{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:00:23.449807", "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": "2024-Aug-01_to_2024-Aug-19_41.0_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": 2024080000075}, "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": "August 01 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 19 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 19}, "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": 121461.31544730379}, "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"]}, "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": 41.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "41.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 40.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 42.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 17.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 23.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[43.03, 18.53], [43.25, 18.0], [43.15, 17.75], [43.25, 17.5], [43.03, 16.97], [42.5, 16.75], [41.97, 16.97], [41.82, 17.32], [41.75, 17.35], [41.5, 17.25], [40.97, 17.47], [40.75, 18.0], [40.85, 18.25], [40.75, 18.5], [40.85, 18.75], [40.82, 18.82], [40.47, 18.97], [40.25, 19.5], [40.35, 19.75], [40.32, 19.82], [40.25, 19.85], [40.0, 19.75], [39.47, 19.97], [39.25, 20.5], [39.35, 20.75], [39.25, 21.0], [39.35, 21.25], [39.25, 21.5], [39.35, 21.75], [39.25, 22.0], [39.35, 22.25], [39.25, 22.5], [39.35, 22.75], [39.25, 23.0], [39.47, 23.53], [40.0, 23.75], [40.25, 23.65], [40.5, 23.75], [41.03, 23.53], [41.18, 23.18], [41.53, 23.03], [41.68, 22.68], [41.75, 22.65], [42.0, 22.75], [42.53, 22.53], [42.68, 22.18], [43.03, 22.03], [43.25, 21.5], [43.15, 21.25], [43.25, 21.0], [43.15, 20.75], [43.25, 20.5], [43.03, 19.97], [42.68, 19.82], [42.65, 19.75], [42.75, 19.5], [42.65, 19.25], [42.75, 19.0], [42.65, 18.75], [42.68, 18.68], [43.03, 18.53]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Arabian-Peninsula"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-08-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.97, 22.03], [40.5, 22.25], [41.03, 22.03], [41.25, 21.5], [41.15, 21.25], [41.25, 21.0], [41.03, 20.47], [40.5, 20.25], [40.25, 20.35], [40.0, 20.25], [39.47, 20.47], [39.25, 21.0], [39.47, 21.53], [39.82, 21.68], [39.97, 22.03]]]]}, "2024-08-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.47, 20.47], [39.25, 21.0], [39.47, 21.53], [39.82, 21.68], [39.97, 22.03], [40.5, 22.25], [41.03, 22.03], [41.25, 21.5], [41.15, 21.25], [41.18, 21.18], [41.53, 21.03], [41.75, 20.5], [41.65, 20.25], [41.68, 20.18], [42.03, 20.03], [42.25, 19.5], [42.15, 19.25], [42.18, 19.18], [42.53, 19.03], [42.75, 18.5], [42.53, 17.97], [42.0, 17.75], [41.75, 17.85], [41.5, 17.75], [40.97, 17.97], [40.75, 18.5], [40.85, 18.75], [40.82, 18.82], [40.47, 18.97], [40.25, 19.5], [40.35, 19.75], [40.32, 19.82], [39.97, 19.97], [39.82, 20.32], [39.47, 20.47]]]]}, "2024-08-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.47, 20.47], [39.25, 21.0], [39.47, 21.53], [39.82, 21.68], [39.97, 22.03], [40.5, 22.25], [41.03, 22.03], [41.25, 21.5], [41.15, 21.25], [41.18, 21.18], [41.53, 21.03], [41.75, 20.5], [41.65, 20.25], [41.68, 20.18], [42.03, 20.03], [42.25, 19.5], [42.15, 19.25], [42.18, 19.18], [42.53, 19.03], [42.75, 18.5], [42.53, 17.97], [42.0, 17.75], [41.75, 17.85], [41.5, 17.75], [40.97, 17.97], [40.75, 18.5], [40.85, 18.75], [40.82, 18.82], [40.47, 18.97], [40.25, 19.5], [40.35, 19.75], [40.32, 19.82], [39.97, 19.97], [39.82, 20.32], [39.47, 