{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:04:55.825705", "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-Mar-30_to_2016-Apr-01_346.5_38.0"}, "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": 2016030000735}, "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": "March 30 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 01 2016"}, "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": 81259.63174712661}, "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": ["Spain"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean", "N.Atlantic-Ocean"]}, "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": 38.0}, "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": 346.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "346.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 343.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 351.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 35.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 43.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-03-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-15.68, 37.18], [-15.65, 37.25], [-15.75, 37.5], [-15.53, 38.03], [-15.0, 38.25], [-14.75, 38.15], [-14.68, 38.18], [-14.65, 38.25], [-14.75, 38.5], [-14.53, 39.03], [-14.18, 39.18], [-14.03, 39.53], [-13.5, 39.75], [-13.25, 39.65], [-13.18, 39.68], [-13.03, 40.03], [-12.68, 40.18], [-12.53, 40.53], [-12.18, 40.68], [-12.03, 41.03], [-11.68, 41.18], [-11.53, 41.53], [-11.18, 41.68], [-11.03, 42.03], [-10.5, 42.25], [-10.25, 42.15], [-10.18, 42.18], [-10.15, 42.25], [-10.25, 42.5], [-10.03, 43.03], [-9.68, 43.18], [-9.53, 43.53], [-9.0, 43.75], [-8.47, 43.53], [-8.25, 43.0], [-8.35, 42.75], [-8.25, 42.5], [-8.47, 41.97], [-8.82, 41.82], [-8.97, 41.47], [-9.32, 41.32], [-9.47, 40.97], [-9.82, 40.82], [-9.85, 40.75], [-9.75, 40.5], [-9.97, 39.97], [-10.32, 39.82], [-10.47, 39.47], [-11.0, 39.25], [-11.25, 39.35], [-11.32, 39.32], [-11.47, 38.97], [-11.82, 38.82], [-11.85, 38.75], [-11.75, 38.5], [-11.97, 37.97], [-12.32, 37.82], [-12.47, 37.47], [-12.82, 37.32], [-12.97, 36.97], [-13.5, 36.75], [-13.75, 36.85], [-13.82, 36.82], [-13.97, 36.47], [-14.5, 36.25], [-14.75, 36.35], [-14.82, 36.32], [-14.97, 35.97], [-15.32, 35.82], [-15.47, 35.47], [-16.0, 35.25], [-16.53, 35.47], [-16.75, 36.0], [-16.53, 36.53], [-16.18, 36.68], [-16.03, 37.03], [-15.68, 37.18]]]]}, "2016-03-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-15.68, 37.18], [-15.65, 37.25], [-15.75, 37.5], [-15.53, 38.03], [-15.0, 38.25], [-14.75, 38.15], [-14.68, 38.18], [-14.65, 38.25], [-14.75, 38.5], [-14.53, 39.03], [-14.18, 39.18], [-14.03, 39.53], [-13.5, 39.75], [-13.25, 39.65], [-13.18, 39.68], [-13.03, 40.03], [-12.68, 40.18], [-12.53, 40.53], [-12.18, 40.68], [-12.03, 41.03], [-11.68, 41.18], [-11.53, 41.53], [-11.18, 41.68], [-11.03, 42.03], [-10.5, 42.25], [-10.25, 42.15], [-10.18, 42.18], [-10.15, 42.25], [-10.25, 42.5], [-10.03, 43.03], [-9.68, 43.18], [-9.53, 43.53], [-9.0, 43.75], [-8.47, 43.53], [-8.25, 43.0], [-8.35, 42.75], [-8.25, 42.5], [-8.47, 41.97], [-8.82, 41.82], [-8.97, 41.47], [-9.32, 41.32], [-9.47, 40.97], [-9.82, 40.82], [-9.85, 40.75], [-9.75, 40.5], [-9.97, 39.97], [-10.32, 39.82], [-10.47, 39.47], [-11.0, 39.25], [-11.25, 39.35], [-11.32, 39.32], [-11.47, 38.97], [-11.82, 38.82], [-11.85, 38.75], [-11.75, 38.5], [-11.97, 37.97], [-12.32, 37.82], [-12.47, 37.47], [-12.82, 37.32], [-12.97, 36.97], [-13.5, 36.75], [-13.75, 36.85], [-13.82, 36.82], [-13.97, 36.47], [-14.5, 36.25], [-14.75, 36.35], [-14.82, 36.32], [-14.97, 35.97], [-15.32, 35.82], [-15.47, 35.47], [-16.0, 35.25], [-16.53, 35.47], [-16.75, 36.0], [-16.53, 36.53], [-16.18, 36.68], [-16.03, 37.03], [-15.68, 37.18]]]]}, "2016-04-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-15.68, 37.18], [-15.65, 37.25], [-15.75, 37.5], [-15.53, 38.03], [-15.0, 38.25], [-14.75, 38.15], [-14.68, 38.18], [-14.65, 38.25], [-14.75, 38.5], [-14.53, 39.03], [-14.18, 39.18], [-14.03, 39.53], [-13.5, 39.75], [-13.25, 39.65], [-13.18, 39.68], [-13.03, 40.03], [-12.68, 40.18], [-12.53, 40.53], [-12.18, 40.68], [-12.03, 41.03], [-11.68, 41.18], [-11.53, 41.53], [-11.18, 41.68], [-11.03, 42.03], [-10.5, 42.25], [-10.25, 42.15], [-10.18, 42.18], [-10.15, 42.25], [-10.25, 42.5], [-10.03, 43.03], [-9.68, 43.18], [-9.53, 43.53], [-9.0, 43.75], [-8.47, 43.53], [-8.25, 43.0], [-8.35, 42.75], [-8.25, 42.5], [-8.47, 41.97], [-8.82, 41.82], [-8.97, 41.47], [-9.32, 41.32], [-9.47, 40.97], [-9.82, 40.82], [-9.85, 40.75], [-9.75, 40.5], [-9.97, 39.97], [-10.32, 39.82], [-10.47, 39.47], [-11.0, 39.25], [-11.25, 39.35], [-11.32, 39.32], [-11.47, 38.97], [-11.82, 38.82], [-11.85, 38.75], [-11.75, 38.5], [-11.97, 37.97], [-12.32, 37.82], [-12.47, 37.47], [-12.82, 37.32], [-12.97, 36.97], [-13.5, 36.75], [-13.75, 36.85], [-13.82, 36.82], [-13.97, 36.47], [-14.5, 36.25], [-14.75, 36.35], [-14.82, 36.32], [-14.97, 35.97], [-15.32, 35.82], [-15.47, 35.47], [-16.0, 35.25], [-16.53, 35.47], [-16.75, 36.0], [-16.53, 36.53], [-16.18, 36.68], [-16.03, 37.03], [-15.68, 37.18]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.5950955775799116}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9419289638387713}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.27072634541048, 11.862476233668644, 12.29875320843172]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [8.092073980949237, 8.871330597775398, 8.964434408521527]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.8159162767278072, -2.2256862780748428, -1.7841843367136638]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.5950955775799116, -2.790488389553218, -3.0771529405620868]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.584842937815812, -1.9996928995555507, -1.5378605971512351]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.870103742683635, -2.294281810182634, -1.9826276878513227]}}