{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:07:47.728399", "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": "2017-May-01_to_2017-May-03_87.5_48.5"}, "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": 2017050000115}, "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 01 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 03 2017"}, "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": 66360.59253797932}, "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": ["China", "Kazakhstan", "Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": 48.5}, "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": 87.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "87.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 82.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 87.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 47.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 51.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-05-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[81.75, 51.0], [81.97, 51.53], [82.5, 51.75], [82.75, 51.65], [83.0, 51.75], [83.25, 51.65], [83.5, 51.75], [83.75, 51.65], [84.0, 51.75], [84.53, 51.53], [84.7, 51.13], [85.0, 51.25], [85.53, 51.03], [85.75, 50.5], [85.65, 50.25], [85.68, 50.18], [85.75, 50.15], [86.0, 50.25], [86.25, 50.15], [86.5, 50.25], [87.03, 50.03], [87.25, 49.5], [87.13, 49.2], [87.25, 49.15], [87.5, 49.25], [88.03, 49.03], [88.25, 48.5], [88.15, 48.25], [88.25, 48.0], [88.03, 47.47], [87.5, 47.25], [87.25, 47.35], [87.0, 47.25], [86.75, 47.35], [86.5, 47.25], [86.25, 47.35], [86.0, 47.25], [85.75, 47.35], [85.5, 47.25], [84.97, 47.47], [84.82, 47.82], [84.47, 47.97], [84.32, 48.32], [84.25, 48.35], [84.0, 48.25], [83.47, 48.47], [83.32, 48.82], [82.97, 48.97], [82.75, 49.5], [82.85, 49.75], [82.82, 49.82], [82.47, 49.97], [82.32, 50.32], [81.97, 50.47], [81.75, 51.0]]]]}, "2017-05-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[81.75, 51.0], [81.97, 51.53], [82.5, 51.75], [82.75, 51.65], [83.0, 51.75], [83.25, 51.65], [83.5, 51.75], [83.75, 51.65], [84.0, 51.75], [84.53, 51.53], [84.7, 51.13], [85.0, 51.25], [85.53, 51.03], [85.75, 50.5], [85.65, 50.25], [85.68, 50.18], [85.75, 50.15], [86.0, 50.25], [86.25, 50.15], [86.5, 50.25], [87.03, 50.03], [87.25, 49.5], [87.13, 49.2], [87.25, 49.15], [87.5, 49.25], [88.03, 49.03], [88.25, 48.5], [88.15, 48.25], [88.25, 48.0], [88.03, 47.47], [87.5, 47.25], [87.25, 47.35], [87.0, 47.25], [86.75, 47.35], [86.5, 47.25], [86.25, 47.35], [86.0, 47.25], [85.75, 47.35], [85.5, 47.25], [84.97, 47.47], [84.82, 47.82], [84.47, 47.97], [84.32, 48.32], [84.25, 48.35], [84.0, 48.25], [83.47, 48.47], [83.32, 48.82], [82.97, 48.97], [82.75, 49.5], [82.85, 49.75], [82.82, 49.82], [82.47, 49.97], [82.32, 50.32], [81.97, 50.47], [81.75, 51.0]]]]}, "2017-05-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[81.75, 51.0], [81.97, 51.53], [82.5, 51.75], [82.75, 51.65], [83.0, 51.75], [83.25, 51.65], [83.5, 51.75], [83.75, 51.65], [84.0, 51.75], [84.53, 51.53], [84.7, 51.13], [85.0, 51.25], [85.53, 51.03], [85.75, 50.5], [85.65, 50.25], [85.68, 50.18], [85.75, 50.15], [86.0, 50.25], [86.25, 50.15], [86.5, 50.25], [87.03, 50.03], [87.25, 49.5], [87.13, 49.2], [87.25, 49.15], [87.5, 49.25], [88.03, 49.03], [88.25, 48.5], [88.15, 48.25], [88.25, 48.0], [88.03, 47.47], [87.5, 47.25], [87.25, 47.35], [87.0, 47.25], [86.75, 47.35], [86.5, 47.25], [86.25, 47.35], [86.0, 47.25], [85.75, 47.35], [85.5, 47.25], [84.97, 47.47], [84.82, 47.82], [84.47, 47.97], [84.32, 48.32], [84.25, 48.35], [84.0, 48.25], [83.47, 48.47], [83.32, 48.82], [82.97, 48.97], [82.75, 49.5], [82.85, 49.75], [82.82, 49.82], [82.47, 49.97], [82.32, 50.32], [81.97, 50.47], [81.75, 51.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.116191977507697}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.296082970473009}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-0.2482669732909244, -2.390675482746758, -0.6702326164661372]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-5.792101956998522, -7.635366596538972, -6.447120228430435]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.156201404829927, -8.532276243822684, -7.19977126276642]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.015091834231669, -10.116191977507697, -9.923596080089226]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4607706209144593, -2.0688879431124025, -1.769653479567]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6810261421498436, -2.5480300645393212, -2.4689776172184543]}}