{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:01:43.605543", "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-Nov-03_to_2024-Nov-07_40.5_43.5"}, "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": 2024110000097}, "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": "November 03 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 07 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 58975.58538732755}, "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": ["Georgia", "Russian Federation"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "Europe"]}, "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": ["Black Sea"]}, "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": 43.5}, "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": 40.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "40.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 39.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 45.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 41.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 44.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[42.75, 43.65], [43.0, 43.75], [43.53, 43.53], [43.7, 43.13], [44.0, 43.25], [44.25, 43.15], [44.5, 43.25], [45.03, 43.03], [45.18, 42.68], [45.53, 42.53], [45.75, 42.0], [45.65, 41.75], [45.75, 41.5], [45.53, 40.97], [45.0, 40.75], [44.47, 40.97], [44.25, 41.5], [44.35, 41.75], [44.32, 41.82], [44.25, 41.85], [44.18, 41.82], [44.03, 41.47], [43.5, 41.25], [43.25, 41.35], [43.0, 41.25], [42.75, 41.35], [42.5, 41.25], [42.25, 41.35], [42.0, 41.25], [41.47, 41.47], [41.32, 41.82], [41.25, 41.85], [41.0, 41.75], [40.75, 41.85], [40.5, 41.75], [40.25, 41.85], [40.0, 41.75], [39.47, 41.97], [39.25, 42.5], [39.35, 42.75], [39.32, 42.82], [38.97, 42.97], [38.75, 43.5], [38.85, 43.75], [38.75, 44.0], [38.97, 44.53], [39.5, 44.75], [39.75, 44.65], [40.0, 44.75], [40.53, 44.53], [40.68, 44.18], [40.75, 44.15], [41.0, 44.25], [41.25, 44.15], [41.5, 44.25], [42.03, 44.03], [42.2, 43.63], [42.5, 43.75], [42.75, 43.65]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean", "W.C.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-11-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.97, 44.53], [39.5, 44.75], [40.03, 44.53], [40.25, 44.0], [40.03, 43.47], [39.5, 43.25], [38.97, 43.47], [38.75, 44.0], [38.97, 44.53]]]]}, "2024-11-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.0, 43.75], [43.53, 43.53], [43.7, 43.13], [44.0, 43.25], [44.25, 43.15], [44.5, 43.25], [45.03, 43.03], [45.25, 42.5], [45.03, 41.97], [44.5, 41.75], [44.25, 41.85], [44.0, 41.75], [43.47, 41.97], [43.3, 42.38], [43.0, 42.25], [42.47, 42.47], [42.25, 43.0], [42.47, 43.53], [43.0, 43.75]]], [[[38.97, 44.53], [39.5, 44.75], [39.75, 44.65], [40.0, 44.75], [40.53, 44.53], [40.68, 44.18], [40.75, 44.15], [41.0, 44.25], [41.25, 44.15], [41.5, 44.25], [42.03, 44.03], [42.25, 43.5], [42.15, 43.25], [42.25, 43.0], [42.15, 42.75], [42.25, 42.5], [42.03, 41.97], [41.5, 41.75], [41.25, 41.85], [41.0, 41.75], [40.75, 41.85], [40.5, 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anomaly recorded over entire duration", "value": -11.564828198333032}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.865573479747612}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [3.0489008585612396, 3.1310861093027142, 1.206820179865872, 1.440585415179953, 1.3314098242557861]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.0489008585612396, -9.018703206380167, -11.501851145426429, -11.721947097778298, -8.35140711466471]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.452281777048881, -4.912821901899495, -6.58094224090763, -6.304284135248205, -4.734369413455702]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.452281777048881, -6.436132283965378, -11.564828198333032, -10.08708419257033, -6.67594596680658]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4365346446682257, -1.6414235699613207, -2.206000336355015, -2.125635600387887, -1.588547768075727]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4365346446682257, -1.9100370484078444, -3.3012361724337356, -2.840657354145067, -2.2497098155821478]}}