{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:57:17.696616", "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": "2014-Sep-15_to_2014-Sep-17_41.5_27.5"}, "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": 2014090000589}, "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 15 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 17 2014"}, "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": 76151.49500351882}, "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": ["Saudi Arabia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Arabian-Peninsula", "Mediterranean"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "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": 27.5}, "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": 41.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "41.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 36.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 41.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 26.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 30.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-09-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.47, 29.53], [37.0, 29.75], [37.25, 29.65], [37.32, 29.68], [37.47, 30.03], [37.82, 30.18], [37.85, 30.25], [37.75, 30.5], [37.97, 31.03], [38.5, 31.25], [39.03, 31.03], [39.18, 30.68], [39.53, 30.53], [39.75, 30.0], [39.65, 29.75], [39.68, 29.68], [40.03, 29.53], [40.25, 29.0], [40.13, 28.7], [40.25, 28.65], [40.5, 28.75], [40.75, 28.65], [41.0, 28.75], [41.53, 28.53], [41.68, 28.18], [42.03, 28.03], [42.25, 27.5], [42.03, 26.97], [41.68, 26.82], [41.53, 26.47], [41.18, 26.32], [41.03, 25.97], [40.5, 25.75], [40.25, 25.85], [40.0, 25.75], [39.47, 25.97], [39.25, 26.5], [39.35, 26.75], [39.25, 27.0], [39.38, 27.3], [39.25, 27.35], [39.0, 27.25], [38.75, 27.35], [38.5, 27.25], [37.97, 27.47], [37.75, 28.0], [37.85, 28.25], [37.8, 28.38], [37.68, 28.32], [37.53, 27.97], [37.0, 27.75], [36.47, 27.97], [36.25, 28.5], [36.35, 28.75], [36.25, 29.0], [36.47, 29.53]]]]}, "2014-09-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.47, 29.53], [37.0, 29.75], [37.25, 29.65], [37.32, 29.68], [37.47, 30.03], [37.82, 30.18], [37.85, 30.25], [37.75, 30.5], [37.97, 31.03], [38.5, 31.25], [39.03, 31.03], [39.18, 30.68], [39.53, 30.53], [39.75, 30.0], [39.65, 29.75], [39.68, 29.68], [40.03, 29.53], [40.25, 29.0], [40.13, 28.7], [40.25, 28.65], [40.5, 28.75], [40.75, 28.65], [41.0, 28.75], [41.53, 28.53], [41.68, 28.18], [42.03, 28.03], [42.25, 27.5], [42.03, 26.97], [41.68, 26.82], [41.53, 26.47], [41.18, 26.32], [41.03, 25.97], [40.5, 25.75], [40.25, 25.85], [40.0, 25.75], [39.47, 25.97], [39.25, 26.5], [39.35, 26.75], [39.25, 27.0], [39.38, 27.3], [39.25, 27.35], [39.0, 27.25], [38.75, 27.35], [38.5, 27.25], [37.97, 27.47], [37.75, 28.0], [37.85, 28.25], [37.8, 28.38], [37.68, 28.32], [37.53, 27.97], [37.0, 27.75], [36.47, 27.97], [36.25, 28.5], [36.35, 28.75], [36.25, 29.0], [36.47, 29.53]]]]}, "2014-09-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.47, 29.53], [37.0, 29.75], [37.25, 29.65], [37.32, 29.68], [37.47, 30.03], [37.82, 30.18], [37.85, 30.25], [37.75, 30.5], [37.97, 31.03], [38.5, 31.25], [39.03, 31.03], [39.18, 30.68], [39.53, 30.53], [39.75, 30.0], [39.65, 29.75], [39.68, 29.68], [40.03, 29.53], [40.25, 29.0], [40.13, 28.7], [40.25, 28.65], [40.5, 28.75], [40.75, 28.65], [41.0, 28.75], [41.53, 28.53], [41.68, 28.18], [42.03, 28.03], [42.25, 27.5], [42.03, 26.97], [41.68, 26.82], [41.53, 26.47], [41.18, 26.32], [41.03, 25.97], [40.5, 25.75], [40.25, 25.85], [40.0, 25.75], [39.47, 25.97], [39.25, 26.5], [39.35, 26.75], [39.25, 27.0], [39.38, 27.3], [39.25, 27.35], [39.0, 27.25], [38.75, 27.35], [38.5, 27.25], [37.97, 27.47], [37.75, 28.0], [37.85, 28.25], [37.8, 28.38], [37.68, 28.32], [37.53, 27.97], [37.0, 27.75], [36.47, 27.97], [36.25, 28.5], [36.35, 28.75], [36.25, 29.0], [36.47, 29.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.710360926759904}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.7876972645359226}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.125022416549882, 26.691983135870316, 26.872498026139283]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.167820384610707, 24.868915067800174, 25.418688699936297]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.711593944549701, -3.0013077324885944, -2.650190116569472]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.0634316715073737, -3.710360926759904, -3.3572130074798565]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5303616570696381, -1.6848664360095698, -1.4896733894909746]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7960447970914786, -2.2729642328204083, -2.0251959973455262]}}