{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:19:35.038900", "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": "2020-Apr-08_to_2020-Apr-11_351.5_54.0"}, "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": 2020040001474}, "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": "April 08 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 11 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 62529.060971381696}, "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.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": ["Irish Sea and St. George's Channel"]}, "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": 54.0}, "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": 351.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "351.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 349.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 354.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 51.75}, "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": {"2020-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-10.25, 54.0], [-10.03, 54.53], [-9.5, 54.75], [-9.25, 54.65], [-9.0, 54.75], [-8.75, 54.65], [-8.68, 54.68], [-8.53, 55.03], [-8.18, 55.18], [-8.03, 55.53], [-7.5, 55.75], [-7.25, 55.65], [-7.0, 55.75], [-6.75, 55.65], [-6.5, 55.75], [-5.97, 55.53], [-5.75, 55.0], [-5.85, 54.75], [-5.75, 54.5], [-5.97, 53.97], [-6.5, 53.75], [-6.75, 53.85], [-6.82, 53.82], [-6.97, 53.47], [-7.5, 53.25], [-7.75, 53.35], [-7.82, 53.32], [-7.97, 52.97], [-8.5, 52.75], [-8.75, 52.85], [-9.0, 52.75], [-9.53, 52.97], [-9.68, 53.32], [-10.03, 53.47], [-10.25, 54.0]]]]}, "2020-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-10.25, 53.5], [-10.15, 53.75], [-10.25, 54.0], [-10.03, 54.53], [-9.5, 54.75], [-9.25, 54.65], [-9.0, 54.75], [-8.75, 54.65], [-8.68, 54.68], [-8.53, 55.03], [-8.18, 55.18], [-8.03, 55.53], [-7.5, 55.75], [-7.25, 55.65], [-7.0, 55.75], [-6.75, 55.65], [-6.5, 55.75], [-5.97, 55.53], [-5.75, 55.0], [-5.85, 54.75], [-5.75, 54.5], [-5.97, 53.97], [-6.32, 53.82], [-6.35, 53.75], [-6.32, 53.68], [-6.25, 53.65], [-6.0, 53.75], [-5.47, 53.53], [-5.25, 53.0], [-5.47, 52.47], [-5.82, 52.32], [-5.97, 51.97], [-6.5, 51.75], [-6.75, 51.85], [-7.0, 51.75], [-7.25, 51.85], [-7.5, 51.75], [-7.75, 51.85], [-8.0, 51.75], [-8.25, 51.85], [-8.5, 51.75], [-8.75, 51.85], [-9.0, 51.75], [-9.25, 51.85], [-9.32, 51.82], [-9.47, 51.47], [-10.0, 51.25], [-10.53, 51.47], [-10.75, 52.0], [-10.53, 52.53], [-10.18, 52.68], [-10.04, 53.0], [-10.25, 53.5]]]]}, "2020-04-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-10.25, 53.5], [-10.15, 53.75], [-10.25, 54.0], [-10.03, 54.53], [-9.5, 54.75], [-9.25, 54.65], [-9.0, 54.75], [-8.75, 54.65], [-8.68, 54.68], [-8.53, 55.03], [-8.18, 55.18], [-8.03, 55.53], [-7.5, 55.75], [-7.25, 55.65], [-7.0, 55.75], [-6.75, 55.65], [-6.5, 55.75], [-5.97, 55.53], [-5.75, 55.0], [-5.85, 54.75], [-5.75, 54.5], [-5.97, 53.97], [-6.32, 53.82], [-6.35, 53.75], [-6.32, 53.68], [-6.25, 53.65], [-6.0, 53.75], [-5.47, 53.53], [-5.25, 53.0], [-5.47, 52.47], [-5.82, 52.32], [-5.97, 51.97], [-6.5, 51.75], [-6.75, 51.85], [-7.0, 51.75], [-7.25, 51.85], [-7.5, 51.75], [-7.75, 51.85], [-8.0, 51.75], [-8.25, 51.85], [-8.5, 51.75], [-8.75, 51.85], [-9.0, 51.75], [-9.25, 51.85], [-9.32, 51.82], [-9.47, 51.47], [-10.0, 51.25], [-10.53, 51.47], [-10.75, 52.0], [-10.53, 52.53], [-10.18, 52.68], [-10.04, 53.0], [-10.25, 53.5]]]]}, "2020-04-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-10.25, 53.5], [-10.03, 54.03], [-9.68, 54.18], [-9.53, 54.53], [-9.0, 54.75], [-8.75, 54.65], [-8.68, 54.68], [-8.53, 55.03], [-8.18, 55.18], [-8.03, 55.53], [-7.5, 55.75], [-7.25, 55.65], [-7.0, 55.75], [-6.75, 55.65], [-6.5, 55.75], [-5.97, 55.53], [-5.75, 55.0], [-5.85, 54.75], [-5.75, 54.5], [-5.97, 53.97], [-6.32, 53.82], [-6.35, 53.75], [-6.32, 53.68], [-6.25, 53.65], [-6.0, 53.75], [-5.47, 53.53], [-5.25, 53.0], [-5.47, 52.47], [-5.82, 52.32], [-5.97, 51.97], [-6.5, 51.75], [-6.75, 51.85], [-7.0, 51.75], [-7.25, 51.85], [-7.5, 51.75], [-7.75, 51.85], [-8.0, 51.75], [-8.25, 51.85], [-8.5, 51.75], [-8.75, 51.85], [-9.0, 51.75], [-9.25, 51.85], [-9.32, 51.82], [-9.47, 51.47], [-10.0, 51.25], [-10.53, 51.47], [-10.75, 52.0], [-10.53, 52.53], [-10.18, 52.68], [-10.04, 53.0], [-10.25, 53.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.766161797380619}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.029426628240602}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [10.612059405065509, 11.55150890906907, 12.63851470810431, 12.28987718790097]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.99860104633376, 12.69921374207064, 13.504183171053853, 13.714990279119377]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.87949610095006, 3.650792716026182, 4.674192028491784, 4.243079864265379]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.1173037896066944, 4.844233588471525, 5.766161797380619, 5.634372106198441]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2999672113511878, 1.6588970085308246, 2.1058640131562245, 1.916276172929069]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3864328546634608, 2.1567761928822398, 2.4874665052927, 2.693530922773745]}}