{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:43:53.665065", "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": "2010-Jan-29_to_2010-Jan-31_260.5_37.0"}, "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": 2010010000925}, "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": "January 29 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 31 2010"}, "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": 106865.50841912683}, "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": ["United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.North-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North America"]}, "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": 37.0}, "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": 260.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "260.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 258.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 263.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 34.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 38.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-01-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.75, 37.0], [-101.53, 37.53], [-101.18, 37.68], [-101.03, 38.03], [-100.68, 38.18], [-100.53, 38.53], [-100.0, 38.75], [-99.75, 38.65], [-99.5, 38.75], [-99.0, 38.54], [-98.5, 38.75], [-98.25, 38.65], [-98.0, 38.75], [-97.47, 38.53], [-97.25, 38.0], [-97.46, 37.5], [-97.32, 37.18], [-97.25, 37.15], [-97.0, 37.25], [-96.75, 37.15], [-96.5, 37.25], [-95.97, 37.03], [-95.75, 36.5], [-95.85, 36.25], [-95.75, 36.0], [-95.97, 35.47], [-96.32, 35.32], [-96.47, 34.97], [-97.0, 34.75], [-97.25, 34.85], [-97.32, 34.82], [-97.35, 34.75], [-97.25, 34.5], [-97.47, 33.97], [-98.0, 33.75], [-98.53, 33.97], [-98.68, 34.32], [-99.03, 34.47], [-99.18, 34.82], [-99.25, 34.85], [-99.5, 34.75], [-100.03, 34.97], [-100.18, 35.32], [-100.25, 35.35], [-100.5, 35.25], [-101.03, 35.47], [-101.25, 36.0], [-101.15, 36.25], [-101.18, 36.32], [-101.53, 36.47], [-101.75, 37.0]]]]}, "2010-01-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.75, 37.0], [-101.53, 37.53], [-101.18, 37.68], [-101.03, 38.03], [-100.68, 38.18], [-100.53, 38.53], [-100.0, 38.75], [-99.75, 38.65], [-99.5, 38.75], [-99.0, 38.54], [-98.5, 38.75], [-98.25, 38.65], [-98.0, 38.75], [-97.47, 38.53], [-97.25, 38.0], [-97.46, 37.5], [-97.32, 37.18], [-97.25, 37.15], [-97.0, 37.25], [-96.75, 37.15], [-96.5, 37.25], [-95.97, 37.03], [-95.75, 36.5], [-95.85, 36.25], [-95.75, 36.0], [-95.97, 35.47], [-96.32, 35.32], [-96.47, 34.97], [-97.0, 34.75], [-97.25, 34.85], [-97.32, 34.82], [-97.35, 34.75], [-97.25, 34.5], [-97.47, 33.97], [-98.0, 33.75], [-98.53, 33.97], [-98.68, 34.32], [-99.03, 34.47], [-99.18, 34.82], [-99.25, 34.85], [-99.5, 34.75], [-100.03, 34.97], [-100.18, 35.32], [-100.25, 35.35], [-100.5, 35.25], [-101.03, 35.47], [-101.25, 36.0], [-101.15, 36.25], [-101.18, 36.32], [-101.53, 36.47], [-101.75, 37.0]]]]}, "2010-01-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.75, 37.0], [-101.53, 37.53], [-101.18, 37.68], [-101.03, 38.03], [-100.68, 38.18], [-100.53, 38.53], [-100.0, 38.75], [-99.75, 38.65], [-99.5, 38.75], [-99.0, 38.54], [-98.5, 38.75], [-98.25, 38.65], [-98.0, 38.75], [-97.47, 38.53], [-97.25, 38.0], [-97.46, 37.5], [-97.32, 37.18], [-97.25, 37.15], [-97.0, 37.25], [-96.75, 37.15], [-96.5, 37.25], [-95.97, 37.03], [-95.75, 36.5], [-95.85, 36.25], [-95.75, 36.0], [-95.97, 35.47], [-96.32, 35.32], [-96.47, 34.97], [-97.0, 34.75], [-97.25, 34.85], [-97.32, 34.82], [-97.35, 34.75], [-97.25, 34.5], [-97.47, 33.97], [-98.0, 33.75], [-98.53, 33.97], [-98.68, 34.32], [-99.03, 34.47], [-99.18, 34.82], [-99.25, 34.85], [-99.5, 34.75], [-100.03, 34.97], [-100.18, 35.32], [-100.25, 35.35], [-100.5, 35.25], [-101.03, 35.47], [-101.25, 36.0], [-101.15, 36.25], [-101.18, 36.32], [-101.53, 36.47], [-101.75, 37.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -13.685681489718547}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -10.155615368020783}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-6.452941655346876, -8.839028459578401, -7.336677274876536]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-8.525412259030475, -12.057677171424302, -10.470221707259611]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-9.136540428238359, -11.411980990685299, -9.918324685138698]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-10.856217442491982, -13.685681489718547, -13.370789356663408]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6413793294304864, -1.9374621342524636, -1.6334606555092697]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9887694698834013, -2.3605184669792054, -2.0898787362226448]}}