{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:26:02.377089", "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": "2021-Jun-18_to_2021-Jun-20_49.0_20.0"}, "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": 2021060000712}, "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 18 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 20 2021"}, "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": 52425.12074950999}, "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", "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": 20.0}, "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": 49.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "49.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 48.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 52.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 18.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 21.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-06-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.97, 21.03], [48.5, 21.25], [48.75, 21.15], [48.82, 21.18], [48.97, 21.53], [49.5, 21.75], [50.03, 21.53], [50.25, 21.0], [50.15, 20.75], [50.18, 20.68], [50.53, 20.53], [50.75, 20.0], [50.65, 19.75], [50.68, 19.68], [51.03, 19.53], [51.18, 19.18], [51.25, 19.15], [51.5, 19.25], [51.75, 19.15], [52.0, 19.25], [52.53, 19.03], [52.75, 18.5], [52.53, 17.97], [52.0, 17.75], [51.75, 17.85], [51.5, 17.75], [51.25, 17.85], [51.0, 17.75], [50.75, 17.85], [50.5, 17.75], [49.97, 17.97], [49.82, 18.32], [49.75, 18.35], [49.5, 18.25], [48.97, 18.47], [48.82, 18.82], [48.47, 18.97], [48.32, 19.32], [47.97, 19.47], [47.75, 20.0], [47.85, 20.25], [47.75, 20.5], [47.97, 21.03]]]]}, "2021-06-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.97, 21.03], [48.5, 21.25], [48.75, 21.15], [48.82, 21.18], [48.97, 21.53], [49.5, 21.75], [50.03, 21.53], [50.25, 21.0], [50.15, 20.75], [50.18, 20.68], [50.53, 20.53], [50.75, 20.0], [50.65, 19.75], [50.68, 19.68], [51.03, 19.53], [51.18, 19.18], [51.25, 19.15], [51.5, 19.25], [51.75, 19.15], [52.0, 19.25], [52.53, 19.03], [52.75, 18.5], [52.53, 17.97], [52.0, 17.75], [51.75, 17.85], [51.5, 17.75], [51.25, 17.85], [51.0, 17.75], [50.75, 17.85], [50.5, 17.75], [49.97, 17.97], [49.82, 18.32], [49.75, 18.35], [49.5, 18.25], [48.97, 18.47], [48.82, 18.82], [48.47, 18.97], [48.32, 19.32], [47.97, 19.47], [47.75, 20.0], [47.85, 20.25], [47.75, 20.5], [47.97, 21.03]]]]}, "2021-06-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.97, 21.03], [48.5, 21.25], [48.75, 21.15], [48.82, 21.18], [48.97, 21.53], [49.5, 21.75], [50.03, 21.53], [50.25, 21.0], [50.15, 20.75], [50.18, 20.68], [50.53, 20.53], [50.75, 20.0], [50.65, 19.75], [50.68, 19.68], [51.03, 19.53], [51.18, 19.18], [51.25, 19.15], [51.5, 19.25], [51.75, 19.15], [52.0, 19.25], [52.53, 19.03], [52.75, 18.5], [52.53, 17.97], [52.0, 17.75], [51.75, 17.85], [51.5, 17.75], [51.25, 17.85], [51.0, 17.75], [50.75, 17.85], [50.5, 17.75], [49.97, 17.97], [49.82, 18.32], [49.75, 18.35], [49.5, 18.25], [48.97, 18.47], [48.82, 18.82], [48.47, 18.97], [48.32, 19.32], [47.97, 19.47], [47.75, 20.0], [47.85, 20.25], [47.75, 20.5], [47.97, 21.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.0966710173947263}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.235776278693985}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [33.77301119506893, 33.27712764581008, 34.01379438709955]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [33.31290428401405, 32.829459324201025, 33.504993304577]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.1269678425802945, -2.643268455757752, -1.9370925377439094]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.59589546814874, -3.0966710173947263, -2.215909158297279]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5439774300170765, -1.926147132356618, -1.4108421217579978]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9289384772149918, -2.2590809016464446, -1.6463339943253181]}}