{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:19:47.651922", "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": "2020-May-07_to_2020-May-09_122.5_64.5"}, "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": 2020050000220}, "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": "May 07 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 09 2020"}, "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": 94330.59285857725}, "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.Siberia", "Russian-Arctic"]}, "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": ["Laptev 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": 64.5}, "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": 122.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "122.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 120.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 124.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 61.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 67.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-05-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.85, 64.25], [119.75, 64.5], [119.97, 65.03], [120.32, 65.18], [120.46, 65.5], [120.25, 66.0], [120.35, 66.25], [120.25, 66.5], [120.47, 67.03], [121.0, 67.25], [121.25, 67.15], [121.5, 67.25], [121.75, 67.15], [121.82, 67.18], [121.97, 67.53], [122.5, 67.75], [122.75, 67.65], [123.0, 67.75], [123.25, 67.65], [123.5, 67.75], [123.75, 67.65], [124.0, 67.75], [124.53, 67.53], [124.75, 67.0], [124.65, 66.75], [124.75, 66.5], [124.65, 66.25], [124.75, 66.0], [124.65, 65.75], [124.68, 65.68], [125.03, 65.53], [125.25, 65.0], [125.03, 64.47], [124.68, 64.32], [124.65, 64.25], [124.75, 64.0], [124.65, 63.75], [124.75, 63.5], [124.65, 63.25], [124.75, 63.0], [124.65, 62.75], [124.75, 62.5], [124.65, 62.25], [124.75, 62.0], [124.53, 61.47], [124.18, 61.32], [124.03, 60.97], [123.5, 60.75], [122.97, 60.97], [122.82, 61.32], [122.75, 61.35], [122.5, 61.25], [121.97, 61.47], [121.75, 62.0], [121.85, 62.25], [121.82, 62.32], [121.75, 62.35], [121.5, 62.25], [120.97, 62.47], [120.82, 62.82], [120.75, 62.85], [120.5, 62.75], [119.97, 62.97], [119.75, 63.5], [119.85, 63.75], [119.75, 64.0], [119.85, 64.25]]]]}, "2020-05-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.85, 64.25], [119.75, 64.5], [119.97, 65.03], [120.32, 65.18], [120.46, 65.5], [120.25, 66.0], [120.35, 66.25], [120.25, 66.5], [120.47, 67.03], [121.0, 67.25], [121.25, 67.15], [121.5, 67.25], [121.75, 67.15], [121.82, 67.18], [121.97, 67.53], [122.5, 67.75], [122.75, 67.65], [123.0, 67.75], [123.25, 67.65], [123.5, 67.75], [123.75, 67.65], [124.0, 67.75], [124.53, 67.53], [124.75, 67.0], [124.65, 66.75], [124.75, 66.5], [124.65, 66.25], [124.75, 66.0], [124.65, 65.75], [124.68, 65.68], [125.03, 65.53], [125.25, 65.0], [125.03, 64.47], [124.68, 64.32], [124.65, 64.25], [124.75, 64.0], [124.65, 63.75], [124.75, 63.5], [124.65, 63.25], [124.75, 63.0], [124.65, 62.75], [124.75, 62.5], [124.65, 62.25], [124.75, 62.0], [124.53, 61.47], [124.18, 61.32], [124.03, 60.97], [123.5, 60.75], [122.97, 60.97], [122.82, 61.32], [122.75, 61.35], [122.5, 61.25], [121.97, 61.47], [121.75, 62.0], [121.85, 62.25], [121.82, 62.32], [121.75, 62.35], [121.5, 62.25], [120.97, 62.47], [120.82, 62.82], [120.75, 62.85], [120.5, 62.75], [119.97, 62.97], [119.75, 63.5], [119.85, 63.75], [119.75, 64.0], [119.85, 64.25]]]]}, "2020-05-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.85, 64.25], [119.75, 64.5], [119.97, 65.03], [120.32, 65.18], [120.46, 65.5], [120.25, 66.0], [120.35, 66.25], [120.25, 66.5], [120.47, 67.03], [121.0, 67.25], [121.25, 67.15], [121.5, 67.25], [121.75, 67.15], [121.82, 67.18], [121.97, 67.53], [122.5, 67.75], [122.75, 67.65], [123.0, 67.75], [123.25, 67.65], [123.5, 67.75], [123.75, 67.65], [124.0, 67.75], [124.53, 67.53], [124.75, 67.0], [124.65, 66.75], [124.75, 66.5], [124.65, 66.25], [124.75, 66.0], [124.65, 65.75], [124.68, 65.68], [125.03, 65.53], [125.25, 65.0], [125.03, 64.47], [124.68, 64.32], [124.65, 64.25], [124.75, 64.0], [124.65, 63.75], [124.75, 63.5], [124.65, 63.25], [124.75, 63.0], [124.65, 62.75], [124.75, 62.5], [124.65, 62.25], [124.75, 62.0], [124.53, 61.47], [124.18, 61.32], [124.03, 60.97], [123.5, 60.75], [122.97, 60.97], [122.82, 61.32], [122.75, 61.35], [122.5, 61.25], [121.97, 61.47], [121.75, 62.0], [121.85, 62.25], [121.82, 62.32], [121.75, 62.35], [121.5, 62.25], [120.97, 62.47], [120.82, 62.82], [120.75, 62.85], [120.5, 62.75], [119.97, 62.97], [119.75, 63.5], [119.85, 63.75], [119.75, 64.0], [119.85, 64.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.170783682942897}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.414494296052229}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-4.703947530791652, -5.606820221697774, -4.76932766289849]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-7.305404939786797, -7.138129569162004, -6.6976716793608375]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.749570877987644, -7.988811118751093, -7.5051008914179445]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.966577652853005, -9.390416039800414, -10.170783682942897]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6912103753067764, -2.024834203850418, -1.9053238684262983]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.108346738630645, -2.4183223091919133, -2.588357328595156]}}