{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:44.135676", "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": "2011-Jun-27_to_2011-Jun-29_23.0_30.0"}, "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": 2011060001408}, "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": "June 27 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 29 2011"}, "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": 66526.67397551922}, "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": ["Egypt", "Libya"]}, "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": ["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": 30.0}, "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": 23.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "23.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 22.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 26.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 29.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 31.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-06-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.47, 31.03], [22.82, 31.18], [22.97, 31.53], [23.32, 31.68], [23.47, 32.03], [24.0, 32.25], [24.25, 32.15], [24.5, 32.25], [24.75, 32.15], [25.0, 32.25], [25.53, 32.03], [25.68, 31.68], [26.0, 31.54], [26.5, 31.75], [27.03, 31.53], [27.25, 31.0], [27.15, 30.75], [27.25, 30.5], [27.15, 30.25], [27.25, 30.0], [27.03, 29.47], [26.5, 29.25], [26.25, 29.35], [26.0, 29.25], [25.75, 29.35], [25.5, 29.25], [25.25, 29.35], [25.0, 29.25], [24.75, 29.35], [24.5, 29.25], [24.25, 29.35], [24.0, 29.25], [23.75, 29.35], [23.5, 29.25], [23.25, 29.35], [23.0, 29.25], [22.47, 29.47], [22.25, 30.0], [22.35, 30.25], [22.25, 30.5], [22.47, 31.03]]]]}, "2011-06-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.47, 31.03], [22.82, 31.18], [22.97, 31.53], [23.32, 31.68], [23.47, 32.03], [24.0, 32.25], [24.25, 32.15], [24.5, 32.25], [24.75, 32.15], [25.0, 32.25], [25.53, 32.03], [25.68, 31.68], [26.0, 31.54], [26.5, 31.75], [27.03, 31.53], [27.25, 31.0], [27.15, 30.75], [27.25, 30.5], [27.15, 30.25], [27.25, 30.0], [27.03, 29.47], [26.5, 29.25], [26.25, 29.35], [26.0, 29.25], [25.75, 29.35], [25.5, 29.25], [25.25, 29.35], [25.0, 29.25], [24.75, 29.35], [24.5, 29.25], [24.25, 29.35], [24.0, 29.25], [23.75, 29.35], [23.5, 29.25], [23.25, 29.35], [23.0, 29.25], [22.47, 29.47], [22.25, 30.0], [22.35, 30.25], [22.25, 30.5], [22.47, 31.03]]]]}, "2011-06-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.47, 31.03], [22.82, 31.18], [22.97, 31.53], [23.32, 31.68], [23.47, 32.03], [24.0, 32.25], [24.25, 32.15], [24.5, 32.25], [24.75, 32.15], [25.0, 32.25], [25.53, 32.03], [25.68, 31.68], [26.0, 31.54], [26.5, 31.75], [27.03, 31.53], [27.25, 31.0], [27.15, 30.75], [27.25, 30.5], [27.15, 30.25], [27.25, 30.0], [27.03, 29.47], [26.5, 29.25], [26.25, 29.35], [26.0, 29.25], [25.75, 29.35], [25.5, 29.25], [25.25, 29.35], [25.0, 29.25], [24.75, 29.35], [24.5, 29.25], [24.25, 29.35], [24.0, 29.25], [23.75, 29.35], [23.5, 29.25], [23.25, 29.35], [23.0, 29.25], [22.47, 29.47], [22.25, 30.0], [22.35, 30.25], [22.25, 30.5], [22.47, 31.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.553823569947042}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.0326352540832135}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.15689263864607, 24.189320881905417, 25.072320925627366]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.336768335445242, 22.37003363440897, 22.749617389149364]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.62958986185924, -3.678191062757619, -2.790124837632782]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.1900035170127126, -4.553823569947042, -3.1923989431085147]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2948118863023204, -1.801046769948354, -1.3640990883222284]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4445053785723339, -2.0481702981041816, -1.6404622539293796]}}