{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:54:17.950556", "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": "2025-Jan-24_to_2025-Jan-26_292.0_5.5"}, "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": 2025010000631}, "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": "January 24 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 26 2025"}, "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": 95527.45654903792}, "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": ["Colombia", "Venezuela"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["South 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": 5.5}, "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": 292.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "292.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 289.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 293.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 2.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 6.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-01-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.53, 5.53], [-70.18, 5.68], [-70.15, 5.75], [-70.25, 6.0], [-70.03, 6.53], [-69.5, 6.75], [-68.97, 6.53], [-68.82, 6.18], [-68.75, 6.15], [-68.5, 6.25], [-68.25, 6.15], [-68.0, 6.25], [-67.75, 6.15], [-67.5, 6.25], [-67.25, 6.15], [-67.0, 6.25], [-66.47, 6.03], [-66.25, 5.5], [-66.47, 4.97], [-67.0, 4.75], [-66.75, 4.65], [-66.5, 4.75], [-65.97, 4.53], [-65.75, 4.0], [-65.97, 3.47], [-66.5, 3.25], [-66.75, 3.35], [-66.82, 3.32], [-66.97, 2.97], [-67.5, 2.75], [-67.8, 2.88], [-67.97, 2.47], [-68.32, 2.32], [-68.47, 1.97], [-69.0, 1.75], [-69.53, 1.97], [-69.68, 2.32], [-70.03, 2.47], [-70.25, 3.0], [-70.15, 3.25], [-70.25, 3.5], [-70.15, 3.75], [-70.18, 3.82], [-70.53, 3.97], [-70.75, 4.5], [-70.65, 4.75], [-70.75, 5.0], [-70.53, 5.53]], [[-67.25, 4.85], [-67.32, 4.82], [-67.35, 4.75], [-67.32, 4.68], [-67.25, 4.65], [-67.0, 4.75], [-67.25, 4.85]]]]}, "2025-01-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.53, 5.53], [-70.18, 5.68], [-70.15, 5.75], [-70.25, 6.0], [-70.03, 6.53], [-69.5, 6.75], [-68.97, 6.53], [-68.82, 6.18], [-68.75, 6.15], [-68.5, 6.25], [-68.25, 6.15], [-68.0, 6.25], [-67.75, 6.15], [-67.5, 6.25], [-67.25, 6.15], [-67.0, 6.25], [-66.47, 6.03], [-66.25, 5.5], [-66.47, 4.97], [-67.0, 4.75], [-66.75, 4.65], [-66.5, 4.75], [-65.97, 4.53], [-65.75, 4.0], [-65.97, 3.47], [-66.5, 3.25], [-66.75, 3.35], [-66.82, 3.32], [-66.97, 2.97], [-67.5, 2.75], [-67.8, 2.88], [-67.97, 2.47], [-68.32, 2.32], [-68.47, 1.97], [-69.0, 1.75], [-69.53, 1.97], [-69.68, 2.32], [-70.03, 2.47], [-70.25, 3.0], [-70.15, 3.25], [-70.25, 3.5], [-70.15, 3.75], [-70.18, 3.82], [-70.53, 3.97], [-70.75, 4.5], [-70.65, 4.75], [-70.75, 5.0], [-70.53, 5.53]], [[-67.25, 4.85], [-67.32, 4.82], [-67.35, 4.75], [-67.32, 4.68], [-67.25, 4.65], [-67.0, 4.75], [-67.25, 4.85]]]]}, "2025-01-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.53, 5.53], [-70.18, 5.68], [-70.15, 5.75], [-70.25, 6.0], [-70.03, 6.53], [-69.5, 6.75], [-68.97, 6.53], [-68.82, 6.18], [-68.75, 6.15], [-68.5, 6.25], [-68.25, 6.15], [-68.0, 6.25], [-67.75, 6.15], [-67.5, 6.25], [-67.25, 6.15], [-67.0, 6.25], [-66.47, 6.03], [-66.25, 5.5], [-66.47, 4.97], [-67.0, 4.75], [-66.75, 4.65], [-66.5, 4.75], [-65.97, 4.53], [-65.75, 4.0], [-65.97, 3.47], [-66.5, 3.25], [-66.75, 3.35], [-66.82, 3.32], [-66.97, 2.97], [-67.5, 2.75], [-67.8, 2.88], [-67.97, 2.47], [-68.32, 2.32], [-68.47, 1.97], [-69.0, 1.75], [-69.53, 1.97], [-69.68, 2.32], [-70.03, 2.47], [-70.25, 3.0], [-70.15, 3.25], [-70.25, 3.5], [-70.15, 3.75], [-70.18, 3.82], [-70.53, 3.97], [-70.75, 4.5], [-70.65, 4.75], [-70.75, 5.0], [-70.53, 5.53]], [[-67.25, 4.85], [-67.32, 4.82], [-67.35, 4.75], [-67.32, 4.68], [-67.25, 4.65], [-67.0, 4.75], [-67.25, 4.85]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.5616525273622983}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.1073049926774536}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.20417692122919, 24.302244461223665, 24.873336143903828]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.852693176269554, 21.6374285380046, 22.64305903116866]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6705287482970943, -2.598306533373113, -2.0530796963621545]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.096031929007495, -3.5616525273622983, -3.0799749696180925]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4700420783299841, -2.2538482284714103, -1.7370714273722512]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.765085115828925, -3.086753625887843, -2.3688990275893524]}}