{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:31.783173", "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-Apr-29_to_2019-May-01_56.0_52.5"}, "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": 2019040000773}, "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 29 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 01 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": 53429.97196207577}, "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": ["Kazakhstan", "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": 52.5}, "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": 56.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "56.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 52.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 57.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 50.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 53.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-04-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[52.25, 52.0], [52.47, 52.53], [53.0, 52.75], [53.25, 52.65], 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53.53], [55.0, 53.75], [55.25, 53.65], [55.5, 53.75], [55.75, 53.65], [56.0, 53.75], [56.5, 53.54], [57.0, 53.75], [57.53, 53.53], [57.75, 53.0], [57.53, 52.47], [57.18, 52.32], [57.15, 52.25], [57.18, 52.18], [57.53, 52.03], [57.75, 51.5], [57.53, 50.97], [57.0, 50.75], [56.75, 50.85], [56.5, 50.75], [56.07, 50.93], [56.25, 50.5], [56.03, 49.97], [55.5, 49.75], [55.25, 49.85], [55.0, 49.75], [54.47, 49.97], [54.32, 50.32], [54.25, 50.35], [54.0, 50.25], [53.75, 50.35], [53.5, 50.25], [52.97, 50.47], [52.75, 51.0], [52.85, 51.25], [52.82, 51.32], [52.47, 51.47], [52.25, 52.0]], [[55.65, 51.25], [55.68, 51.18], [55.93, 51.07], [55.82, 51.32], [55.7, 51.38], [55.65, 51.25]]]]}, "2019-05-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[52.25, 52.0], [52.47, 52.53], [53.0, 52.75], [53.25, 52.65], [53.5, 52.75], [53.75, 52.65], [53.82, 52.68], [53.97, 53.03], [54.32, 53.18], [54.47, 53.53], [55.0, 53.75], [55.25, 53.65], [55.5, 53.75], [55.75, 53.65], [56.0, 53.75], 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[1.4992174035497214, 2.8711510080302105, 5.099373827569536]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-1.1759518011002115, -0.24909757988297088, 2.5648139047123664]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-9.224393024183838, -8.260443748883935, -6.386865692156787]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-10.279795896270912, -9.10612026703592, -7.033949717701432]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9704518859087246, -1.8041263068091988, -1.4619182877345154]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1544935456355385, -2.002631732151741, -1.6211885337371443]}}