{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:09.758132", "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": "2012-Apr-13_to_2012-Apr-17_357.0_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": 2012040000804}, "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 13 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 17 2012"}, "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": 65321.03812643451}, "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"]}, "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": ["Alboran Sea"]}, "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": 357.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "357.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 355.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 358.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 36.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 40.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-04-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-3.53, 38.53], [-3.0, 38.75], [-2.47, 38.53], [-2.32, 38.18], [-1.97, 38.03], [-1.75, 37.5], [-1.97, 36.97], [-2.5, 36.75], [-2.75, 36.85], [-3.0, 36.75], [-3.53, 36.97], [-3.75, 37.5], [-3.65, 37.75], [-3.75, 38.0], [-3.53, 38.53]]]]}, "2012-04-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.75, 37.5], [-4.53, 38.03], [-4.18, 38.18], [-4.03, 38.53], [-3.68, 38.68], [-3.65, 38.75], [-3.75, 39.0], [-3.65, 39.25], [-3.75, 39.5], [-3.65, 39.75], [-3.75, 40.0], [-3.53, 40.53], [-3.0, 40.75], [-2.75, 40.65], [-2.5, 40.75], [-2.25, 40.65], [-2.0, 40.75], [-1.75, 40.65], [-1.5, 40.75], [-0.97, 40.53], [-0.75, 40.0], [-0.85, 39.75], [-0.75, 39.5], [-0.85, 39.25], [-0.75, 39.0], [-0.85, 38.75], [-0.75, 38.5], [-0.97, 37.97], [-1.5, 37.75], [-1.75, 37.85], [-1.82, 37.82], [-1.85, 37.75], [-1.75, 37.5], [-1.97, 36.97], [-2.32, 36.82], [-2.35, 36.75], [-2.25, 36.5], [-2.47, 35.97], [-3.0, 35.75], [-3.25, 35.85], [-3.5, 35.75], [-4.03, 35.97], [-4.25, 36.5], [-4.15, 36.75], [-4.18, 36.82], [-4.53, 36.97], [-4.75, 37.5]]]]}, "2012-04-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.75, 37.5], [-4.53, 38.03], [-4.18, 38.18], [-4.03, 38.53], [-3.68, 38.68], [-3.65, 38.75], [-3.75, 39.0], [-3.65, 39.25], [-3.75, 39.5], [-3.65, 39.75], [-3.75, 40.0], [-3.53, 40.53], [-3.0, 40.75], [-2.75, 40.65], [-2.5, 40.75], [-2.25, 40.65], [-2.0, 40.75], [-1.75, 40.65], [-1.5, 40.75], [-0.97, 40.53], [-0.75, 40.0], [-0.85, 39.75], [-0.75, 39.5], [-0.85, 39.25], [-0.75, 39.0], [-0.85, 38.75], [-0.75, 38.5], [-0.97, 37.97], [-1.5, 37.75], [-1.75, 37.85], [-1.82, 37.82], [-1.85, 37.75], [-1.75, 37.5], [-1.97, 36.97], [-2.32, 36.82], [-2.35, 36.75], [-2.25, 36.5], [-2.47, 35.97], [-3.0, 35.75], [-3.25, 35.85], [-3.5, 35.75], [-4.03, 35.97], [-4.25, 36.5], [-4.15, 36.75], [-4.18, 36.82], [-4.53, 36.97], [-4.75, 37.5]]]]}, "2012-04-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.75, 37.5], [-4.53, 38.03], [-4.18, 38.18], [-4.03, 38.53], [-3.68, 38.68], [-3.65, 38.75], [-3.75, 39.0], [-3.65, 39.25], [-3.75, 39.5], [-3.65, 39.75], [-3.75, 40.0], [-3.53, 40.53], [-3.0, 40.75], [-2.75, 40.65], [-2.5, 40.75], [-2.25, 40.65], [-2.0, 40.75], [-1.75, 40.65], [-1.5, 40.75], [-0.97, 40.53], [-0.75, 40.0], [-0.85, 39.75], [-0.75, 39.5], [-0.85, 39.25], [-0.75, 39.0], [-0.85, 38.75], [-0.75, 38.5], [-0.97, 37.97], [-1.5, 37.75], [-1.75, 37.85], [-1.82, 37.82], [-1.85, 37.75], [-1.75, 37.5], [-1.97, 36.97], [-2.32, 36.82], [-2.35, 36.75], [-2.25, 36.5], [-2.47, 35.97], [-3.0, 35.75], [-3.25, 35.85], [-3.5, 35.75], [-4.03, 35.97], [-4.25, 36.5], [-4.15, 36.75], [-4.18, 36.82], [-4.53, 36.97], [-4.75, 37.5]]]]}, "2012-04-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-3.0, 38.75], [-2.47, 38.53], [-2.25, 38.0], [-2.47, 37.47], [-3.0, 37.25], [-3.53, 37.47], [-3.75, 38.0], [-3.53, 38.53], [-3.0, 38.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.579355905259035}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.414354155210175}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [8.078263240657805, 8.437496565395463, 7.521747120546081, 7.90451380275897, 8.76060449084099]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [7.8642181479085025, 5.169459542091147, 4.077088003464269, 4.233724820100349, 8.76060449084099]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.9576402798800245, -3.8413527859196184, -4.901979801360262, -4.577732450911511, -3.6784263220571916]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.0878072879739875, -4.776188265589383, -6.579355905259035, -6.206413526387053, -3.6784263220571916]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3154469216512046, -1.3214727973811986, -1.7668974484900797, -1.6954393309616007, -1.3493373497494503]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3417624083648008, -1.518776704471178, -2.2637958370047073, -2.2469954320464933, -1.3493373497494503]}}