{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:54:23.011802", "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": "2013-Sep-12_to_2013-Sep-14_55.0_17.5"}, "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": 2013090000674}, "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 12 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 14 2013"}, "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": 67093.8509983749}, "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"]}, "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": 17.5}, "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": {"2013-09-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.97, 19.53], [52.32, 19.68], [52.35, 19.75], [52.32, 19.82], [51.97, 19.97], [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], [54.25, 21.5], [54.03, 20.97], [53.68, 20.82], [53.65, 20.75], [53.68, 20.68], [54.03, 20.53], [54.18, 20.18], [54.53, 20.03], [54.75, 19.5], [54.65, 19.25], [54.68, 19.18], [55.03, 19.03], [55.18, 18.68], [55.53, 18.53], [55.75, 18.0], [55.65, 17.75], [55.75, 17.5], [55.53, 16.97], [55.0, 16.75], [54.47, 16.97], [54.25, 17.5], [54.35, 17.75], [54.32, 17.82], [54.25, 17.85], [54.18, 17.82], [54.03, 17.47], [53.5, 17.25], [53.25, 17.35], [53.0, 17.25], [52.47, 17.47], [52.32, 17.82], [51.97, 17.97], [51.75, 18.5], [51.85, 18.75], [51.75, 19.0], [51.97, 19.53]]]]}, "2013-09-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.97, 19.53], [52.32, 19.68], [52.35, 19.75], [52.32, 19.82], [51.97, 19.97], [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], [54.25, 21.5], [54.03, 20.97], [53.68, 20.82], [53.65, 20.75], [53.68, 20.68], [54.03, 20.53], [54.18, 20.18], [54.53, 20.03], [54.75, 19.5], [54.65, 19.25], [54.68, 19.18], [55.03, 19.03], [55.18, 18.68], [55.53, 18.53], [55.75, 18.0], [55.65, 17.75], [55.75, 17.5], [55.53, 16.97], [55.0, 16.75], [54.47, 16.97], [54.25, 17.5], [54.35, 17.75], [54.32, 17.82], [54.25, 17.85], [54.18, 17.82], [54.03, 17.47], [53.5, 17.25], [53.25, 17.35], [53.0, 17.25], [52.47, 17.47], [52.32, 17.82], [51.97, 17.97], [51.75, 18.5], [51.85, 18.75], [51.75, 19.0], [51.97, 19.53]]]]}, "2013-09-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.97, 19.53], [52.32, 19.68], [52.35, 19.75], [52.32, 19.82], [51.97, 19.97], [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], [54.25, 21.5], [54.03, 20.97], [53.68, 20.82], [53.65, 20.75], [53.68, 20.68], [54.03, 20.53], [54.18, 20.18], [54.53, 20.03], [54.75, 19.5], [54.65, 19.25], [54.68, 19.18], [55.03, 19.03], [55.18, 18.68], [55.53, 18.53], [55.75, 18.0], [55.65, 17.75], [55.75, 17.5], [55.53, 16.97], [55.0, 16.75], [54.47, 16.97], [54.25, 17.5], [54.35, 17.75], [54.32, 17.82], [54.25, 17.85], [54.18, 17.82], [54.03, 17.47], [53.5, 17.25], [53.25, 17.35], [53.0, 17.25], [52.47, 17.47], [52.32, 17.82], [51.97, 17.97], [51.75, 18.5], [51.85, 18.75], [51.75, 19.0], [51.97, 19.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.694143785105496}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.0705846898021663}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [30.42464327033673, 29.386209848623594, 30.8289750100717]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.06060977240361, 24.304238563295314, 25.37252311740116]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.9062792464529106, -3.898868979035819, -2.4066058439177693]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.694143785105496, -4.264312454900164, -3.151315454491453]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8709922733881659, -2.656015700780323, -1.6262972720796929]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.4109063032730087, -3.171359137800865, -1.957309548583073]}}