{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:54.816733", "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": "2011-Jul-10_to_2011-Jul-12_72.0_62.5"}, "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": 2011070000729}, "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": "July 10 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 12 2011"}, "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": 64152.471611906614}, "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": ["Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Siberia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "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": 62.5}, "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": 72.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "72.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 68.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 74.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 60.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 64.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-07-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[67.85, 63.25], [67.75, 63.5], [67.97, 64.03], [68.5, 64.25], 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64.25], [68.75, 64.15], [69.0, 64.25], [69.25, 64.15], [69.32, 64.18], [69.47, 64.53], [70.0, 64.75], [70.53, 64.53], [70.68, 64.18], [71.03, 64.03], [71.18, 63.68], [71.25, 63.65], [71.5, 63.75], [71.75, 63.65], [72.0, 63.75], [72.25, 63.65], [72.5, 63.75], [72.75, 63.65], [73.0, 63.75], [73.25, 63.65], [73.5, 63.75], [73.75, 63.65], [74.0, 63.75], [74.53, 63.53], [74.75, 63.0], [74.65, 62.75], [74.75, 62.5], [74.53, 61.97], [74.18, 61.82], [74.03, 61.47], [73.5, 61.25], [73.25, 61.35], [73.18, 61.32], [73.03, 60.97], [72.5, 60.75], [72.25, 60.85], [72.18, 60.82], [72.03, 60.47], [71.5, 60.25], [70.97, 60.47], [70.82, 60.82], [70.75, 60.85], [70.5, 60.75], [69.97, 60.97], [69.82, 61.32], [69.75, 61.35], [69.5, 61.25], [68.97, 61.47], [68.82, 61.82], [68.75, 61.85], [68.5, 61.75], [67.97, 61.97], [67.75, 62.5], [67.85, 62.75], [67.75, 63.0], [67.85, 63.25]]]]}, "2011-07-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[67.85, 63.25], [67.75, 63.5], [67.97, 64.03], 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"value": -7.726517347136564}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.308359023565014}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [10.209295156721055, 10.033247164195132, 10.761029380275659]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [7.812056629677102, 9.240431623319239, 9.603946579083697]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.471875579918617, -6.61089315598315, -5.842308334793284]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.726517347136564, -7.284696116952148, -6.486682050674176]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5564703681828784, -1.6261063329046062, -1.4880347804904672]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8094139440664392, -1.8020775666642883, -1.6429886213934084]}}