{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:31.611510", "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-27_to_2019-May-01_56.5_60.0"}, "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": 2019040000714}, "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 27 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": 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": 234161.87817714646}, "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", "W.Siberia"]}, "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": 60.0}, "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": 56.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "56.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 50.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 68.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 56.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 61.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-04-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.97, 60.47], [51.75, 61.0], [51.97, 61.53], [52.5, 61.75], [52.75, 61.65], [53.0, 61.75], [53.25, 61.65], [53.5, 61.75], [53.75, 61.65], [54.0, 61.75], [54.25, 61.65], [54.5, 61.75], [55.03, 61.53], [55.18, 61.18], [55.25, 61.15], [55.5, 61.25], [56.03, 61.03], [56.18, 60.68], [56.25, 60.65], [56.5, 60.75], [57.03, 60.53], [57.25, 60.0], [57.03, 59.47], [56.5, 59.25], [56.25, 59.35], [56.0, 59.25], [55.47, 59.47], [55.32, 59.82], [55.25, 59.85], [55.0, 59.75], [54.75, 59.85], [54.5, 59.75], [54.25, 59.85], [54.0, 59.75], [53.75, 59.85], [53.5, 59.75], [52.97, 59.97], [52.82, 60.32], [52.75, 60.35], [52.5, 60.25], [51.97, 60.47]]]]}, "2019-04-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[49.75, 61.5], [49.97, 62.03], [50.5, 62.25], [51.03, 62.03], [51.18, 61.68], [51.25, 61.65], [51.32, 61.68], [51.47, 62.03], [52.0, 62.25], [52.25, 62.15], [52.5, 62.25], [52.75, 62.15], [53.0, 62.25], [53.25, 62.15], [53.5, 62.25], [53.75, 62.15], [54.0, 62.25], [54.53, 62.03], [54.68, 61.68], [55.03, 61.53], [55.18, 61.18], [55.25, 61.15], [55.5, 61.25], [56.03, 61.03], [56.18, 60.68], [56.25, 60.65], [56.5, 60.75], [57.03, 60.53], [57.25, 60.0], [57.04, 59.5], [57.25, 59.0], [57.13, 58.7], [57.5, 58.54], [58.0, 58.75], [58.25, 58.65], [58.32, 58.68], [58.35, 58.75], [58.25, 59.0], [58.47, 59.53], [59.0, 59.75], [59.25, 59.65], [59.5, 59.75], [59.75, 59.65], [60.0, 59.75], [60.25, 59.65], [60.5, 59.75], [61.03, 59.53], [61.18, 59.18], [61.25, 59.15], [61.5, 59.25], [61.75, 59.15], [62.0, 59.25], [62.25, 59.15], [62.5, 59.25], [63.0, 59.04], [63.5, 59.25], [64.03, 59.03], [64.18, 58.68], [64.53, 58.53], [64.75, 58.0], [64.53, 57.47], [64.0, 57.25], [63.75, 57.35], [63.5, 57.25], [63.25, 57.35], [63.18, 57.32], [63.03, 56.97], [62.68, 56.82], [62.53, 56.47], [62.0, 56.25], [61.75, 56.35], [61.5, 56.25], [61.25, 56.35], [61.0, 56.25], [60.75, 56.35], [60.5, 56.25], [60.25, 56.35], [60.0, 56.25], [59.75, 56.35], [59.5, 56.25], [59.25, 56.35], [59.0, 56.25], [58.75, 56.35], [58.5, 56.25], [58.25, 56.35], [58.0, 56.25], [57.75, 56.35], [57.5, 56.25], [57.25, 56.35], [57.0, 56.25], [56.75, 56.35], [56.68, 56.32], [56.53, 55.97], [56.0, 55.75], [55.75, 55.85], [55.5, 55.75], [55.25, 55.85], [55.0, 55.75], [54.75, 55.85], [54.5, 55.75], [54.25, 55.85], [54.0, 55.75], [53.75, 55.85], [53.5, 55.75], [53.25, 55.85], [53.0, 55.75], [52.75, 55.85], [52.5, 55.75], [52.25, 55.85], [52.0, 55.75], [51.47, 55.97], [51.25, 56.5], [51.35, 56.75], [51.25, 57.0], [51.47, 57.53], [51.82, 57.68], [51.97, 58.03], [52.32, 58.18], [52.35, 58.25], [52.25, 58.5], [52.38, 58.8], [51.97, 