{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:22.479912", "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": "2015-Jul-05_to_2015-Jul-07_88.0_48.0"}, "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": 2015070000349}, "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": "July 05 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 07 2015"}, "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": 50533.12999967255}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Siberia", "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": 48.0}, "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": 88.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "88.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 86.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 90.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 45.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 48.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-07-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[86.25, 48.0], [86.47, 48.53], [87.0, 48.75], [87.25, 48.65], [87.5, 48.75], [87.75, 48.65], [88.0, 48.75], [88.53, 48.53], [88.68, 48.18], [88.75, 48.15], [89.0, 48.25], [89.25, 48.15], [89.5, 48.25], [89.75, 48.15], [90.0, 48.25], [90.53, 48.03], [90.68, 47.68], [91.03, 47.53], [91.25, 47.0], [91.15, 46.75], [91.25, 46.5], [91.03, 45.97], [90.5, 45.75], [90.25, 45.85], [90.18, 45.82], [90.03, 45.47], [89.5, 45.25], [88.97, 45.47], [88.82, 45.82], [88.75, 45.85], [88.5, 45.75], [88.25, 45.85], [88.0, 45.75], [87.75, 45.85], [87.5, 45.75], [86.97, 45.97], [86.75, 46.5], [86.85, 46.75], [86.75, 47.0], [86.85, 47.25], [86.82, 47.32], [86.47, 47.47], [86.25, 48.0]]]]}, "2015-07-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[86.25, 48.0], [86.47, 48.53], [87.0, 48.75], [87.25, 48.65], [87.5, 48.75], [87.75, 48.65], [88.0, 48.75], [88.53, 48.53], [88.68, 48.18], [88.75, 48.15], [89.0, 48.25], [89.25, 48.15], [89.5, 48.25], [89.75, 48.15], [90.0, 48.25], [90.53, 48.03], [90.68, 47.68], [91.03, 47.53], [91.25, 47.0], [91.15, 46.75], [91.25, 46.5], [91.03, 45.97], [90.5, 45.75], [90.25, 45.85], [90.18, 45.82], [90.03, 45.47], [89.5, 45.25], [88.97, 45.47], [88.82, 45.82], [88.75, 45.85], [88.5, 45.75], [88.25, 45.85], [88.0, 45.75], [87.75, 45.85], [87.5, 45.75], [86.97, 45.97], [86.75, 46.5], [86.85, 46.75], [86.75, 47.0], [86.85, 47.25], [86.82, 47.32], [86.47, 47.47], [86.25, 48.0]]]]}, "2015-07-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[86.25, 48.0], [86.47, 48.53], [87.0, 48.75], [87.25, 48.65], [87.5, 48.75], [87.75, 48.65], [88.0, 48.75], [88.53, 48.53], [88.68, 48.18], [88.75, 48.15], [89.0, 48.25], [89.25, 48.15], [89.5, 48.25], [89.75, 48.15], [90.0, 48.25], [90.53, 48.03], [90.68, 47.68], [91.03, 47.53], [91.25, 47.0], [91.15, 46.75], [91.25, 46.5], [91.03, 45.97], [90.5, 45.75], [90.25, 45.85], [90.18, 45.82], [90.03, 45.47], [89.5, 45.25], [88.97, 45.47], [88.82, 45.82], [88.75, 45.85], [88.5, 45.75], [88.25, 45.85], [88.0, 45.75], [87.75, 45.85], [87.5, 45.75], [86.97, 45.97], [86.75, 46.5], [86.85, 46.75], [86.75, 47.0], [86.85, 47.25], [86.82, 47.32], [86.47, 47.47], [86.25, 48.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.190402621094847}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.348210341958891}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.9227221602452, 12.398490066972215, 15.096026560382086]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [5.11125815412413, 1.3672339738743062, 5.303003324198244]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.393693689621408, -8.090188234894034, -5.560749101361232]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.468859008129755, -9.190402621094847, -6.960197141857748]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.629750631029884, -2.4842154949413437, -1.669262548794282]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8893982216407479, -2.8738725261347966, -2.033012831913199]}}