{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:47.224852", "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": "2012-Nov-02_to_2012-Nov-04_49.5_23.5"}, "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": 2012110000159}, "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 02 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 04 2012"}, "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": 51284.80240238351}, "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"]}, "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": 23.5}, "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": 49.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "49.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 47.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 49.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 21.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 24.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-11-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.47, 23.03], [47.82, 23.18], [47.85, 23.25], [47.75, 23.5], [47.85, 23.75], [47.75, 24.0], [47.97, 24.53], [48.5, 24.75], [48.75, 24.65], [49.0, 24.75], [49.25, 24.65], [49.5, 24.75], [50.03, 24.53], [50.25, 24.0], [50.15, 23.75], [50.25, 23.5], [50.15, 23.25], [50.25, 23.0], [50.15, 22.75], [50.25, 22.5], [50.03, 21.97], [49.68, 21.82], [49.65, 21.75], [49.75, 21.5], [49.53, 20.97], [49.0, 20.75], [48.75, 20.85], [48.5, 20.75], [47.97, 20.97], [47.82, 21.32], [47.47, 21.47], [47.25, 22.0], [47.35, 22.25], [47.25, 22.5], [47.47, 23.03]]]]}, "2012-11-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.47, 23.03], [47.82, 23.18], [47.85, 23.25], [47.75, 23.5], [47.85, 23.75], [47.75, 24.0], [47.97, 24.53], [48.5, 24.75], [48.75, 24.65], [49.0, 24.75], [49.25, 24.65], [49.5, 24.75], [50.03, 24.53], [50.25, 24.0], [50.15, 23.75], [50.25, 23.5], [50.15, 23.25], [50.25, 23.0], [50.15, 22.75], [50.25, 22.5], [50.03, 21.97], [49.68, 21.82], [49.65, 21.75], [49.75, 21.5], [49.53, 20.97], [49.0, 20.75], [48.75, 20.85], [48.5, 20.75], [47.97, 20.97], [47.82, 21.32], [47.47, 21.47], [47.25, 22.0], [47.35, 22.25], [47.25, 22.5], [47.47, 23.03]]]]}, "2012-11-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.47, 23.03], [47.82, 23.18], [47.85, 23.25], [47.75, 23.5], [47.85, 23.75], [47.75, 24.0], [47.97, 24.53], [48.5, 24.75], [48.75, 24.65], [49.0, 24.75], [49.25, 24.65], [49.5, 24.75], [50.03, 24.53], [50.25, 24.0], [50.15, 23.75], [50.25, 23.5], [50.15, 23.25], [50.25, 23.0], [50.15, 22.75], [50.25, 22.5], [50.03, 21.97], [49.68, 21.82], [49.65, 21.75], [49.75, 21.5], [49.53, 20.97], [49.0, 20.75], [48.75, 20.85], [48.5, 20.75], [47.97, 20.97], [47.82, 21.32], [47.47, 21.47], [47.25, 22.0], [47.35, 22.25], [47.25, 22.5], [47.47, 23.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.5080060332422818}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.8928108449611507}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.767232266317365, 22.271616753171998, 22.099381807457064]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.79419702276857, 21.61177273025885, 21.154629654206985]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.762004441155145, -3.010863146483931, -2.9055649472443768]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.339496756001836, -3.5080060332422818, -3.206587562171876]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.682109701177553, -1.7680634626240552, -1.6255830588582478]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9640216850105485, -2.099676395411225, -1.8384300945747976]}}