{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:06:37.412974", "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-Nov-29_to_2016-Dec-01_16.5_39.5"}, "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": 2016110000876}, "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": "November 29 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 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": 67297.87535675478}, "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": ["Italy"]}, "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": ["Tyrrhenian 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": 39.5}, "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": 16.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "16.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 11.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 17.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 38.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 43.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-11-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.47, 43.53], [11.82, 43.68], [11.97, 44.03], [12.5, 44.25], [12.75, 44.15], [13.0, 44.25], [13.25, 44.15], [13.5, 44.25], [14.03, 44.03], [14.25, 43.5], [14.15, 43.25], [14.25, 43.0], [14.07, 42.57], [14.5, 42.75], [15.03, 42.53], [15.18, 42.18], [15.53, 42.03], [15.68, 41.68], [15.75, 41.65], [16.0, 41.75], [16.25, 41.65], [16.5, 41.75], [17.03, 41.53], [17.25, 41.0], [17.15, 40.75], [17.25, 40.5], [17.04, 40.0], [17.18, 39.68], [17.53, 39.53], [17.75, 39.0], [17.53, 38.47], [17.0, 38.25], [16.75, 38.35], [16.5, 38.25], [15.97, 38.47], [15.82, 38.82], [15.47, 38.97], [15.32, 39.32], [14.97, 39.47], [14.82, 39.82], [14.47, 39.97], [14.32, 40.32], [13.97, 40.47], [13.82, 40.82], [13.75, 40.85], [13.5, 40.75], [13.25, 40.85], [13.0, 40.75], [12.47, 40.97], [12.25, 41.5], [12.35, 41.75], [12.32, 41.82], [12.25, 41.85], [12.0, 41.75], [11.47, 41.97], [11.25, 42.5], [11.35, 42.75], [11.25, 43.0], [11.47, 43.53]], [[13.82, 42.18], [13.93, 42.43], [13.63, 42.3], [13.68, 42.18], [13.75, 42.15], [13.82, 42.18]]]]}, "2016-11-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.47, 43.53], [11.82, 43.68], [11.97, 44.03], [12.5, 44.25], [12.75, 44.15], [13.0, 44.25], [13.25, 44.15], [13.5, 44.25], [14.03, 44.03], [14.25, 43.5], [14.15, 43.25], [14.25, 43.0], [14.07, 42.57], [14.5, 42.75], [15.03, 42.53], [15.18, 42.18], [15.53, 42.03], [15.68, 41.68], [15.75, 41.65], [16.0, 41.75], [16.25, 41.65], [16.5, 41.75], [17.03, 41.53], [17.25, 41.0], [17.15, 40.75], [17.25, 40.5], [17.04, 40.0], [17.18, 39.68], [17.53, 39.53], [17.75, 39.0], [17.53, 38.47], [17.0, 38.25], [16.75, 38.35], [16.5, 38.25], [15.97, 38.47], [15.82, 38.82], [15.47, 38.97], [15.32, 39.32], [14.97, 39.47], [14.82, 39.82], [14.47, 39.97], [14.32, 40.32], [13.97, 40.47], [13.82, 40.82], [13.75, 40.85], [13.5, 40.75], [13.25, 40.85], [13.0, 40.75], [12.47, 40.97], [12.25, 41.5], [12.35, 41.75], [12.32, 41.82], [12.25, 41.85], [12.0, 41.75], [11.47, 41.97], [11.25, 42.5], [11.35, 42.75], [11.25, 43.0], [11.47, 43.53]], [[13.82, 42.18], [13.93, 42.43], [13.63, 42.3], [13.68, 42.18], [13.75, 42.15], [13.82, 42.18]]]]}, "2016-12-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.47, 43.53], [11.82, 43.68], [11.97, 44.03], [12.5, 44.25], [12.75, 44.15], [13.0, 44.25], [13.25, 44.15], [13.5, 44.25], [14.03, 44.03], [14.25, 43.5], [14.15, 43.25], [14.25, 43.0], [14.07, 42.57], [14.5, 42.75], [15.03, 42.53], [15.18, 42.18], [15.53, 42.03], [15.68, 41.68], [15.75, 41.65], [16.0, 41.75], [16.25, 41.65], [16.5, 41.75], [17.03, 41.53], [17.25, 41.0], [17.15, 40.75], [17.25, 40.5], [17.04, 40.0], [17.18, 39.68], [17.53, 39.53], [17.75, 39.0], [17.53, 38.47], [17.0, 38.25], [16.75, 38.35], [16.5, 38.25], [15.97, 38.47], [15.82, 38.82], [15.47, 38.97], [15.32, 39.32], [14.97, 39.47], [14.82, 39.82], [14.47, 39.97], [14.32, 40.32], [13.97, 40.47], [13.82, 40.82], [13.75, 40.85], [13.5, 40.75], [13.25, 40.85], [13.0, 40.75], [12.47, 40.97], [12.25, 41.5], [12.35, 41.75], [12.32, 41.82], [12.25, 41.85], [12.0, 41.75], [11.47, 41.97], [11.25, 42.5], [11.35, 42.75], [11.25, 43.0], [11.47, 43.53]], [[13.82, 42.18], [13.93, 42.43], [13.63, 42.3], [13.68, 42.18], [13.75, 42.15], [13.82, 42.18]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.193328017708836}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.139471359546872}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [4.57546777355401, 4.266706090424009, 4.886955915002318]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [1.6927787876111324, 1.104274716005591, 1.0269911452139127]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.21837230091587, -4.4393523147468334, -3.760689462977913]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.647116055978756, -6.193328017708836, -4.703700570422825]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8125548707320132, -1.9013154802734438, -1.5806473989421774]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3990423012644113, -2.6099317753962783, -1.8462135566068176]}}