{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:37.008099", "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": "2012-Oct-26_to_2012-Oct-28_265.5_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": 2012100001037}, "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": "October 26 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 28 2012"}, "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": 104992.227873704}, "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": 265.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "265.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 261.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 267.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 33.25}, "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": {"2012-10-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-99.25, 34.0], [-99.03, 34.53], [-98.68, 34.68], [-98.65, 34.75], [-98.75, 35.0], [-98.53, 35.53], [-98.18, 35.68], [-98.15, 35.75], [-98.25, 36.0], [-98.03, 36.53], [-97.5, 36.75], [-97.25, 36.65], [-97.0, 36.75], [-96.75, 36.65], [-96.68, 36.68], [-96.65, 36.75], [-96.75, 37.0], [-96.53, 37.53], [-96.18, 37.68], [-96.03, 38.03], [-95.68, 38.18], [-95.53, 38.53], [-95.0, 38.75], [-94.75, 38.65], [-94.5, 38.75], [-93.97, 38.53], [-93.82, 38.18], [-93.75, 38.15], [-93.68, 38.18], [-93.53, 38.53], [-93.0, 38.75], [-92.47, 38.53], [-92.25, 38.0], [-92.47, 37.47], [-92.82, 37.32], [-92.97, 36.97], [-93.32, 36.82], [-93.46, 36.5], [-93.25, 36.0], [-93.47, 35.47], [-94.0, 35.25], [-94.25, 35.35], [-94.32, 35.32], [-94.47, 34.97], [-94.82, 34.82], [-94.97, 34.47], [-95.5, 34.25], [-96.03, 34.47], [-96.18, 34.82], [-96.25, 34.85], [-96.32, 34.82], [-96.35, 34.75], [-96.25, 34.5], [-96.47, 33.97], [-96.82, 33.82], [-96.97, 33.47], [-97.32, 33.32], [-97.47, 32.97], [-98.0, 32.75], [-98.53, 32.97], [-98.68, 33.32], [-99.03, 33.47], [-99.25, 34.0]]]]}, "2012-10-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-99.25, 34.0], [-99.03, 34.53], [-98.68, 34.68], [-98.65, 34.75], [-98.75, 35.0], [-98.53, 35.53], [-98.18, 35.68], [-98.15, 35.75], [-98.25, 36.0], [-98.03, 36.53], [-97.5, 36.75], [-97.25, 36.65], [-97.0, 36.75], [-96.75, 36.65], [-96.68, 36.68], [-96.65, 36.75], [-96.75, 37.0], [-96.53, 37.53], [-96.18, 37.68], [-96.03, 38.03], [-95.68, 38.18], [-95.53, 38.53], [-95.0, 38.75], [-94.75, 38.65], [-94.5, 38.75], [-93.97, 38.53], [-93.82, 38.18], [-93.75, 38.15], [-93.68, 38.18], [-93.53, 38.53], [-93.0, 38.75], [-92.47, 38.53], [-92.25, 38.0], [-92.47, 37.47], [-92.82, 37.32], [-92.97, 36.97], [-93.32, 36.82], [-93.46, 36.5], [-93.25, 36.0], [-93.47, 35.47], [-94.0, 35.25], [-94.25, 35.35], [-94.32, 35.32], [-94.47, 34.97], [-94.82, 34.82], [-94.97, 34.47], [-95.5, 34.25], [-96.03, 34.47], [-96.18, 34.82], [-96.25, 34.85], [-96.32, 34.82], [-96.35, 34.75], [-96.25, 34.5], [-96.47, 33.97], [-96.82, 33.82], [-96.97, 33.47], [-97.32, 33.32], [-97.47, 32.97], [-98.0, 32.75], [-98.53, 32.97], [-98.68, 33.32], [-99.03, 33.47], [-99.25, 34.0]]]]}, "2012-10-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-99.25, 34.0], [-99.03, 34.53], [-98.68, 34.68], [-98.65, 34.75], [-98.75, 35.0], [-98.53, 35.53], [-98.18, 35.68], [-98.15, 35.75], [-98.25, 36.0], [-98.03, 36.53], [-97.5, 36.75], [-97.25, 36.65], [-97.0, 36.75], [-96.75, 36.65], [-96.68, 36.68], [-96.65, 36.75], [-96.75, 37.0], [-96.53, 37.53], [-96.18, 37.68], [-96.03, 38.03], [-95.68, 38.18], [-95.53, 38.53], [-95.0, 38.75], [-94.75, 38.65], [-94.5, 38.75], [-93.97, 38.53], [-93.82, 38.18], [-93.75, 38.15], [-93.68, 38.18], [-93.53, 38.53], [-93.0, 38.75], [-92.47, 38.53], [-92.25, 38.0], [-92.47, 37.47], [-92.82, 37.32], [-92.97, 36.97], [-93.32, 36.82], [-93.46, 36.5], [-93.25, 36.0], [-93.47, 35.47], [-94.0, 35.25], [-94.25, 35.35], [-94.32, 35.32], [-94.47, 34.97], [-94.82, 34.82], [-94.97, 34.47], [-95.5, 34.25], [-96.03, 34.47], [-96.18, 34.82], [-96.25, 34.85], [-96.32, 34.82], [-96.35, 34.75], [-96.25, 34.5], [-96.47, 33.97], [-96.82, 33.82], [-96.97, 33.47], [-97.32, 33.32], [-97.47, 32.97], [-98.0, 32.75], [-98.53, 32.97], [-98.68, 33.32], [-99.03, 33.47], [-99.25, 34.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.168908432338014}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.664184270591805}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.1113879523064725, 4.874029837277817, 5.855273803961154]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [4.923461281075731, 2.6031641520166318, 3.6360781511415894]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.789993067785014, -8.718513677873217, -7.484046066117186]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.5216441150332685, -9.168908432338014, -8.161865904023273]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3893894079243763, -1.7498359625186897, -1.4799007436440321]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.46599965092212, -1.8330629466390365, -1.6111481407772557]}}