20.47]]]]}, "2024-08-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.97, 19.97], [39.75, 20.5], [39.97, 21.03], [40.5, 21.25], [40.75, 21.15], [41.0, 21.25], [41.53, 21.03], [41.75, 20.5], [41.65, 20.25], [41.68, 20.18], [42.03, 20.03], [42.25, 19.5], [42.15, 19.25], [42.18, 19.18], [42.53, 19.03], [42.75, 18.5], [42.53, 17.97], [42.0, 17.75], [41.75, 17.85], [41.5, 17.75], [40.97, 17.97], [40.75, 18.5], [40.85, 18.75], [40.82, 18.82], [40.47, 18.97], [40.25, 19.5], [40.35, 19.75], [40.32, 19.82], [39.97, 19.97]]]]}, "2024-08-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.75, 21.5], [39.97, 22.03], [40.5, 22.25], [41.03, 22.03], [41.25, 21.5], [41.04, 21.0], [41.18, 20.68], [41.53, 20.53], [41.75, 20.0], [41.53, 19.47], [41.0, 19.25], [40.47, 19.47], [40.32, 19.82], [39.97, 19.97], [39.75, 20.5], [39.96, 21.0], [39.75, 21.5]]]]}, "2024-08-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.25, 21.0], [39.35, 21.25], [39.25, 21.5], [39.35, 21.75], [39.25, 22.0], [39.35, 22.25], [39.25, 22.5], [39.35, 22.75], [39.25, 23.0], [39.47, 23.53], [40.0, 23.75], [40.25, 23.65], [40.5, 23.75], [41.03, 23.53], [41.18, 23.18], [41.53, 23.03], [41.68, 22.68], [41.75, 22.65], [42.0, 22.75], [42.53, 22.53], [42.68, 22.18], [43.03, 22.03], [43.25, 21.5], [43.15, 21.25], [43.25, 21.0], [43.15, 20.75], [43.25, 20.5], [43.03, 19.97], [42.68, 19.82], [42.65, 19.75], [42.75, 19.5], [42.65, 19.25], [42.75, 19.0], [42.65, 18.75], [42.68, 18.68], [43.03, 18.53], [43.25, 18.0], [43.03, 17.47], [42.5, 17.25], [42.25, 17.35], [42.0, 17.25], [41.75, 17.35], [41.5, 17.25], [40.97, 17.47], [40.75, 18.0], [40.85, 18.25], [40.75, 18.5], [40.85, 18.75], [40.82, 18.82], [40.47, 18.97], [40.25, 19.5], [40.35, 19.75], [40.32, 19.82], [40.25, 19.85], [40.0, 19.75], [39.47, 19.97], [39.25, 20.5], [39.35, 20.75], [39.25, 21.0]]]]}, "2024-08-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.25, 21.0], [39.35, 21.25], [39.25, 21.5], [39.35, 21.75], [39.25, 22.0], [39.35, 22.25], [39.25, 22.5], [39.35, 22.75], [39.25, 23.0], [39.47, 23.53], [40.0, 23.75], [40.25, 23.65], [40.5, 23.75], [41.03, 23.53], [41.18, 23.18], [41.53, 23.03], [41.68, 22.68], [41.75, 22.65], [42.0, 22.75], [42.53, 22.53], [42.68, 22.18], [43.03, 22.03], [43.25, 21.5], [43.15, 21.25], [43.25, 21.0], [43.15, 20.75], [43.25, 20.5], [43.03, 19.97], [42.68, 19.82], [42.65, 19.75], [42.75, 19.5], [42.65, 19.25], [42.75, 19.0], [42.65, 18.75], [42.68, 18.68], [43.03, 18.53], [43.25, 18.0], [43.15, 17.75], [43.25, 17.5], [43.03, 16.97], [42.5, 16.75], [41.97, 16.97], [41.82, 17.32], [41.75, 17.35], [41.5, 17.25], [40.97, 17.47], [40.75, 18.0], [40.85, 18.25], [40.75, 18.5], [40.85, 18.75], [40.82, 18.82], [40.47, 18.97], [40.25, 19.5], [40.35, 19.75], [40.32, 19.82], [40.25, 19.85], [40.0, 19.75], [39.47, 19.97], [39.25, 20.5], [39.35, 20.75], [39.25, 21.0]]]]}, "2024-08-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.25, 21.0], [39.35, 21.25], [39.25, 21.5], [39.35, 21.75], [39.25, 22.0], [39.35, 22.25], [39.25, 22.5], [39.35, 22.75], [39.25, 23.0], [39.47, 23.53], [40.0, 23.75], [40.25, 23.65], [40.5, 23.75], [41.03, 23.53], [41.18, 23.18], [41.53, 23.03], [41.68, 22.68], [41.75, 22.65], [42.0, 22.75], [42.53, 22.53], [42.68, 22.18], [43.03, 22.03], [43.25, 21.5], [43.15, 21.25], [43.25, 21.0], [43.15, 20.75], [43.25, 20.5], [43.03, 19.97], [42.68, 19.82], [42.65, 19.75], [42.75, 19.5], [42.65, 19.25], [42.75, 19.0], [42.65, 18.75], [42.68, 18.68], [43.03, 18.53], [43.25, 18.0], [43.15, 17.75], [43.25, 17.5], [43.03, 16.97], [42.5, 16.75], [41.97, 