{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:45.738272", "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-Feb-13_to_2011-Feb-15_55.0_19.5"}, "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": 2011020000749}, "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": "February 13 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 15 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": 93334.3061632264}, "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": ["Oman", "Saudi Arabia", "Yemen"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Arabian-Peninsula"]}, "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": 19.5}, "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": 55.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "55.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 52.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 55.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 17.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 21.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-02-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.85, 18.25], [51.75, 18.5], [51.97, 19.03], [52.5, 19.25], [51.97, 19.47], [51.75, 20.0], [51.85, 20.25], [51.75, 20.5], [51.97, 21.03], [52.32, 21.18], [52.35, 21.25], [52.25, 21.5], [52.47, 22.03], [53.0, 22.25], [53.25, 22.15], [53.5, 22.25], [54.03, 22.03], [54.2, 21.63], [54.5, 21.75], [55.03, 21.53], [55.25, 21.0], [55.04, 20.5], [55.18, 20.18], [55.53, 20.03], [55.75, 19.5], [55.53, 18.97], [55.18, 18.82], [55.15, 18.75], [55.25, 18.5], [55.15, 18.25], [55.25, 18.0], [55.15, 17.75], [55.25, 17.5], [55.03, 16.97], [54.5, 16.75], [54.25, 16.85], [54.0, 16.75], [53.75, 16.85], [53.5, 16.75], [53.25, 16.85], [53.0, 16.75], [52.75, 16.85], [52.5, 16.75], [51.97, 16.97], [51.75, 17.5], [51.85, 17.75], [51.75, 18.0], [51.85, 18.25]], [[52.75, 19.15], [52.88, 19.2], [52.8, 19.38], [52.5, 19.25], [52.75, 19.15]]]]}, "2011-02-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.85, 18.25], [51.75, 18.5], [51.97, 19.03], [52.5, 19.25], [51.97, 19.47], [51.75, 20.0], [51.85, 20.25], [51.75, 20.5], [51.97, 21.03], [52.32, 21.18], [52.35, 21.25], [52.25, 21.5], [52.47, 22.03], [53.0, 22.25], [53.25, 22.15], [53.5, 22.25], [54.03, 22.03], [54.2, 21.63], [54.5, 21.75], [55.03, 21.53], [55.25, 21.0], [55.04, 20.5], [55.18, 20.18], [55.53, 20.03], [55.75, 19.5], [55.53, 18.97], [55.18, 18.82], [55.15, 18.75], [55.25, 18.5], [55.15, 18.25], [55.25, 18.0], [55.15, 17.75], [55.25, 17.5], [55.03, 16.97], [54.5, 16.75], [54.25, 16.85], [54.0, 16.75], [53.75, 16.85], [53.5, 16.75], [53.25, 16.85], [53.0, 16.75], [52.75, 16.85], [52.5, 16.75], [51.97, 16.97], [51.75, 17.5], [51.85, 17.75], [51.75, 18.0], [51.85, 18.25]], [[52.75, 19.15], [52.88, 19.2], [52.8, 19.38], [52.5, 19.25], [52.75, 19.15]]]]}, "2011-02-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.85, 18.25], [51.75, 18.5], [51.97, 19.03], [52.5, 19.25], [51.97, 19.47], [51.75, 20.0], [51.85, 20.25], [51.75, 20.5], [51.97, 21.03], [52.32, 21.18], [52.35, 21.25], [52.25, 21.5], [52.47, 22.03], [53.0, 22.25], [53.25, 22.15], [53.5, 22.25], [54.03, 22.03], [54.2, 21.63], [54.5, 21.75], [55.03, 21.53], [55.25, 21.0], [55.04, 20.5], [55.18, 20.18], [55.53, 20.03], [55.75, 19.5], [55.53, 18.97], [55.18, 18.82], [55.15, 18.75], [55.25, 18.5], [55.15, 18.25], [55.25, 18.0], [55.15, 17.75], [55.25, 17.5], [55.03, 16.97], [54.5, 16.75], [54.25, 16.85], [54.0, 16.75], [53.75, 16.85], [53.5, 16.75], [53.25, 16.85], [53.0, 16.75], [52.75, 16.85], [52.5, 16.75], [51.97, 16.97], [51.75, 17.5], [51.85, 17.75], [51.75, 18.0], [51.85, 18.25]], [[52.75, 19.15], [52.88, 19.2], [52.8, 19.38], [52.5, 19.25], [52.75, 19.15]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.943108482785647}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.250810622674396}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.058581284500576, 15.955519457861442, 17.119982851066595]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.417186308062185, 14.335629383968694, 16.142871911709904]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.7619633320379773, -5.0155765786938495, -3.974891957291362]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.770900908360829, -5.943108482785647, -4.409826462030708]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5110705015698236, -2.025813252171786, -1.643539748148392]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7850926773086273, -2.265031249356694, -1.976385862069496]}}