{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:10:18.679576", "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": "2018-Mar-04_to_2018-Mar-06_34.0_51.0"}, "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": 2018030000236}, "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 04 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 06 2018"}, "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": 79443.73945492844}, "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": ["Russian Federation", "Ukraine"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["West&Central-Europe"]}, "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": []}, "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": 51.0}, "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": 34.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "34.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 33.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 37.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 48.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 52.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-03-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.97, 52.03], [33.5, 52.25], [33.75, 52.15], [33.82, 52.18], 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52.25], [36.03, 52.03], [36.25, 51.5], [36.15, 51.25], [36.18, 51.18], [36.53, 51.03], [36.68, 50.68], [37.03, 50.53], [37.25, 50.0], [37.15, 49.75], [37.18, 49.68], [37.25, 49.65], [37.5, 49.75], [38.03, 49.53], [38.25, 49.0], [38.03, 48.47], [37.5, 48.25], [37.25, 48.35], [37.18, 48.32], [37.03, 47.97], [36.5, 47.75], [36.25, 47.85], [36.0, 47.75], [35.75, 47.85], [35.5, 47.75], [35.25, 47.85], [35.0, 47.75], [34.47, 47.97], [34.32, 48.32], [33.97, 48.47], [33.82, 48.82], [33.75, 48.85], [33.5, 48.75], [32.97, 48.97], [32.75, 49.5], [32.97, 50.03], [33.32, 50.18], [33.35, 50.25], [33.32, 50.32], [32.97, 50.47], [32.75, 51.0], [32.85, 51.25], [32.75, 51.5], [32.97, 52.03]]]]}, "2018-03-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.97, 52.03], [33.5, 52.25], [33.75, 52.15], [33.82, 52.18], [33.97, 52.53], [34.5, 52.75], [35.03, 52.53], [35.18, 52.18], [35.25, 52.15], [35.5, 52.25], [36.03, 52.03], [36.25, 51.5], [36.15, 51.25], [36.18, 51.18], [36.53, 51.03], 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[-8.22659171822852, -8.284414415957713, -7.520461958419048]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-9.56617164043098, -10.243219241511213, -9.417068862730673]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-8.047667617691776, -8.178004787713554, -7.468130126707446]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-9.095259164987056, -9.244520050342032, -8.068768662547257]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6180259707184697, -1.6378990577700203, -1.471312860849838]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8191312190360174, -1.7932792755825155, -1.5943184539959712]}}