{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:45:54.103061", "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": "2010-Oct-27_to_2010-Oct-31_22.0_41.5"}, "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": 2010100001110}, "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 27 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 31 2010"}, "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": 60469.388821274566}, "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": ["Albania", "Bulgaria", "Greece", "North Macedonia", "Serbia"]}, "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": []}, "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": 41.5}, "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": 22.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "22.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 19.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 23.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 39.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 42.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-10-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.47, 41.47], [19.25, 42.0], [19.47, 42.53], [20.0, 42.75], [20.25, 42.65], [20.32, 42.68], [20.47, 43.03], [21.0, 43.25], [21.25, 43.15], [21.5, 43.25], [21.75, 43.15], [22.0, 43.25], [22.53, 43.03], [22.75, 42.5], [22.54, 42.0], [22.75, 41.5], [22.53, 40.97], [22.0, 40.75], [21.47, 40.97], [21.32, 41.32], [21.25, 41.35], [21.0, 41.25], [20.75, 41.35], [20.5, 41.25], [20.25, 41.35], [20.0, 41.25], [19.47, 41.47]]]]}, "2010-10-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.47, 41.47], [19.25, 42.0], [19.47, 42.53], [20.0, 42.75], [20.25, 42.65], [20.32, 42.68], [20.47, 43.03], [21.0, 43.25], [21.25, 43.15], [21.5, 43.25], [21.75, 43.15], [22.0, 43.25], [22.53, 43.03], [22.68, 42.68], [22.75, 42.65], [23.0, 42.75], [23.53, 42.53], [23.75, 42.0], [23.54, 41.5], [23.75, 41.0], [23.65, 40.75], [23.75, 40.5], [23.54, 40.0], [23.75, 39.5], [23.53, 38.97], [23.0, 38.75], [22.5, 38.96], [22.0, 38.75], [21.47, 38.97], [21.32, 39.32], [20.97, 39.47], [20.75, 40.0], [20.85, 40.25], [20.75, 40.5], [20.85, 40.75], [20.75, 41.0], [20.85, 41.25], [20.82, 41.32], [20.75, 41.35], [20.5, 41.25], [20.25, 41.35], [20.0, 41.25], [19.47, 41.47]]]]}, "2010-10-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.47, 41.47], [19.25, 42.0], [19.47, 42.53], [20.0, 42.75], [20.25, 42.65], [20.32, 42.68], [20.47, 43.03], [21.0, 43.25], [21.25, 43.15], [21.5, 43.25], [21.75, 43.15], [22.0, 43.25], [22.53, 43.03], [22.68, 42.68], [22.75, 42.65], [23.0, 42.75], [23.53, 42.53], [23.75, 42.0], [23.54, 41.5], [23.75, 41.0], [23.65, 40.75], [23.75, 40.5], [23.54, 40.0], [23.75, 39.5], [23.53, 38.97], [23.0, 38.75], [22.5, 38.96], [22.0, 38.75], [21.47, 38.97], [21.32, 39.32], [20.97, 39.47], [20.75, 40.0], [20.85, 40.25], [20.75, 40.5], [20.85, 40.75], [20.75, 41.0], [20.85, 41.25], [20.82, 41.32], [20.75, 41.35], [20.5, 41.25], [20.25, 41.35], [20.0, 41.25], [19.47, 41.47]]]]}, "2010-10-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.85, 40.75], [20.75, 41.0], [20.85, 41.25], [20.75, 41.5], [20.85, 41.75], [20.75, 42.0], [20.85, 42.25], [20.75, 42.5], [20.97, 43.03], [21.5, 43.25], [22.03, 43.03], [22.18, 42.68], [22.25, 42.65], [22.5, 42.75], [22.75, 42.65], [23.0, 42.75], [23.53, 42.53], [23.75, 42.0], [23.54, 41.5], [23.75, 41.0], [23.65, 40.75], [23.75, 40.5], [23.54, 40.0], [23.75, 39.5], [23.53, 38.97], [23.0, 38.75], [22.5, 38.96], [22.0, 38.75], [21.47, 38.97], [21.32, 39.32], [20.97, 39.47], [20.75, 40.0], [20.85, 40.25], [20.75, 40.5], [20.85, 40.75]]]]}, "2010-10-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.88, 40.8], [21.47, 40.97], [21.25, 41.5], [21.47, 42.03], [22.0, 42.25], [22.53, 42.03], [22.75, 41.5], [22.63, 41.2], [23.03, 41.03], [23.25, 40.5], [23.03, 39.97], [22.63, 39.8], [22.75, 39.5], [22.53, 38.97], [22.0, 38.75], [21.47, 38.97], [21.25, 39.5], [21.47, 40.03], [21.88, 40.2], [21.75, 40.5], [21.88, 40.8]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.588656324295073}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.732490787817527}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [3.611170290362452, 4.752881113323383, 4.377411226581046, 5.299309283244327, 7.7788612348143715]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [1.3940174605895095, 0.5874178442982156, 0.6598625736220356, 2.44308958592768, 4.725098559627725]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.629629210532016, -5.8580705861337625, -6.0110730338658716, -5.41661962756462, -4.715148731189534]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.4540625394398035, -7.577947261897691, -8.588656324295073, -7.741244718248765, -5.622376994537717]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5381054148914446, -1.7724081083477166, -1.7821991829959478, -1.5940241836329452, -1.4238835764689588]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6727092451194272, -2.1668310726229785, -2.3938370122893717, -2.064823992758037, -1.518311136318515]}}