{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:21.004429", "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-May-13_to_2012-May-15_19.0_44.0"}, "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": 2012050000768}, "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": "May 13 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 15 2012"}, "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": 62067.89916666465}, "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": ["Bosnia and Herzegovina", "Montenegro", "Romania", "Serbia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean", "West&Central-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": []}, "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": 44.0}, "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": 19.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "19.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 17.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 22.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 43.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 45.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-05-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.97, 43.47], [16.75, 44.0], [16.97, 44.53], [17.5, 44.75], [17.75, 44.65], [18.0, 44.75], [18.25, 44.65], [18.32, 44.68], [18.47, 45.03], [19.0, 45.25], [19.25, 45.15], [19.32, 45.18], [19.47, 45.53], [19.82, 45.68], [19.97, 46.03], [20.5, 46.25], [20.75, 46.15], [21.0, 46.25], [21.53, 46.03], [21.75, 45.5], [21.65, 45.25], [21.68, 45.18], [22.03, 45.03], [22.25, 44.5], [22.15, 44.25], [22.18, 44.18], [22.53, 44.03], [22.75, 43.5], [22.53, 42.97], [22.0, 42.75], [21.75, 42.85], [21.5, 42.75], [21.25, 42.85], [21.0, 42.75], [20.75, 42.85], [20.5, 42.75], [20.25, 42.85], [20.0, 42.75], [19.75, 42.85], [19.5, 42.75], [19.25, 42.85], [19.0, 42.75], [18.75, 42.85], [18.5, 42.75], [17.97, 42.97], [17.82, 43.32], [17.75, 43.35], [17.5, 43.25], [16.97, 43.47]]]]}, "2012-05-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.97, 43.47], [16.75, 44.0], [16.97, 44.53], [17.5, 44.75], [17.75, 44.65], [18.0, 44.75], [18.25, 44.65], [18.32, 44.68], [18.47, 45.03], [19.0, 45.25], [19.25, 45.15], [19.32, 45.18], [19.47, 45.53], [19.82, 45.68], [19.97, 46.03], [20.5, 46.25], [20.75, 46.15], [21.0, 46.25], [21.53, 46.03], [21.75, 45.5], [21.65, 45.25], [21.68, 45.18], [22.03, 45.03], [22.25, 44.5], [22.15, 44.25], [22.18, 44.18], [22.53, 44.03], [22.75, 43.5], [22.53, 42.97], [22.0, 42.75], [21.75, 42.85], [21.5, 42.75], [21.25, 42.85], [21.0, 42.75], [20.75, 42.85], [20.5, 42.75], [20.25, 42.85], [20.0, 42.75], [19.75, 42.85], [19.5, 42.75], [19.25, 42.85], [19.0, 42.75], [18.75, 42.85], [18.5, 42.75], [17.97, 42.97], [17.82, 43.32], [17.75, 43.35], [17.5, 43.25], [16.97, 43.47]]]]}, "2012-05-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.97, 43.47], [16.75, 44.0], [16.97, 44.53], [17.5, 44.75], [17.75, 44.65], [18.0, 44.75], [18.25, 44.65], [18.32, 44.68], [18.47, 45.03], [19.0, 45.25], [19.25, 45.15], [19.32, 45.18], [19.47, 45.53], [19.82, 45.68], [19.97, 46.03], [20.5, 46.25], [20.75, 46.15], [21.0, 46.25], [21.53, 46.03], [21.75, 45.5], [21.65, 45.25], [21.68, 45.18], [22.03, 45.03], [22.25, 44.5], [22.15, 44.25], [22.18, 44.18], [22.53, 44.03], [22.75, 43.5], [22.53, 42.97], [22.0, 42.75], [21.75, 42.85], [21.5, 42.75], [21.25, 42.85], [21.0, 42.75], [20.75, 42.85], [20.5, 42.75], [20.25, 42.85], [20.0, 42.75], [19.75, 42.85], [19.5, 42.75], [19.25, 42.85], [19.0, 42.75], [18.75, 42.85], [18.5, 42.75], [17.97, 42.97], [17.82, 43.32], [17.75, 43.35], [17.5, 43.25], [16.97, 43.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -11.048094383755483}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.279892560071798}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.323522037111218, 5.9651211702469595, 8.650315774256285]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [5.067407638167708, 1.2050357999638095, 4.725402953178616]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.9752886965087315, -9.313602568795641, -6.550786414911014]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.076616918146954, -11.048094383755483, -7.632751088719431]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.764937672244447, -2.628827077360197, -1.7783892337302822]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.078496514397016, -3.0989835222189765, -2.133198196726138]}}