{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:09.515043", "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": "2015-Jun-15_to_2015-Jun-17_26.0_66.0"}, "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": 2015060000585}, "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": "June 15 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 17 2015"}, "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": 68317.99991229326}, "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": ["Finland", "Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Europe"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "Europe"]}, "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": 66.0}, "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": 26.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "26.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 24.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 30.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 63.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 67.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-06-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.75, 64.5], [23.97, 65.03], [24.5, 65.25], [24.75, 65.15], 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"coordinates": [[[[23.75, 64.5], [23.97, 65.03], [24.5, 65.25], [24.75, 65.15], [24.82, 65.18], [24.96, 65.5], [24.75, 66.0], [24.97, 66.53], [25.38, 66.7], [25.25, 67.0], [25.47, 67.53], [26.0, 67.75], [26.25, 67.65], [26.5, 67.75], [26.75, 67.65], [26.82, 67.68], [26.97, 68.03], [27.5, 68.25], [28.03, 68.03], [28.18, 67.68], [28.25, 67.65], [28.5, 67.75], [28.75, 67.65], [29.0, 67.75], [29.53, 67.53], [29.68, 67.18], [30.03, 67.03], [30.18, 66.68], [30.53, 66.53], [30.75, 66.0], [30.53, 65.47], [30.18, 65.32], [30.03, 64.97], [29.68, 64.82], [29.53, 64.47], [29.18, 64.32], [29.03, 63.97], [28.68, 63.82], [28.53, 63.47], [28.18, 63.32], [28.03, 62.97], [27.5, 62.75], [27.25, 62.85], [27.0, 62.75], [26.75, 62.85], [26.5, 62.75], [25.97, 62.97], [25.82, 63.32], [25.75, 63.35], [25.5, 63.25], [25.25, 63.35], [25.0, 63.25], [24.47, 63.47], [24.32, 63.82], [23.97, 63.97], [23.75, 64.5]], [[26.88, 65.8], [26.75, 65.85], [26.68, 65.82], [26.63, 65.7], [26.75, 65.65], [26.82, 65.68], [26.88, 65.8]]]]}, "2015-06-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.75, 64.5], [23.97, 65.03], [24.5, 65.25], [24.75, 65.15], [24.82, 65.18], [24.96, 65.5], [24.75, 66.0], [24.97, 66.53], [25.38, 66.7], [25.25, 67.0], [25.47, 67.53], [26.0, 67.75], [26.25, 67.65], [26.5, 67.75], [26.75, 67.65], [26.82, 67.68], [26.97, 68.03], [27.5, 68.25], [28.03, 68.03], [28.18, 67.68], [28.25, 67.65], [28.5, 67.75], [28.75, 67.65], [29.0, 67.75], [29.53, 67.53], [29.68, 67.18], [30.03, 67.03], [30.18, 66.68], [30.53, 66.53], [30.75, 66.0], [30.53, 65.47], [30.18, 65.32], [30.03, 64.97], [29.68, 64.82], [29.53, 64.47], [29.18, 64.32], [29.03, 63.97], [28.68, 63.82], [28.53, 63.47], [28.18, 63.32], [28.03, 62.97], [27.5, 62.75], [27.25, 62.85], [27.0, 62.75], [26.75, 62.85], [26.5, 62.75], [25.97, 62.97], [25.82, 63.32], [25.75, 63.35], [25.5, 63.25], [25.25, 63.35], [25.0, 63.25], [24.47, 63.47], [24.32, 63.82], [23.97, 63.97], [23.75, 64.5]], [[26.88, 65.8], [26.75, 65.85], [26.68, 65.82], [26.63, 65.7], [26.75, 65.65], [26.82, 65.68], [26.88, 65.8]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.121701967114291}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.477723462249333}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.023237202212215, 6.782547084848829, 7.986888202836553]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [5.646029242039049, 4.577134605748768, 6.1037396997807605]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.697406973493468, -5.968985288773378, -4.766778124481144]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.121701967114291, -6.93085764716858, -5.462039160106997]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4665863211905354, -1.6169802889540086, -1.3804484476659764]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0134041830220326, -1.800766481456974, -1.5294966804235643]}}