{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:57:52.199645", "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-Mar-26_to_2024-Mar-31_50.5_20.5"}, "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": 2024030000563}, "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": "March 26 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 31 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 159907.25229900164}, "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": 20.5}, "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": 50.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "50.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 45.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 53.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 18.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 21.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[45.75, 20.15], [46.0, 20.25], [46.25, 20.15], [46.32, 20.18], [46.47, 20.53], [47.0, 20.75], [47.25, 20.65], [47.5, 20.75], 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"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": {"2024-03-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.75, 19.5], [44.97, 20.03], [45.5, 20.25], [45.75, 20.15], [46.0, 20.25], [46.25, 20.15], [46.32, 20.18], [46.47, 20.53], [47.0, 20.75], [47.25, 20.65], [47.5, 20.75], [47.75, 20.65], [47.82, 20.68], [47.97, 21.03], [48.32, 21.18], [48.47, 21.53], [49.0, 21.75], [49.25, 21.65], [49.5, 21.75], [49.75, 21.65], [50.0, 21.75], [50.25, 21.65], [50.5, 21.75], [50.75, 21.65], [51.0, 21.75], [51.25, 21.65], [51.5, 21.75], [51.75, 21.65], [52.0, 21.75], [52.25, 21.65], [52.5, 21.75], [53.03, 21.53], [53.18, 21.18], [53.53, 21.03], [53.75, 20.5], [53.53, 19.97], [53.0, 19.75], [52.75, 19.85], [52.68, 19.82], [52.53, 19.47], [52.18, 19.32], [52.03, 18.97], [51.5, 18.75], [51.0, 18.96], [50.5, 18.75], 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"description": "The daily evolution of mean t2m anomalies.", "value": [-6.224437642011237, -6.345993484162913, -5.4630117180294935, -5.176665233198244, -4.415336332746847, -4.871379855265559]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.132870911979353, -7.111268702482278, -7.007128262568585, -6.353498071200647, -4.415336332746847, -4.871379855265559]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.0812627235057723, -2.087360044951967, -1.8188856746009414, -1.694421107234466, -1.4571414394429012, -1.6703022714284848]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.791215098147859, -2.550515716891638, -2.2003127878450988, 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