{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:11.884842", "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-Aug-29_to_2012-Sep-01_11.5_28.5"}, "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": 2012080001271}, "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": "August 29 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 01 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 113951.56924014643}, "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": ["Libya"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean", "Sahara"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "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": 28.5}, "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": 11.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "11.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 10.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 16.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 26.75}, "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": {"2012-08-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.35, 30.25], [11.25, 30.5], [11.47, 31.03], [12.0, 31.25], 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29.03], [10.32, 29.18], [10.47, 29.53], [11.0, 29.75], [11.3, 29.63], [11.35, 29.75], [11.25, 30.0], [11.35, 30.25], [11.25, 30.5], [11.47, 31.03], [12.0, 31.25], [12.25, 31.15], [12.5, 31.25], [13.03, 31.03], [13.25, 30.5], [13.15, 30.25], [13.18, 30.18], [13.25, 30.15], [13.5, 30.25], [13.75, 30.15], [14.0, 30.25], [14.53, 30.03], [14.75, 29.5], [14.65, 29.25], [14.68, 29.18], [14.75, 29.15], [15.0, 29.25], [15.25, 29.15], [15.32, 29.18], [15.35, 29.25], [15.25, 29.5], [15.47, 30.03], [16.0, 30.25], [16.53, 30.03], [16.75, 29.5], [16.65, 29.25], [16.68, 29.18], [17.03, 29.03], [17.25, 28.5], [17.15, 28.25], [17.25, 28.0], [17.03, 27.47], [16.68, 27.32], [16.65, 27.25], [16.75, 27.0], [16.53, 26.47], [16.0, 26.25], [15.75, 26.35], [15.5, 26.25], [14.97, 26.47], [14.82, 26.82], [14.47, 26.97], [14.32, 27.32], [14.25, 27.35], [14.0, 27.25], [13.47, 27.47], [13.32, 27.82], [13.25, 27.85], [13.18, 27.82], [13.03, 27.47], [12.5, 27.25], [12.25, 27.35], [12.0, 27.25], [11.75, 27.35], [11.5, 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anomaly over entire duration", "value": -3.1220794845744524}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.97997993324128, 26.261749780748232, 26.880821985946966, 28.059555188144827]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.822342543291825, 24.81763130366977, 25.65058063342957, 27.565944340775047]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.696628193062811, -3.636243618018422, -3.051962241083809, -2.599001301243966]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.387206327468391, -4.215234739327229, -3.3861438415463, -2.7572845464223406]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4356008058353487, -1.9934447113265246, -1.6452875144191264, -1.5949246183832295]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.703490152232855, -2.305140383272882, -2.0919541965619106, -1.7215399982296646]}}