{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:18.106011", "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": "2019-Mar-02_to_2019-Mar-04_50.0_61.0"}, "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": 2019030000135}, "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 02 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 04 2019"}, "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": 107650.52440255744}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Europe"]}, "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": 61.0}, "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": 50.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "50.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 46.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 54.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 59.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 62.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-03-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.25, 60.5], [46.47, 61.03], [46.82, 61.18], [46.97, 61.53], 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59.97], [46.25, 60.5]]]]}, "2019-03-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.25, 60.5], [46.47, 61.03], [46.82, 61.18], [46.97, 61.53], [47.32, 61.68], [47.47, 62.03], [47.82, 62.18], [47.97, 62.53], [48.5, 62.75], [48.75, 62.65], [48.82, 62.68], [48.97, 63.03], [49.5, 63.25], [50.03, 63.03], [50.18, 62.68], [50.25, 62.65], [50.32, 62.68], [50.47, 63.03], [51.0, 63.25], [51.25, 63.15], [51.5, 63.25], [51.75, 63.15], [52.0, 63.25], [52.25, 63.15], [52.5, 63.25], [52.75, 63.15], [53.0, 63.25], [53.53, 63.03], [53.68, 62.68], [53.75, 62.65], [54.0, 62.75], [54.53, 62.53], [54.75, 62.0], [54.65, 61.75], [54.75, 61.5], [54.65, 61.25], [54.75, 61.0], [54.53, 60.47], [54.0, 60.25], [53.75, 60.35], [53.68, 60.32], [53.53, 59.97], [53.0, 59.75], [52.75, 59.85], [52.68, 59.82], [52.53, 59.47], [52.0, 59.25], [51.75, 59.35], [51.5, 59.25], [51.25, 59.35], [51.0, 59.25], [50.75, 59.35], [50.5, 59.25], [50.25, 59.35], [50.18, 59.32], [50.03, 58.97], [49.5, 58.75], 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"anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-9.249245291567838, -10.424484961566561, -11.546663707388284]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-11.146858249278921, -12.826536618434233, -13.585997668572276]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6267958991885332, -1.876754419942444, -2.133719975601991]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8650181944805855, -2.2735267216499686, -2.5061050749969227]}}