{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:20:28.313599", "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-Sep-08_to_2019-Sep-13_357.0_37.0"}, "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": 2019090000273}, "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": "September 08 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 13 2019"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 63176.30743261309}, "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": ["Mediterranean Sea - Western Basin"]}, "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": 37.0}, "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": 355.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 360.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 36.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 39.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-09-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.53, 36.47], [-4.75, 37.0], [-4.53, 37.53], [-4.0, 37.75], [-3.75, 37.65], [-3.5, 37.75], [-3.25, 37.65], [-3.0, 37.75], [-2.47, 37.53], [-2.25, 37.0], [-2.47, 36.47], [-3.0, 36.25], [-3.25, 36.35], [-3.5, 36.25], [-3.75, 36.35], [-4.0, 36.25], [-4.53, 36.47]]]]}, "2019-09-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.53, 36.47], [-4.75, 37.0], [-4.53, 37.53], [-4.0, 37.75], [-3.75, 37.65], [-3.5, 37.75], [-3.25, 37.65], [-3.0, 37.75], [-2.47, 37.53], [-2.25, 37.0], [-2.47, 36.47], [-3.0, 36.25], [-3.25, 36.35], [-3.5, 36.25], [-3.75, 36.35], [-4.0, 36.25], [-4.53, 36.47]]]]}, "2019-09-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.53, 38.03], [-4.12, 38.2], [-4.25, 38.5], [-4.15, 38.75], [-4.25, 39.0], [-4.03, 39.53], [-3.5, 39.75], [-3.25, 39.65], [-3.0, 39.75], [-2.75, 39.65], [-2.5, 39.75], [-1.97, 39.53], [-1.82, 39.18], [-1.47, 39.03], [-1.25, 38.5], [-1.47, 37.97], [-1.82, 37.82], [-1.97, 37.47], [-2.32, 37.32], [-2.35, 37.25], [-2.25, 37.0], [-2.47, 36.47], [-3.0, 36.25], [-3.25, 36.35], [-3.5, 36.25], [-3.75, 36.35], [-4.0, 36.25], [-4.53, 36.47], [-4.75, 37.0], [-4.65, 37.25], [-4.75, 37.5], [-4.53, 38.03]]]]}, "2019-09-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.12, 38.2], [-4.25, 38.5], [-4.15, 38.75], [-4.25, 39.0], [-4.03, 39.53], [-3.5, 39.75], [-3.25, 39.65], [-3.0, 39.75], [-2.75, 39.65], [-2.5, 39.75], [-2.25, 39.65], [-2.0, 39.75], [-1.75, 39.65], [-1.5, 39.75], [-1.25, 39.65], [-1.0, 39.75], [-0.75, 39.65], [-0.5, 39.75], [0.03, 39.53], [0.18, 39.18], [0.53, 39.03], [0.75, 38.5], [0.53, 37.97], [0.0, 37.75], [-0.5, 37.96], [-0.82, 37.82], [-0.97, 37.47], [-1.5, 37.25], [-1.75, 37.35], [-1.82, 37.32], [-1.97, 36.97], [-2.32, 36.82], [-2.47, 36.47], [-3.0, 36.25], [-3.25, 36.35], [-3.5, 36.25], [-3.75, 36.35], [-4.0, 36.25], [-4.25, 36.35], [-4.5, 36.25], [-5.03, 36.47], [-5.25, 37.0], [-5.03, 37.53], [-4.68, 37.68], [-4.53, 38.03], [-4.12, 38.2]]]]}, "2019-09-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.12, 38.2], [-4.25, 38.5], [-4.15, 38.75], [-4.25, 39.0], [-4.03, 39.53], [-3.5, 39.75], [-3.25, 39.65], [-3.0, 39.75], [-2.75, 39.65], [-2.5, 39.75], [-2.25, 39.65], [-2.0, 39.75], [-1.75, 39.65], [-1.5, 39.75], [-1.25, 39.65], [-1.0, 39.75], [-0.75, 39.65], [-0.5, 39.75], [0.03, 39.53], [0.18, 39.18], [0.53, 39.03], [0.75, 38.5], [0.53, 37.97], [0.0, 37.75], [-0.5, 37.96], [-0.82, 37.82], [-0.97, 37.47], [-1.5, 37.25], [-1.75, 37.35], [-1.82, 37.32], [-1.97, 36.97], [-2.32, 36.82], [-2.47, 36.47], [-3.0, 36.25], [-3.25, 36.35], [-3.5, 36.25], [-3.75, 36.35], [-4.0, 36.25], [-4.25, 36.35], [-4.5, 36.25], [-5.03, 36.47], [-5.25, 37.0], [-5.03, 37.53], [-4.68, 37.68], [-4.53, 38.03], [-4.12, 38.2]]]]}, "2019-09-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-5.03, 36.47], [-5.25, 37.0], [-5.03, 37.53], [-4.5, 37.75], [-4.25, 37.65], [-4.0, 37.75], [-3.7, 37.62], [-3.62, 37.8], [-4.03, 37.97], [-4.25, 38.5], [-4.15, 38.75], [-4.25, 39.0], [-4.03, 39.53], [-3.5, 39.75], [-3.25, 39.65], [-3.0, 39.75], [-2.75, 39.65], [-2.5, 39.75], [-2.25, 39.65], [-2.0, 39.75], [-1.75, 39.65], [-1.5, 39.75], [-1.25, 39.65], [-1.0, 39.75], [-0.75, 39.65], [-0.5, 39.75], [0.03, 39.53], [0.18, 39.18], [0.53, 39.03], [0.75, 38.5], [0.53, 37.97], [0.0, 37.75], [-0.5, 37.96], [-0.82, 37.82], [-0.97, 37.47], [-1.5, 37.25], [-1.75, 37.35], [-1.82, 37.32], [-1.97, 36.97], [-2.5, 36.75], [-2.75, 36.85], [-3.0, 36.75], [-3.3, 36.88], [-3.47, 36.47], [-4.0, 36.25], [-4.25, 36.35], [-4.5, 36.25], [-5.03, 36.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.8948044322295345}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.551568685331399}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.81697091931369, 17.842893238016018, 17.744345535830348, 15.737148704647836, 16.33987818523508, 17.319656079407878]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.06575981590572, 17.155750740294195, 15.087728737924579, 11.421985828649099, 12.967031082762503, 14.320272624037159]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.017125830930676, -2.814720917003816, -3.5641380342933076, -5.706883836169672, -4.878154264586803, -3.889469287775241]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.4222392311460794, -3.127613831998019, -4.4654839434249425, -6.8948044322295345, -6.6045016973886845, -5.078371489942754]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6446423743669456, -1.498738466602971, -1.5364612532117128, -2.638814966011944, -2.2234768150727184, -1.6966379623221148]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7870829245804376, -1.622338316020512, -1.680856016727429, -3.526215805776613, -3.159206050827858, -1.9450912449234117]}}