{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:45:26.297386", "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-Aug-25_to_2010-Aug-27_262.0_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": 2010080001090}, "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 25 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 27 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": 54080.09721391669}, "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": 262.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "262.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 259.75}, "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": 36.25}, "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": {"2010-08-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-100.25, 38.0], [-100.03, 38.53], [-99.5, 38.75], [-99.25, 38.65], [-99.0, 38.75], [-98.75, 38.65], [-98.5, 38.75], [-98.25, 38.65], [-98.0, 38.75], [-97.75, 38.65], [-97.5, 38.75], [-96.97, 38.53], [-96.82, 38.18], [-96.75, 38.15], [-96.5, 38.25], [-95.97, 38.03], [-95.75, 37.5], [-95.97, 36.97], [-96.32, 36.82], [-96.35, 36.75], [-96.25, 36.5], [-96.47, 35.97], [-97.0, 35.75], [-97.25, 35.85], [-97.5, 35.75], [-97.75, 35.85], [-98.0, 35.75], [-98.53, 35.97], [-98.68, 36.32], [-98.75, 36.35], [-99.0, 36.25], [-99.25, 36.35], [-99.5, 36.25], [-99.75, 36.35], [-100.0, 36.25], [-100.53, 36.47], [-100.75, 37.0], [-100.53, 37.53], [-100.18, 37.68], [-100.15, 37.75], [-100.25, 38.0]]]]}, "2010-08-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-100.25, 38.0], [-100.03, 38.53], [-99.5, 38.75], [-99.25, 38.65], [-99.0, 38.75], [-98.75, 38.65], [-98.5, 38.75], [-98.25, 38.65], [-98.0, 38.75], [-97.75, 38.65], [-97.5, 38.75], [-96.97, 38.53], [-96.82, 38.18], [-96.75, 38.15], [-96.5, 38.25], [-95.97, 38.03], [-95.75, 37.5], [-95.97, 36.97], [-96.32, 36.82], [-96.35, 36.75], [-96.25, 36.5], [-96.47, 35.97], [-97.0, 35.75], [-97.25, 35.85], [-97.5, 35.75], [-97.75, 35.85], [-98.0, 35.75], [-98.53, 35.97], [-98.68, 36.32], [-98.75, 36.35], [-99.0, 36.25], [-99.25, 36.35], [-99.5, 36.25], [-99.75, 36.35], [-100.0, 36.25], [-100.53, 36.47], [-100.75, 37.0], [-100.53, 37.53], [-100.18, 37.68], [-100.15, 37.75], [-100.25, 38.0]]]]}, "2010-08-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-100.25, 38.0], [-100.03, 38.53], [-99.5, 38.75], [-99.25, 38.65], [-99.0, 38.75], [-98.75, 38.65], [-98.5, 38.75], [-98.25, 38.65], [-98.0, 38.75], [-97.75, 38.65], [-97.5, 38.75], [-96.97, 38.53], [-96.82, 38.18], [-96.75, 38.15], [-96.5, 38.25], [-95.97, 38.03], [-95.75, 37.5], [-95.97, 36.97], [-96.32, 36.82], [-96.35, 36.75], [-96.25, 36.5], [-96.47, 35.97], [-97.0, 35.75], [-97.25, 35.85], [-97.5, 35.75], [-97.75, 35.85], [-98.0, 35.75], [-98.53, 35.97], [-98.68, 36.32], [-98.75, 36.35], [-99.0, 36.25], [-99.25, 36.35], [-99.5, 36.25], [-99.75, 36.35], [-100.0, 36.25], [-100.53, 36.47], [-100.75, 37.0], [-100.53, 37.53], [-100.18, 37.68], [-100.15, 37.75], [-100.25, 38.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.088466738447437}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.369328613571767}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.30305414836164, 20.446612045221798, 21.956068761915105]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.090216438991945, 19.3102689656842, 21.09930848704181]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.038118921612869, -5.852750901607336, -4.217116017495096]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.088466738447437, -6.953052375991888, -5.0181286012357305]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.114522700337959, -2.0955585425109513, -1.4971438073905317]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.4672439936795545, -2.455177774131055, -1.7743714916242719]}}