{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:58:44.196176", "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-May-10_to_2024-May-12_52.5_22.5"}, "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": 2024050000315}, "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": "May 10 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 12 2024"}, "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": 65852.08314895583}, "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", "United Arab Emirates"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "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": 22.5}, "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": 52.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "52.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 51.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 53.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 21.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 23.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[50.82, 22.68], [50.85, 22.75], [50.75, 23.0], [50.97, 23.53], [51.32, 23.68], [51.47, 24.03], [52.0, 24.25], [52.25, 24.15], [52.5, 24.25], [53.03, 24.03], [53.25, 23.5], [53.15, 23.25], [53.18, 23.18], [53.53, 23.03], [53.68, 22.68], [54.03, 22.53], [54.25, 22.0], [54.15, 21.75], [54.25, 21.5], [54.03, 20.97], [53.5, 20.75], [53.25, 20.85], [53.18, 20.82], [53.03, 20.47], [52.5, 20.25], [52.25, 20.35], [52.0, 20.25], [51.47, 20.47], [51.32, 20.82], [51.25, 20.85], [51.0, 20.75], [50.47, 20.97], [50.25, 21.5], [50.35, 21.75], [50.25, 22.0], [50.47, 22.53], [50.82, 22.68]]]]}}, "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": {"2024-05-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[50.25, 22.0], [50.47, 22.53], [50.82, 22.68], [50.85, 22.75], [50.75, 23.0], [50.97, 23.53], [51.32, 23.68], [51.47, 24.03], [52.0, 24.25], [52.25, 24.15], [52.5, 24.25], [53.03, 24.03], [53.25, 23.5], [53.15, 23.25], [53.18, 23.18], [53.53, 23.03], [53.68, 22.68], [54.03, 22.53], [54.25, 22.0], [54.15, 21.75], [54.25, 21.5], [54.03, 20.97], [53.5, 20.75], [53.25, 20.85], [53.18, 20.82], [53.03, 20.47], [52.5, 20.25], [52.25, 20.35], [52.0, 20.25], [51.47, 20.47], [51.32, 20.82], [51.25, 20.85], [51.0, 20.75], [50.47, 20.97], [50.25, 21.5], [50.35, 21.75], [50.25, 22.0]]]]}, "2024-05-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[50.25, 22.0], [50.47, 22.53], [50.82, 22.68], [50.85, 22.75], [50.75, 23.0], [50.97, 23.53], [51.32, 23.68], [51.47, 24.03], [52.0, 24.25], [52.25, 24.15], [52.5, 24.25], [53.03, 24.03], [53.25, 23.5], [53.15, 23.25], [53.18, 23.18], [53.53, 23.03], [53.68, 22.68], [54.03, 22.53], [54.25, 22.0], [54.15, 21.75], [54.25, 21.5], [54.03, 20.97], [53.5, 20.75], [53.25, 20.85], [53.18, 20.82], [53.03, 20.47], [52.5, 20.25], [52.25, 20.35], [52.0, 20.25], [51.47, 20.47], [51.32, 20.82], [51.25, 20.85], [51.0, 20.75], [50.47, 20.97], [50.25, 21.5], [50.35, 21.75], [50.25, 22.0]]]]}, "2024-05-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[50.25, 22.0], [50.47, 22.53], [50.82, 22.68], [50.85, 22.75], [50.75, 23.0], [50.97, 23.53], [51.32, 23.68], [51.47, 24.03], [52.0, 24.25], [52.25, 24.15], [52.5, 24.25], [53.03, 24.03], [53.25, 23.5], [53.15, 23.25], [53.18, 23.18], [53.53, 23.03], [53.68, 22.68], [54.03, 22.53], [54.25, 22.0], [54.15, 21.75], [54.25, 21.5], [54.03, 20.97], [53.5, 20.75], [53.25, 20.85], [53.18, 20.82], [53.03, 20.47], [52.5, 20.25], [52.25, 20.35], [52.0, 20.25], [51.47, 20.47], [51.32, 20.82], [51.25, 20.85], [51.0, 20.75], [50.47, 20.97], [50.25, 21.5], [50.35, 21.75], [50.25, 22.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.884143887870096}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.8549707693018282}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [30.27506323297115, 30.37871004414842, 30.066991865405043]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.285293196700536, 27.988043881575948, 29.125713461473936]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.7452686548354293, -3.727710111706049, -4.091933541364006]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.709101595038419, -4.884143887870096, -4.724489304150268]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.746656033120764, -1.7531058717378176, -1.9447960921911427]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.062287807238356, -2.037511142983819, -2.2444688451539183]}}