.82], [-6.97, 51.47], [-7.5, 51.25], [-7.75, 51.35], [-8.0, 51.25], [-8.53, 51.47], [-8.75, 52.0], [-8.53, 52.53], [-8.18, 52.68], [-8.03, 53.03], [-7.68, 53.18], [-7.53, 53.53]]]]}, "2019-06-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-15.03, 52.53], [-14.5, 52.75], [-14.25, 52.65], [-14.18, 52.68], [-14.15, 52.75], [-14.25, 53.0], [-14.15, 53.25], [-14.25, 53.5], [-14.15, 53.75], [-14.25, 54.0], [-14.15, 54.25], [-14.25, 54.5], [-14.03, 55.03], [-13.68, 55.18], [-13.53, 55.53], [-13.0, 55.75], [-12.75, 55.65], [-12.5, 55.75], [-11.97, 55.53], [-11.82, 55.18], [-11.47, 55.03], [-11.25, 54.5], [-11.35, 54.25], [-11.32, 54.18], [-11.25, 54.15], [-11.18, 54.18], [-11.03, 54.53], [-10.5, 54.75], [-10.25, 54.65], [-10.18, 54.68], [-10.03, 55.03], [-9.5, 55.25], [-9.25, 55.15], [-9.0, 55.25], [-8.75, 55.15], [-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], [-6.75, 55.15], [-6.5, 55.25], [-5.97, 55.03], [-5.75, 54.5], [-5.85, 54.25], [-5.75, 54.0], [-5.85, 53.75], [-5.75, 53.5], [-5.85, 53.25], [-5.75, 53.0], [-5.85, 52.75], [-5.75, 52.5], [-5.97, 51.97], [-6.5, 51.75], [-6.75, 51.85], [-6.82, 51.82], [-6.97, 51.47], [-7.5, 51.25], [-7.75, 51.35], [-7.82, 51.32], [-7.97, 50.97], [-8.5, 50.75], [-8.75, 50.85], [-9.0, 50.75], [-9.53, 50.97], [-9.68, 51.32], [-9.75, 51.35], [-9.82, 51.32], [-9.97, 50.97], [-10.5, 50.75], [-10.75, 50.85], [-10.82, 50.82], [-10.85, 50.75], [-10.82, 50.68], [-10.47, 50.53], [-10.32, 50.18], [-9.97, 50.03], [-9.75, 49.5], [-9.85, 49.25], [-9.75, 49.0], [-9.85, 48.75], [-9.75, 48.5], [-9.97, 47.97], [-10.5, 47.75], [-10.75, 47.85], [-11.0, 47.75], [-11.25, 47.85], [-11.5, 47.75], [-11.75, 47.85], [-12.0, 47.75], [-12.53, 47.97], [-12.68, 48.32], [-12.75, 48.35], [-13.0, 48.25], [-13.53, 48.47], [-13.68, 48.82], [-13.75, 48.85], [-14.0, 48.75], [-14.53, 48.97], [-14.75, 49.5], [-14.65, 49.75], [-14.75, 50.0], [-14.65, 50.25], [-14.68, 50.32], [-15.03, 50.47], [-15.25, 51.0], [-15.04, 51.5], [-15.25, 52.0], [-15.03, 52.53]]]]}, "2019-06-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-15.03, 52.53], [-14.5, 52.75], [-14.25, 52.65], [-14.18, 52.68], [-14.15, 52.75], [-14.25, 53.0], [-14.15, 53.25], [-14.25, 53.5], [-14.15, 53.75], [-14.25, 54.0], [-14.15, 54.25], [-14.25, 54.5], [-14.03, 55.03], [-13.68, 55.18], [-13.53, 55.53], [-13.0, 55.75], [-12.75, 55.65], [-12.5, 55.75], [-11.97, 55.53], [-11.82, 55.18], [-11.47, 55.03], [-11.25, 54.5], [-11.35, 54.25], [-11.32, 54.18], [-11.25, 54.15], [-11.18, 54.18], [-11.03, 54.53], [-10.5, 54.75], [-10.25, 54.65], [-10.18, 54.68], [-10.03, 55.03], [-9.5, 55.25], [-9.25, 55.15], [-9.0, 55.25], [-8.75, 55.15], [-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], [-6.75, 55.15], [-6.5, 55.25], [-5.97, 55.03], [-5.75, 54.5], [-5.85, 54.25], [-5.75, 54.0], [-5.85, 53.75], [-5.75, 53.5], [-5.85, 53.25], [-5.75, 53.0], [-5.85, 52.75], [-5.75, 52.5], [-5.97, 51.97], [-6.5, 51.75], [-6.75, 51.85], [-6.82, 51.82], [-6.97, 51.47], [-7.5, 51.25], [-7.75, 51.35], [-7.82, 51.32], [-7.97, 50.97], [-8.5, 50.75], [-8.75, 50.85], [-9.0, 50.75], [-9.53, 50.97], [-9.68, 51.32], [-9.75, 51.35], [-9.82, 51.32], [-9.97, 50.97], [-10.5, 50.75], [-10.75, 50.85], [-10.82, 50.82], [-10.85, 50.75], [-10.82, 50.68], [-10.47, 50.53], [-10.32, 50.18], [-9.97, 50.03], [-9.75, 49.5], [-9.85, 49.25], [-9.75, 49.0], [-9.85, 48.75], [-9.75, 48.5], [-9.97, 47.97], [-10.5, 47.75], [-10.75, 47.85], [-11.0, 47.75], [-11.25, 47.85], [-11.5, 47.75], [-11.75, 47.85], [-12.0, 47.75], [-12.53, 47.97], [-12.68, 48.32], [-12.75, 48.35], [-13.0, 48.25], [-13.53, 48.47], [-13.68, 48.82], [-13.75, 48.85], [-14.0, 48.75], [-14.53, 48.97], [-14.75, 49.5], [-14.65, 49.75], [-14.75, 