{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:06:00.904870", "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": "2016-Aug-19_to_2016-Aug-24_233.5_38.0"}, "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": 2016080000559}, "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 19 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 24 2016"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 118698.78541836547}, "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": ["N.Pacific-Ocean", "W.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": ["North Pacific Ocean"]}, "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": 38.0}, "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": 233.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "233.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 232.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 236.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 35.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 41.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-08-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-127.03, 39.03], [-126.5, 39.25], [-126.25, 39.15], [-126.18, 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[-124.25, 38.35]]]]}, "2016-08-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-127.53, 39.53], [-127.18, 39.68], [-127.15, 39.75], [-127.25, 40.0], [-127.03, 40.53], [-126.68, 40.68], [-126.53, 41.03], [-126.0, 41.25], [-125.75, 41.15], [-125.68, 41.18], [-125.53, 41.53], [-125.0, 41.75], [-124.75, 41.65], [-124.5, 41.75], [-123.97, 41.53], [-123.75, 41.0], [-123.87, 40.7], [-123.47, 40.53], [-123.25, 40.0], [-123.35, 39.75], [-123.25, 39.5], [-123.35, 39.25], [-123.25, 39.0], [-123.47, 38.47], [-124.0, 38.25], [-123.47, 38.03], [-123.25, 37.5], [-123.35, 37.25], [-123.25, 37.0], [-123.35, 36.75], [-123.25, 36.5], [-123.47, 35.97], [-123.82, 35.82], [-123.97, 35.47], [-124.5, 35.25], [-124.75, 35.35], [-125.0, 35.25], [-125.25, 35.35], [-125.5, 35.25], [-125.75, 35.35], [-126.0, 35.25], [-126.53, 35.47], [-126.75, 36.0], [-126.65, 36.25], [-126.75, 36.5], [-126.65, 36.75], [-126.75, 37.0], [-126.62, 37.3], [-127.03, 37.47], [-127.18, 37.82], [-127.53, 37.97], 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"anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.6562612996939947, -2.8094211884859988, -2.8786011669208165, -2.0111168912414996, -1.1773153612533633, -1.1213383340912628]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8509823081483614, -2.104912797074769, -2.0735608434690795, -1.437640833909911, -1.2321731044080668, -1.2067031264908736]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.6517700928847043, -2.8322258372849918, -2.929023438239739, -1.7819825526177084, -1.2919389168718374, -1.2067031264908736]}}