58.97], [51.82, 59.32], [51.47, 59.47], [51.32, 59.82], [51.25, 59.85], [51.0, 59.75], [50.47, 59.97], [50.25, 60.5], [50.35, 60.75], [50.32, 60.82], [49.97, 60.97], [49.75, 61.5]]]]}, "2019-04-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[49.75, 61.5], [49.97, 62.03], [50.5, 62.25], [51.03, 62.03], [51.18, 61.68], [51.25, 61.65], [51.32, 61.68], [51.47, 62.03], [52.0, 62.25], [52.25, 62.15], [52.5, 62.25], [52.75, 62.15], [53.0, 62.25], [53.25, 62.15], [53.5, 62.25], [53.75, 62.15], [54.0, 62.25], [54.53, 62.03], [54.68, 61.68], [55.03, 61.53], [55.18, 61.18], [55.25, 61.15], [55.5, 61.25], [56.03, 61.03], [56.18, 60.68], [56.25, 60.65], [56.5, 60.75], [57.03, 60.53], [57.25, 60.0], [57.04, 59.5], [57.25, 59.0], [57.13, 58.7], [57.5, 58.54], [58.0, 58.75], [58.25, 58.65], [58.32, 58.68], [58.35, 58.75], [58.25, 59.0], [58.47, 59.53], [59.0, 59.75], [59.25, 59.65], [59.5, 59.75], [59.75, 59.65], [60.0, 59.75], [60.25, 59.65], [60.5, 59.75], [61.03, 59.53], [61.18, 59.18], [61.25, 59.15], [61.5, 59.25], [61.75, 59.15], [62.0, 59.25], [62.25, 59.15], [62.5, 59.25], [63.0, 59.04], [63.5, 59.25], [64.03, 59.03], [64.18, 58.68], [64.53, 58.53], [64.68, 58.18], [64.75, 58.15], [65.0, 58.25], [65.25, 58.15], [65.32, 58.18], [65.47, 58.53], [66.0, 58.75], [66.25, 58.65], [66.5, 58.75], [66.75, 58.65], [67.0, 58.75], [67.25, 58.65], [67.5, 58.75], [67.75, 58.65], [68.0, 58.75], [68.53, 58.53], [68.75, 58.0], [68.53, 57.47], [68.0, 57.25], [67.75, 57.35], [67.5, 57.25], [67.25, 57.35], [67.0, 57.25], [66.75, 57.35], [66.5, 57.25], [66.25, 57.35], [66.18, 57.32], [66.03, 56.97], [65.5, 56.75], [65.25, 56.85], [65.0, 56.75], [64.75, 56.85], [64.5, 56.75], [64.25, 56.85], [64.0, 56.75], [63.75, 56.85], [63.5, 56.75], [63.0, 56.96], [62.68, 56.82], [62.53, 56.47], [62.0, 56.25], [61.75, 56.35], [61.5, 56.25], [61.25, 56.35], [61.0, 56.25], [60.75, 56.35], [60.5, 56.25], [60.25, 56.35], [60.0, 56.25], [59.75, 56.35], [59.5, 56.25], [59.25, 56.35], [59.0, 56.25], [58.75, 56.35], [58.5, 56.25], [58.25, 56.35], [58.0, 56.25], [57.75, 56.35], [57.5, 56.25], [57.25, 56.35], [57.0, 56.25], [56.75, 56.35], [56.68, 56.32], [56.53, 55.97], [56.0, 55.75], [55.75, 55.85], [55.5, 55.75], [55.25, 55.85], [55.0, 55.75], [54.75, 55.85], [54.5, 55.75], [54.25, 55.85], [54.0, 55.75], [53.75, 55.85], [53.5, 55.75], [53.25, 55.85], [53.0, 55.75], [52.75, 55.85], [52.5, 55.75], [52.25, 55.85], [52.0, 55.75], [51.47, 55.97], [51.25, 56.5], [51.35, 56.75], [51.25, 57.0], [51.47, 57.53], [51.82, 57.68], [51.97, 58.03], [52.32, 58.18], [52.35, 58.25], [52.25, 58.5], [52.38, 58.8], [51.97, 58.97], [51.82, 59.32], [51.47, 59.47], [51.32, 59.82], [51.25, 59.85], [51.0, 59.75], [50.47, 59.97], [50.25, 60.5], [50.35, 60.75], [50.32, 60.82], [49.97, 60.97], [49.75, 61.5]]]]}, "2019-04-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[49.75, 61.5], [49.97, 62.03], [50.5, 62.25], [51.03, 62.03], [51.18, 61.68], [51.25, 61.65], [51.32, 61.68], [51.47, 62.03], [52.0, 62.25], [52.25, 62.15], [52.5, 62.25], [52.75, 62.15], [53.0, 62.25], [53.25, 62.15], [53.5, 62.25], [53.75, 62.15], [54.0, 62.25], [54.53, 62.03], [54.68, 61.68], [55.03, 61.53], [55.18, 61.18], [55.25, 61.15], [55.5, 61.25], [56.03, 61.03], [56.18, 60.68], [56.25, 60.65], [56.5, 60.75], [57.03, 60.53], [57.25, 60.0], [57.04, 59.5], [57.25, 59.0], [57.13, 58.7], [57.5, 58.54], [58.0, 58.75], [58.25, 58.65], [58.32, 58.68], [58.35, 58.75], [58.25, 59.0], [58.47, 59.53], [59.0, 59.75], [59.25, 59.65], [59.5, 59.75], [59.75, 59.65], [60.0, 59.75], [60.25, 59.65], [60.5, 59.75], [61.03, 59.53], [61.18, 59.18], [61.25, 