50.0], [-14.65, 50.25], [-14.68, 50.32], [-15.03, 50.47], [-15.25, 51.0], [-15.04, 51.5], [-15.25, 52.0], [-15.03, 52.53]]]]}, "2019-06-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-15.03, 52.53], [-14.5, 52.75], [-14.25, 52.65], [-14.18, 52.68], [-14.15, 52.75], [-14.25, 53.0], [-14.15, 53.25], [-14.25, 53.5], [-14.15, 53.75], [-14.25, 54.0], [-14.15, 54.25], [-14.25, 54.5], [-14.03, 55.03], [-13.68, 55.18], [-13.53, 55.53], [-13.0, 55.75], [-12.75, 55.65], [-12.5, 55.75], [-11.97, 55.53], [-11.82, 55.18], [-11.47, 55.03], [-11.25, 54.5], [-11.35, 54.25], [-11.32, 54.18], [-11.25, 54.15], [-11.18, 54.18], [-11.03, 54.53], [-10.5, 54.75], [-10.25, 54.65], [-10.18, 54.68], [-10.03, 55.03], [-9.5, 55.25], [-9.25, 55.15], [-9.0, 55.25], [-8.75, 55.15], [-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], [-6.75, 55.15], [-6.5, 55.25], [-5.97, 55.03], [-5.75, 54.5], [-5.85, 54.25], [-5.75, 54.0], [-5.85, 53.75], [-5.75, 53.5], [-5.85, 53.25], [-5.75, 53.0], [-5.85, 52.75], [-5.75, 52.5], [-5.97, 51.97], [-6.5, 51.75], [-6.75, 51.85], [-6.82, 51.82], [-6.97, 51.47], [-7.5, 51.25], [-7.75, 51.35], [-7.82, 51.32], [-7.97, 50.97], [-8.5, 50.75], [-8.75, 50.85], [-9.0, 50.75], [-9.53, 50.97], [-9.68, 51.32], [-9.75, 51.35], [-9.82, 51.32], [-9.97, 50.97], [-10.5, 50.75], [-10.75, 50.85], [-10.82, 50.82], [-10.85, 50.75], [-10.82, 50.68], [-10.47, 50.53], [-10.32, 50.18], [-9.97, 50.03], [-9.75, 49.5], [-9.97, 48.97], [-10.5, 48.75], [-10.75, 48.85], [-10.82, 48.82], [-10.97, 48.47], [-11.5, 48.25], [-11.75, 48.35], [-12.0, 48.25], [-12.53, 48.47], [-12.68, 48.82], [-12.75, 48.85], [-13.0, 48.75], [-13.25, 48.85], [-13.5, 48.75], [-14.03, 48.97], [-14.18, 49.32], [-14.53, 49.47], [-14.75, 50.0], [-14.65, 50.25], [-14.68, 50.32], [-15.03, 50.47], [-15.25, 51.0], [-15.04, 51.5], [-15.25, 52.0], [-15.03, 52.53]]]]}, "2019-06-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-13.53, 52.97], [-13.75, 53.5], [-13.53, 54.03], [-13.0, 54.25], [-12.47, 54.03], [-12.25, 53.5], [-12.47, 52.97], [-13.0, 52.75], [-13.53, 52.97]]], [[[-9.5, 54.75], [-9.25, 54.65], [-9.18, 54.68], [-9.03, 55.03], [-8.5, 55.25], [-7.97, 55.03], [-7.82, 54.68], [-7.47, 54.53], [-7.25, 54.0], [-7.47, 53.47], [-7.82, 53.32], [-7.85, 53.25], [-7.82, 53.18], [-7.75, 53.15], [-7.5, 53.25], [-7.25, 53.15], [-7.0, 53.25], [-6.47, 53.03], [-6.25, 52.5], [-6.47, 51.97], [-7.0, 51.75], [-7.25, 51.85], [-7.5, 51.75], [-7.75, 51.85], [-8.0, 51.75], [-8.53, 51.97], [-8.68, 52.32], [-8.75, 52.35], [-9.0, 52.25], [-9.53, 52.47], [-9.68, 52.82], [-10.03, 52.97], [-10.25, 53.5], [-10.15, 53.75], [-10.25, 54.0], [-10.03, 54.53], [-9.5, 54.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.7287730275249373}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9311315903218162}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.078469301648227, 11.259676651464531, 11.034242525161346, 11.343240458558682, 11.14711100246177]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.15354727934431, 9.404078461749862, 9.359317941784866, 9.643078047017013, 10.716666177084846]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5036321205511611, -1.829035428839505, -2.153568936386121, -1.8842167693971303, -2.1500275766180112]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.6917094124905816, -3.631469255631714, -3.7287730275249373, -3.5656411638838676, -2.4499942746390957]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3791565320379473, -1.5603964242379176, -1.9334799106793696, -1.6254097910296919, -1.2946180365437188]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7576400483585974, -1.8723301629823839, -2.446922639167423, -2.284993355199621, -1.3749283589926056]}}