16.97], [41.82, 17.32], [41.75, 17.35], [41.5, 17.25], [40.97, 17.47], [40.75, 18.0], [40.85, 18.25], [40.75, 18.5], [40.85, 18.75], [40.82, 18.82], [40.47, 18.97], [40.25, 19.5], [40.35, 19.75], [40.32, 19.82], [40.25, 19.85], [40.0, 19.75], [39.47, 19.97], [39.25, 20.5], [39.35, 20.75], [39.25, 21.0]]]]}, "2024-08-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.47, 20.97], [39.25, 21.5], [39.47, 22.03], [40.0, 22.25], [40.25, 22.15], [40.5, 22.25], [41.03, 22.03], [41.25, 21.5], [41.13, 21.2], [41.53, 21.03], [41.75, 20.5], [41.65, 20.25], [41.68, 20.18], [42.03, 20.03], [42.25, 19.5], [42.15, 19.25], [42.18, 19.18], [42.53, 19.03], [42.75, 18.5], [42.65, 18.25], [42.68, 18.18], [43.03, 18.03], [43.25, 17.5], [43.03, 16.97], [42.5, 16.75], [41.97, 16.97], [41.82, 17.32], [41.47, 17.47], [41.32, 17.82], [40.97, 17.97], [40.75, 18.5], [40.85, 18.75], [40.82, 18.82], [40.47, 18.97], [40.25, 19.5], [40.35, 19.75], [40.32, 19.82], [39.97, 19.97], [39.75, 20.5], [39.88, 20.8], [39.47, 20.97]]]]}, "2024-08-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.97, 19.97], [39.75, 20.5], [39.97, 21.03], [40.5, 21.25], [41.03, 21.03], [41.18, 20.68], [41.53, 20.53], [41.68, 20.18], [42.03, 20.03], [42.25, 19.5], [42.15, 19.25], [42.25, 19.0], [42.15, 18.75], [42.18, 18.68], [42.53, 18.53], [42.68, 18.18], [43.03, 18.03], [43.25, 17.5], [43.03, 16.97], [42.5, 16.75], [41.97, 16.97], [41.82, 17.32], [41.47, 17.47], [41.32, 17.82], [40.97, 17.97], [40.75, 18.5], [40.85, 18.75], [40.82, 18.82], [40.47, 18.97], [40.25, 19.5], [40.35, 19.75], [40.32, 19.82], [39.97, 19.97]]]]}, "2024-08-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.97, 19.97], [39.75, 20.5], [39.97, 21.03], [40.5, 21.25], [41.03, 21.03], [41.18, 20.68], [41.53, 20.53], [41.68, 20.18], [42.03, 20.03], [42.25, 19.5], [42.15, 19.25], [42.25, 19.0], [42.15, 18.75], [42.18, 18.68], [42.53, 18.53], [42.68, 18.18], [43.03, 18.03], [43.25, 17.5], [43.03, 16.97], [42.5, 16.75], [41.97, 16.97], [41.82, 17.32], [41.47, 17.47], [41.32, 17.82], [40.97, 17.97], [40.75, 18.5], [40.85, 18.75], [40.82, 18.82], [40.47, 18.97], [40.25, 19.5], [40.35, 19.75], [40.32, 19.82], [39.97, 19.97]]]]}, "2024-08-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.47, 19.47], [40.25, 20.0], [40.47, 20.53], [41.0, 20.75], [41.53, 20.53], [41.68, 20.18], [42.03, 20.03], [42.25, 19.5], [42.03, 18.97], [41.5, 18.75], [40.97, 18.97], [40.82, 19.32], [40.47, 19.47]]]]}, "2024-08-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.47, 20.53], [41.0, 20.75], [41.53, 20.53], [41.75, 20.0], [41.53, 19.47], [41.0, 19.25], [40.47, 19.47], [40.25, 20.0], [40.47, 20.53]]]]}, "2024-08-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.47, 19.47], [40.25, 20.0], [40.47, 20.53], [41.0, 20.75], [41.53, 20.53], [41.68, 20.18], [42.03, 20.03], [42.25, 19.5], [42.15, 19.25], [42.25, 19.0], [42.03, 18.47], [41.5, 18.25], [40.97, 18.47], [40.75, 19.0], [40.85, 19.25], [40.82, 19.32], [40.47, 19.47]]]]}, "2024-08-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.47, 19.47], [40.25, 20.0], [40.47, 20.53], [41.0, 20.75], [41.53, 20.53], [41.68, 20.18], [42.03, 20.03], [42.25, 19.5], [42.15, 19.25], [42.25, 19.0], [42.03, 18.47], [41.5, 18.25], [40.97, 18.47], [40.75, 19.0], [40.85, 19.25], [40.82, 19.32], [40.47, 19.47]]]]}, "2024-08-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.47, 19.47], [40.25, 20.0], [40.47, 20.53], [41.0, 20.75], [41.53, 20.53], [41.68, 20.18], [42.03, 20.03], [42.25, 19.5], [42.15, 19.25], [42.25, 19.0], [42.03, 18.47], [41.5, 18.25], [40.97, 