59.15], [61.5, 59.25], [61.75, 59.15], [62.0, 59.25], [62.25, 59.15], [62.5, 59.25], [63.0, 59.04], [63.5, 59.25], [64.03, 59.03], [64.18, 58.68], [64.53, 58.53], [64.68, 58.18], [64.75, 58.15], [65.0, 58.25], [65.25, 58.15], [65.32, 58.18], [65.47, 58.53], [66.0, 58.75], [66.25, 58.65], [66.5, 58.75], [66.75, 58.65], [67.0, 58.75], [67.25, 58.65], [67.5, 58.75], [67.75, 58.65], [68.0, 58.75], [68.53, 58.53], [68.75, 58.0], [68.53, 57.47], [68.0, 57.25], [67.75, 57.35], [67.5, 57.25], [67.25, 57.35], [67.0, 57.25], [66.75, 57.35], [66.5, 57.25], [66.25, 57.35], [66.18, 57.32], [66.03, 56.97], [65.5, 56.75], [65.25, 56.85], [65.0, 56.75], [64.75, 56.85], [64.5, 56.75], [64.25, 56.85], [64.0, 56.75], [63.75, 56.85], [63.5, 56.75], [63.0, 56.96], [62.68, 56.82], [62.53, 56.47], [62.0, 56.25], [61.75, 56.35], [61.5, 56.25], [61.25, 56.35], [61.0, 56.25], [60.75, 56.35], [60.5, 56.25], [60.25, 56.35], [60.0, 56.25], [59.75, 56.35], [59.5, 56.25], [59.25, 56.35], [59.0, 56.25], [58.75, 56.35], [58.5, 56.25], [58.25, 56.35], [58.0, 56.25], [57.75, 56.35], [57.5, 56.25], [57.25, 56.35], [57.0, 56.25], [56.75, 56.35], [56.68, 56.32], [56.53, 55.97], [56.0, 55.75], [55.75, 55.85], [55.5, 55.75], [55.25, 55.85], [55.0, 55.75], [54.75, 55.85], [54.5, 55.75], [54.25, 55.85], [54.0, 55.75], [53.75, 55.85], [53.5, 55.75], [53.25, 55.85], [53.0, 55.75], [52.75, 55.85], [52.5, 55.75], [52.25, 55.85], [52.0, 55.75], [51.47, 55.97], [51.25, 56.5], [51.35, 56.75], [51.25, 57.0], [51.47, 57.53], [51.82, 57.68], [51.97, 58.03], [52.32, 58.18], [52.35, 58.25], [52.25, 58.5], [52.38, 58.8], [51.97, 58.97], [51.82, 59.32], [51.47, 59.47], [51.32, 59.82], [51.25, 59.85], [51.0, 59.75], [50.47, 59.97], [50.25, 60.5], [50.35, 60.75], [50.32, 60.82], [49.97, 60.97], [49.75, 61.5]]]]}, "2019-05-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[62.97, 56.97], [62.75, 57.5], [62.97, 58.03], [63.5, 58.25], [63.75, 58.15], [64.0, 58.25], [64.25, 58.15], [64.5, 58.25], [64.75, 58.15], [65.0, 58.25], [65.25, 58.15], [65.32, 58.18], [65.47, 58.53], [66.0, 58.75], [66.25, 58.65], [66.5, 58.75], [66.75, 58.65], [67.0, 58.75], [67.25, 58.65], [67.5, 58.75], [67.75, 58.65], [68.0, 58.75], [68.53, 58.53], [68.75, 58.0], [68.53, 57.47], [68.0, 57.25], [67.75, 57.35], [67.5, 57.25], [67.25, 57.35], [67.0, 57.25], [66.75, 57.35], [66.5, 57.25], [66.25, 57.35], [66.18, 57.32], [66.03, 56.97], [65.5, 56.75], [65.25, 56.85], [65.0, 56.75], [64.75, 56.85], [64.5, 56.75], [64.25, 56.85], [64.0, 56.75], [63.75, 56.85], [63.5, 56.75], [62.97, 56.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -12.103847192558021}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.518134330071735}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-2.043378055239316, -1.1410305586683762, -2.7343599934849863, -1.046739953365659, 0.2652283431219189]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-2.44149374707348, -4.51412785197175, -6.043927391915645, -5.009409833369318, 0.0849076744622721]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.6615388614219215, -6.482432420518987, -8.659335964421489, -7.546867356833078, -6.763972085302879]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.969389973264697, -7.808755163515116, -12.103847192558021, -10.953696743068178, -7.229884862050255]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3121659154746619, -1.4110031398298906, -1.8685799481975147, -1.6112321259828013, -1.2828939883716979]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3875318416313018, -1.6239556268740625, -2.449218498150333, -2.111878044565343, -1.370517626312033]}}