{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:08:38.920503", "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-Aug-05_to_2017-Aug-09_276.5_38.5"}, "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": 2017080000206}, "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": "August 05 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 09 2017"}, "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": 110525.22068092364}, "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": ["E.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": 38.5}, "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": 276.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "276.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 273.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 280.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 37.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 40.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-08-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-87.03, 39.53], [-86.5, 39.75], [-86.0, 39.54], [-85.5, 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38.0], [-87.04, 38.5], [-87.25, 39.0], [-87.03, 39.53]]]]}, "2017-08-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-84.53, 37.97], [-84.75, 38.5], [-84.53, 39.03], [-84.0, 39.25], [-83.75, 39.15], [-83.5, 39.25], [-83.25, 39.15], [-83.0, 39.25], [-82.47, 39.03], [-82.25, 38.5], [-82.47, 37.97], [-83.0, 37.75], [-83.25, 37.85], [-83.5, 37.75], [-83.75, 37.85], [-84.0, 37.75], [-84.53, 37.97]]]]}, "2017-08-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-84.53, 37.97], [-84.75, 38.5], [-84.53, 39.03], [-84.0, 39.25], [-83.75, 39.15], [-83.5, 39.25], [-83.25, 39.15], [-83.0, 39.25], [-82.47, 39.03], [-82.25, 38.5], [-82.47, 37.97], [-83.0, 37.75], [-83.25, 37.85], [-83.5, 37.75], [-83.75, 37.85], [-84.0, 37.75], [-84.53, 37.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.601321371388565}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.261223546366719}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.12144474322372, 19.66679999621084, 19.75049322514053, 20.861588508199645, 20.788921037336706]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.105795698026384, 18.322986787903687, 18.702036758731822, 20.656269774001032, 20.5882809307746]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.7837939791752975, -4.148359759510546, -3.982404123473412, -3.2245044175353996, -3.2910052549583875]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.601321371388565, -4.890806275851276, -5.276501298259916, -3.3653182887160256, -3.423987920623347]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8895887222783638, -1.6610071892169953, -1.620719391772148, -1.3475892413588344, -1.3866652009809426]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.260026141884577, -1.9762043799899585, -2.143042219472506, -1.3930148341089903, -1.431831470021312]}}