18.47], [40.75, 19.0], [40.85, 19.25], [40.82, 19.32], [40.47, 19.47]]]]}, "2024-08-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.47, 19.47], [40.25, 20.0], [40.47, 20.53], [41.0, 20.75], [41.53, 20.53], [41.68, 20.18], [42.03, 20.03], [42.25, 19.5], [42.15, 19.25], [42.25, 19.0], [42.03, 18.47], [41.5, 18.25], [40.97, 18.47], [40.75, 19.0], [40.85, 19.25], [40.82, 19.32], [40.47, 19.47]]]]}, "2024-08-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.47, 20.53], [41.0, 20.75], [41.53, 20.53], [41.75, 20.0], [41.53, 19.47], [41.0, 19.25], [40.47, 19.47], [40.25, 20.0], [40.47, 20.53]]]]}, "2024-08-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.47, 20.53], [41.0, 20.75], [41.53, 20.53], [41.75, 20.0], [41.53, 19.47], [41.0, 19.25], [40.47, 19.47], [40.25, 20.0], [40.47, 20.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.034008197052742}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.111638948960256}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.27652466326191, 28.19822766724849, 28.930753233208975, 29.48581821593956, 30.44032530155755, 28.354939370720786, 27.99392249297796, 29.359145311244333, 30.092288907808836, 30.91537936878956, 30.866912528347143, 31.168480714249085, 32.050387144259275, 30.931623157237766, 31.283591501386923, 31.434468667914587, 31.362779153637177, 32.01166853632958, 31.95711762313306]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.965844123629665, 23.875744695165167, 24.84206396068197, 25.124615745270262, 27.415675721774903, 21.83706106994333, 22.53775814462267, 23.45007514118487, 25.842712680193415, 29.302463269734005, 29.01724664168495, 30.742967915766542, 32.050387144259275, 30.234139570261107, 30.500545538587232, 30.562620715672836, 30.492864519200282, 32.01166853632958, 31.95711762313306]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.6588894304100186, -3.725071107252864, -3.0480893972617196, -2.899931539181999, -1.9613461441100526, -3.5386163775009365, -3.9607145213756105, -2.6070295897067437, -2.4034011525480614, -2.567277345099974, -2.6244116348092987, -2.177204693445674, -1.8012054627822067, -2.670509815141694, -2.3210637355964727, -2.161938445881295, -2.249158248121072, -1.847321448009609, -1.91890205438267]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.4647455062450376, -4.4632188849985255, -3.6797268000379404, -3.4426823407201255, -2.1204355425878703, -5.047051471295163, -6.034008197052742, -4.424800100589891, -3.449545161569688, -3.5043269219673903, -3.8007416069225997, -2.222664262306182, -1.8012054627822067, -3.3058413683170897, -2.5067923323613286, -2.3923450428758315, -2.6182929952724976, -1.847321448009609, -1.91890205438267]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5703345012625072, -2.4259350633114702, -2.005599689772479, -1.984046313705874, -1.3416352290510414, -2.5189377220677933, -2.87999833430783, -1.8579773447840116, -1.8678364643739773, -2.120773295661548, -2.1295137410768445, -1.5931194972742615, -1.3791439016811364, -2.0402004948304895, -1.8314249353726317, -1.7207883761861014, -1.7881101049108636, -1.454901387479226, -1.5725491200142283]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.831953575115486, -2.954727989847677, -2.353590359561034, -2.327822075446144, -1.3953169409409198, -4.079308033194727, -5.10499828333656, -2.961565166712231, -2.4993503300069424, -2.652056525434216, -2.778025107708532, -1.692415406302081, -1.3791439016811364, -2.523661047412737, -1.9592882818730346, -1.7782629019764413, -2.069979283218923, -1.454901387479226, -1.5725491200142283]}}