{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:23:19.948479", "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": "2021-Apr-04_to_2021-Apr-07_48.5_17.5"}, "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": 2021040000224}, "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": "April 04 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 07 2021"}, "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": 58775.54324848263}, "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", "Yemen"]}, "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": 17.5}, "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": 48.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "48.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 48.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 51.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 17.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 19.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[47.354, 17.75], [47.25, 18.0], [47.47, 18.53], [48.0, 18.75], [48.25, 18.646], [48.5, 18.75], [48.75, 18.646], [48.823, 18.677], [48.97, 19.03], [49.323, 19.177], [49.47, 19.53], [50.0, 19.75], [50.25, 19.646], [50.5, 19.75], [50.75, 19.646], [51.0, 19.75], [51.25, 19.646], [51.5, 19.75], [52.03, 19.53], [52.25, 19.0], [52.03, 18.47], [51.5, 18.25], [51.25, 18.354], [51.177, 18.323], [51.146, 18.25], [51.25, 18.0], [51.03, 17.47], [50.677, 17.323], [50.53, 16.97], [50.177, 16.823], [50.03, 16.47], [49.5, 16.25], [48.97, 16.47], [48.823, 16.823], [48.75, 16.854], [48.726, 16.844], [48.677, 16.823], [48.53, 16.47], [48.0, 16.25], [47.47, 16.47], [47.25, 17.0], [47.354, 17.25], [47.25, 17.5], [47.354, 17.75]]]}}, "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": {"2021-04-04T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[48.25, 16.853553390593273], [48.0, 16.75], [47.46966991411009, 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anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.0320757803824563, -3.748674247865293, -4.215241508413081, -3.1354058383459718]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.0922017314614436, -4.389637747585368, -4.74611677294439, -3.5747689608701876]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3262496309383827, -1.6900144688549599, -1.9019075556075258, -1.422441528220214]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.347213601549638, -1.9103355094849241, -2.134976071691422, -1.6629731965981747]}}