{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:54:51.293229", "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-Nov-09_to_2013-Nov-14_57.5_20.5"}, "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": 2013110000505}, "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": "November 09 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 14 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 54841.70803090342}, "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"]}, "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": 20.5}, "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": 57.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "57.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 55.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 59.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 19.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 22.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-11-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[57.97, 21.97], [57.75, 22.5], [57.97, 23.03], [58.5, 23.25], [58.75, 23.15], [59.0, 23.25], [59.53, 23.03], [59.75, 22.5], [59.53, 21.97], [59.0, 21.75], [58.75, 21.85], [58.5, 21.75], [57.97, 21.97]]]]}, "2013-11-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[57.35, 21.75], [57.25, 22.0], [57.47, 22.53], [57.82, 22.68], [57.97, 23.03], [58.5, 23.25], [58.75, 23.15], [59.0, 23.25], [59.53, 23.03], [59.75, 22.5], [59.65, 22.25], [59.75, 22.0], [59.53, 21.47], [59.18, 21.32], [59.03, 20.97], [58.68, 20.82], [58.53, 20.47], [58.0, 20.25], [57.47, 20.47], [57.25, 21.0], [57.35, 21.25], [57.25, 21.5], [57.35, 21.75]]]]}, "2013-11-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[55.25, 20.0], [55.47, 20.53], [56.0, 20.75], [56.25, 20.65], [56.32, 20.68], [56.47, 21.03], [56.82, 21.18], [56.97, 21.53], [57.32, 21.68], [57.35, 21.75], [57.25, 22.0], [57.47, 22.53], [57.82, 22.68], [57.97, 23.03], [58.5, 23.25], [58.75, 23.15], [59.0, 23.25], [59.53, 23.03], [59.75, 22.5], [59.65, 22.25], [59.75, 22.0], [59.53, 21.47], [59.18, 21.32], [59.15, 21.25], [59.25, 21.0], [59.03, 20.47], [58.5, 20.25], [58.25, 20.35], [58.18, 20.32], [58.03, 19.97], [57.68, 19.82], [57.65, 19.75], [57.75, 19.5], [57.53, 18.97], [57.0, 18.75], [56.75, 18.85], [56.5, 18.75], [55.97, 18.97], [55.82, 19.32], [55.47, 19.47], [55.25, 20.0]]]]}, "2013-11-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[55.25, 20.0], [55.47, 20.53], [56.0, 20.75], [56.25, 20.65], [56.32, 20.68], [56.47, 21.03], [56.82, 21.18], [56.97, 21.53], [57.32, 21.68], [57.35, 21.75], [57.25, 22.0], [57.47, 22.53], [58.0, 22.75], [58.25, 22.65], [58.5, 22.75], [58.75, 22.65], [59.0, 22.75], [59.53, 22.53], [59.75, 22.0], [59.53, 21.47], [59.18, 21.32], [59.15, 21.25], [59.25, 21.0], [59.15, 20.75], [59.25, 20.5], [59.03, 19.97], [58.5, 19.75], [58.25, 19.85], [58.0, 19.75], [57.75, 19.85], [57.68, 19.82], [57.65, 19.75], [57.75, 19.5], [57.53, 18.97], [57.0, 18.75], [56.75, 18.85], [56.5, 18.75], [55.97, 18.97], [55.82, 19.32], [55.47, 19.47], [55.25, 20.0]]]]}, "2013-11-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[55.25, 20.0], [55.47, 20.53], [56.0, 20.75], [56.25, 20.65], [56.32, 20.68], [56.47, 21.03], [56.82, 21.18], [56.97, 21.53], [57.5, 21.75], [58.0, 21.54], [58.5, 21.75], [59.03, 21.53], [59.25, 21.0], [59.15, 20.75], [59.25, 20.5], [59.03, 19.97], [58.5, 19.75], [58.25, 19.85], [58.0, 19.75], [57.75, 19.85], [57.68, 19.82], [57.65, 19.75], [57.75, 19.5], [57.53, 18.97], [57.0, 18.75], [56.75, 18.85], [56.5, 18.75], [55.97, 18.97], [55.82, 19.32], [55.47, 19.47], [55.25, 20.0]]]]}, "2013-11-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[56.97, 21.53], [57.5, 21.75], [58.0, 21.54], [58.5, 21.75], [59.03, 21.53], [59.25, 21.0], [59.15, 20.75], [59.25, 20.5], [59.03, 19.97], [58.5, 19.75], [58.25, 19.85], [58.0, 19.75], [57.75, 19.85], [57.5, 19.75], [56.97, 19.97], [56.75, 20.5], [56.85, 20.75], [56.75, 21.0], [56.97, 21.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.9270336795373737}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.8984889729390326}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.17733979921087, 23.644237314586064, 23.716818595243865, 23.917714955193844, 23.8759142511081, 24.336541873936426]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.276946766787034, 21.85825969034829, 22.21020917569723, 23.218710465130187, 23.06657531967079, 23.56913262252391]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.2655594488520023, -2.3300121269357987, -2.0266206403414646, -1.8072967243449345, -1.6487037090588552, -1.485157292767076]}, 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