{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:20:40.657439", "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-Oct-25_to_2019-Oct-29_350.5_53.5"}, "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": 2019100000857}, "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 25 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 29 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": 59717.490537137215}, "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"]}, "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": ["Celtic Sea", "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": 53.5}, "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": 350.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "350.5\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": 51.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 54.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-10-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-10.75, 52.0], [-10.53, 52.53], [-10.18, 52.68], [-10.04, 53.0], [-10.25, 53.5], [-10.03, 54.03], [-9.5, 54.25], [-9.25, 54.15], [-9.0, 54.25], [-8.75, 54.15], [-8.68, 54.18], [-8.53, 54.53], [-8.0, 54.75], [-7.75, 54.65], [-7.5, 54.75], [-7.25, 54.65], [-7.0, 54.75], [-6.47, 54.53], [-6.32, 54.18], [-6.25, 54.15], [-6.0, 54.25], [-5.47, 54.03], [-5.25, 53.5], [-5.35, 53.25], [-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], [-8.32, 51.82], [-8.35, 51.75], [-8.25, 51.5], [-8.47, 50.97], [-9.0, 50.75], [-9.25, 50.85], [-9.5, 50.75], [-10.03, 50.97], [-10.18, 51.32], [-10.53, 51.47], [-10.75, 52.0]]]]}, "2019-10-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-10.75, 52.0], [-10.53, 52.53], [-10.18, 52.68], [-10.04, 53.0], [-10.25, 53.5], [-10.03, 54.03], [-9.5, 54.25], [-9.25, 54.15], [-9.0, 54.25], [-8.75, 54.15], [-8.68, 54.18], [-8.53, 54.53], [-8.0, 54.75], [-7.75, 54.65], [-7.5, 54.75], [-7.25, 54.65], [-7.0, 54.75], [-6.47, 54.53], [-6.32, 54.18], [-6.25, 54.15], [-6.0, 54.25], [-5.47, 54.03], [-5.25, 53.5], [-5.35, 53.25], [-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], [-7.32, 51.82], [-7.47, 51.47], [-8.0, 51.25], [-8.25, 51.35], [-8.32, 51.32], [-8.47, 50.97], [-9.0, 50.75], [-9.25, 50.85], [-9.5, 50.75], [-10.03, 50.97], [-10.18, 51.32], [-10.53, 51.47], [-10.75, 52.0]]]]}, "2019-10-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-10.75, 52.0], [-10.53, 52.53], [-10.18, 52.68], [-10.04, 53.0], [-10.25, 53.5], [-10.03, 54.03], [-9.5, 54.25], [-9.25, 54.15], [-9.0, 54.25], [-8.75, 54.15], [-8.68, 54.18], [-8.53, 54.53], [-8.0, 54.75], [-7.75, 54.65], [-7.5, 54.75], [-7.25, 54.65], [-7.0, 54.75], [-6.47, 54.53], [-6.32, 54.18], [-6.25, 54.15], [-6.0, 54.25], [-5.47, 54.03], [-5.25, 53.5], [-5.35, 53.25], [-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], [-7.32, 51.82], [-7.47, 51.47], [-8.0, 51.25], [-8.25, 51.35], [-8.32, 51.32], [-8.47, 50.97], [-9.0, 50.75], [-9.25, 50.85], [-9.5, 50.75], [-10.03, 50.97], [-10.18, 51.32], [-10.53, 51.47], [-10.75, 52.0]]]]}, "2019-10-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-10.25, 53.5], [-10.03, 54.03], [-9.5, 54.25], [-9.25, 54.15], [-9.0, 54.25], [-8.75, 54.15], [-8.68, 54.18], [-8.53, 54.53], [-8.0, 54.75], [-7.75, 54.65], [-7.5, 54.75], [-7.25, 54.65], [-7.0, 54.75], [-6.47, 54.53], [-6.32, 54.18], [-5.97, 54.03], [-5.75, 53.5], [-5.85, 53.25], [-5.75, 53.0], [-5.97, 52.47], [-6.32, 52.32], [-6.47, 51.97], [-7.0, 51.75], [-7.25, 51.85], [-7.32, 51.82], [-7.47, 51.47], [-8.0, 51.25], [-8.25, 51.35], [-8.5, 51.25], [-8.75, 51.35], [-9.0, 51.25], [-9.25, 51.35], [-9.5, 51.25], [-9.75, 51.35], [-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]]]]}, "2019-10-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.5, 54.25], [-8.97, 54.03], [-8.75, 53.5], [-8.97, 52.97], [-9.5, 52.75], [-10.03, 52.97], [-10.25, 53.5], [-10.03, 54.03], [-9.5, 54.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.966146902800631}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.519575507856108}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [5.34484646079062, 5.404961985715033, 4.969552113539237, 4.381912589865124, 5.037671618301431]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.9727466093567614, 4.214288259430248, 3.229604457514313, 3.1661700278613694, 5.037671618301431]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.28379822985036, -4.217982610223801, -4.643153581131989, -5.007492607868124, -4.115606527109776]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.3537341756033925, -5.011988088194926, -5.966146902800631, -5.751820148170793, -4.115606527109776]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7100848577889407, -1.6958371734578135, -1.8057331162741148, -1.9104456152174765, -1.5959013035381708]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0334568602017953, -2.014141430514935, -2.2910065998942826, -2.2581625697809327, -1.5959013035381708]}}