{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:54:15.423434", "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-12_to_2025-Jan-16_315.0_-9.0"}, "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": 2025010000339}, "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 12 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 16 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 79271.33002108298}, "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": ["Brazil"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.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": -9.0}, "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": 315.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "315.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 313.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 316.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -11.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -7.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-01-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.25, -10.5], [-45.03, -9.97], [-44.5, -9.75], [-43.97, -9.97], [-43.8, -10.38], [-43.5, -10.25], [-42.97, -10.47], [-42.75, -11.0], [-42.97, -11.53], [-43.5, -11.75], [-44.03, -11.53], [-44.2, -11.12], [-44.5, -11.25], [-45.03, -11.03], [-45.25, -10.5]]], [[[-45.0, -7.75], [-44.47, -7.97], [-44.25, -8.5], [-44.35, -8.75], [-44.25, -9.0], [-44.47, -9.53], [-45.0, -9.75], [-45.53, -9.53], [-45.75, -9.0], [-45.65, -8.75], [-45.75, -8.5], [-45.53, -7.97], [-45.0, -7.75]]]]}, "2025-01-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.25, -10.5], [-45.03, -9.97], [-44.5, -9.75], [-43.97, -9.97], [-43.8, -10.38], [-43.5, -10.25], [-42.97, -10.47], [-42.75, -11.0], [-42.97, -11.53], [-43.5, -11.75], [-44.03, -11.53], [-44.2, -11.12], [-44.5, -11.25], [-45.03, -11.03], [-45.25, -10.5]]], [[[-45.5, -7.75], [-45.25, -7.85], [-45.0, -7.75], [-44.47, -7.97], [-44.25, -8.5], [-44.35, -8.75], [-44.25, -9.0], [-44.47, -9.53], [-45.0, -9.75], [-45.25, -9.65], [-45.5, -9.75], [-46.03, -9.53], [-46.25, -9.0], [-46.15, -8.75], [-46.25, -8.5], [-46.03, -7.97], [-45.5, -7.75]]]]}, "2025-01-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-46.53, -7.47], [-46.0, -7.25], [-45.75, -7.35], [-45.5, -7.25], [-45.25, -7.35], [-45.0, -7.25], [-44.75, -7.35], [-44.5, -7.25], [-43.97, -7.47], [-43.75, -8.0], [-43.85, -8.25], [-43.82, -8.32], [-43.47, -8.47], [-43.25, -9.0], [-43.35, -9.25], [-43.32, -9.32], [-42.97, -9.47], [-42.75, -10.0], [-42.85, -10.25], [-42.75, -10.5], [-42.85, -10.75], [-42.75, -11.0], [-42.85, -11.25], [-42.75, -11.5], [-42.97, -12.03], [-43.5, -12.25], [-44.03, -12.03], [-44.2, -11.62], [-44.5, -11.75], [-45.03, -11.53], [-45.18, -11.18], [-45.53, -11.03], [-45.75, -10.5], [-45.65, -10.25], [-45.68, -10.18], [-46.03, -10.03], [-46.25, -9.5], [-46.15, -9.25], [-46.18, -9.18], [-46.53, -9.03], [-46.75, -8.5], [-46.65, -8.25], [-46.75, -8.0], [-46.53, -7.47]]]]}, "2025-01-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-46.53, -7.47], [-46.0, -7.25], [-45.75, -7.35], [-45.5, -7.25], [-45.25, -7.35], [-45.0, -7.25], [-44.75, -7.35], [-44.5, -7.25], [-43.97, -7.47], [-43.75, -8.0], [-43.85, -8.25], [-43.82, -8.32], [-43.47, -8.47], [-43.25, -9.0], [-43.35, -9.25], [-43.32, -9.32], [-42.97, -9.47], [-42.75, -10.0], [-42.85, -10.25], [-42.75, -10.5], [-42.85, -10.75], [-42.75, -11.0], [-42.85, -11.25], [-42.75, -11.5], [-42.97, -12.03], [-43.5, -12.25], [-44.03, -12.03], [-44.2, -11.62], [-44.5, -11.75], [-45.03, -11.53], [-45.18, -11.18], [-45.53, -11.03], [-45.75, -10.5], [-45.65, -10.25], [-45.68, -10.18], [-46.03, -10.03], [-46.25, -9.5], [-46.15, -9.25], [-46.18, -9.18], [-46.53, -9.03], [-46.75, -8.5], [-46.65, -8.25], [-46.75, -8.0], [-46.53, -7.47]]]]}, "2025-01-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-46.53, -7.47], [-46.0, -7.25], [-45.75, -7.35], [-45.5, -7.25], [-45.25, -7.35], [-45.0, -7.25], [-44.75, -7.35], [-44.5, -7.25], [-43.97, -7.47], [-43.75, -8.0], [-43.85, -8.25], [-43.82, -8.32], [-43.47, -8.47], [-43.25, -9.0], [-43.35, -9.25], [-43.32, -9.32], [-42.97, -9.47], [-42.75, -10.0], [-42.85, -10.25], [-42.75, -10.5], [-42.85, -10.75], [-42.75, -11.0], [-42.85, -11.25], [-42.75, -11.5], [-42.97, -12.03], [-43.5, -12.25], [-44.03, -12.03], [-44.2, -11.62], [-44.5, -11.75], [-45.03, -11.53], [-45.18, -11.18], [-45.53, -11.03], [-45.75, -10.5], [-45.65, -10.25], [-45.68, -10.18], [-46.03, -10.03], [-46.25, -9.5], [-46.15, -9.25], [-46.18, -9.18], [-46.53, -9.03], [-46.75, -8.5], [-46.65, -8.25], [-46.75, -8.0], [-46.53, -7.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.3817813409415862}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.2807886422038437}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.618049875895167, 23.744067128499353, 23.34136518820742, 23.354752330290978, 23.339854959341267]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.39785537719729, 23.348396555582724, 22.504354095459007, 22.41724294026693, 22.742940521240257]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.158747604459194, -1.8873856237826014, -2.3434186182042582, -2.3126044199776024, -2.2959037446414423]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.900272082305605, -2.455239596115746, -2.713116690618449, -3.3817813409415862, -3.0865823765789173]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4390714046011701, -1.33464487610702, -1.667259785079994, -1.5904286786533273, -1.6094063313372837]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6452737805002662, -1.4666204086880543, -2.1149243206217383, -1.820110908487039, -2.158486203347971]}}