{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:16:41.207586", "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": "2022-Jan-05_to_2022-Jan-08_54.0_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": 2022010000318}, "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": "January 05 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 08 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 61264.04575930482}, "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", "Saudi Arabia"]}, "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": 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": 54.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "54.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 50.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 54.0}, "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": 20.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[50.25, 20.65], [50.5, 20.75], [51.03, 20.53], [51.18, 20.18], [51.25, 20.15], [51.5, 20.25], [51.75, 20.15], [52.0, 20.25], [52.25, 20.15], [52.5, 20.25], [52.8, 20.13], [52.85, 20.25], [52.75, 20.5], [52.97, 21.03], [53.5, 21.25], [53.75, 21.15], [54.0, 21.25], [54.53, 21.03], [54.75, 20.5], [54.65, 20.25], [54.75, 20.0], [54.53, 19.47], [54.18, 19.32], [54.15, 19.25], [54.25, 19.0], [54.04, 18.5], [54.25, 18.0], [54.03, 17.47], [53.68, 17.32], [53.53, 16.97], [53.0, 16.75], [52.47, 16.97], [52.25, 17.5], [52.35, 17.75], [52.32, 17.82], [51.97, 17.97], [51.75, 18.5], [51.85, 18.75], [51.82, 18.82], [51.75, 18.85], [51.5, 18.75], [51.25, 18.85], [51.0, 18.75], [50.75, 18.85], [50.5, 18.75], [50.25, 18.85], [50.0, 18.75], [49.47, 18.97], [49.25, 19.5], [49.35, 19.75], [49.25, 20.0], [49.47, 20.53], [50.0, 20.75], [50.25, 20.65]]]]}}, "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": {"2022-01-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[52.75, 20.5], [52.97, 21.03], [53.5, 21.25], [53.75, 21.15], [54.0, 21.25], [54.53, 21.03], [54.75, 20.5], [54.65, 20.25], [54.75, 20.0], [54.53, 19.47], [54.0, 19.25], [53.75, 19.35], [53.5, 19.25], [52.97, 19.47], [52.75, 20.0], [52.85, 20.25], [52.75, 20.5]]]]}, "2022-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[49.25, 20.0], [49.47, 20.53], [50.0, 20.75], [50.25, 20.65], [50.5, 20.75], [51.03, 20.53], [51.18, 20.18], [51.25, 20.15], [51.5, 20.25], [51.75, 20.15], [52.0, 20.25], [52.25, 20.15], [52.5, 20.25], [52.8, 20.13], [52.85, 20.25], [52.75, 20.5], [52.97, 21.03], [53.5, 21.25], [53.75, 21.15], [54.0, 21.25], [54.53, 21.03], [54.75, 20.5], [54.65, 20.25], [54.75, 20.0], [54.53, 19.47], [54.18, 19.32], [54.15, 19.25], [54.25, 19.0], [54.04, 18.5], [54.25, 18.0], [54.03, 17.47], [53.68, 17.32], [53.53, 16.97], [53.0, 16.75], [52.47, 16.97], [52.25, 17.5], [52.35, 17.75], 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[49.35, 19.75], [49.25, 20.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.40199179047238}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.109754273255429}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.248071744563163, 14.647070717015765, 14.566873971160305, 15.719176507368957]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.962137304038777, 13.89041277424542, 13.029848192300904, 14.379240561186293]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.0938128538506646, -4.394862886589015, -4.56238364304008, -3.4748247194852095]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.5147416269141445, -5.225490710622921, -5.40199179047238, -4.037471310197418]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2899529478474485, -1.5959616380923884, -1.6229293661363884, -1.2556426351799226]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.525606730080774, -2.2740703460490024, -1.8663702883853088, -1.333242752268596]}}