{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:23:11.032180", "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": "2021-Feb-06_to_2021-Feb-10_312.5_-13.5"}, "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": 2021020000284}, "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": "February 06 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 10 2021"}, "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": 60139.070583096065}, "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": -13.5}, "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": 312.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "312.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 311.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 313.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -15.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -11.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-02-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.15, -12.25], [-49.25, -12.0], [-49.03, -11.47], [-48.5, -11.25], [-47.97, -11.47], [-47.82, -11.82], [-47.75, -11.85], [-47.5, -11.75], [-47.25, -11.85], [-47.0, -11.75], [-46.47, -11.97], [-46.32, -12.32], [-45.97, -12.47], [-45.75, -13.0], [-45.85, -13.25], [-45.75, -13.5], [-45.97, -14.03], [-46.5, -14.25], [-47.03, -14.03], [-47.18, -13.68], [-47.25, -13.65], [-47.5, -13.75], [-47.75, -13.65], [-48.0, -13.75], [-48.25, -13.65], [-48.5, -13.75], [-49.03, -13.53], [-49.25, -13.0], [-49.15, -12.75], [-49.25, -12.5], [-49.15, -12.25]]]]}, "2021-02-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.15, -12.25], [-49.25, -12.0], [-49.03, -11.47], [-48.5, -11.25], [-47.97, -11.47], [-47.82, -11.82], [-47.75, -11.85], [-47.5, -11.75], [-47.25, -11.85], [-47.0, -11.75], [-46.47, -11.97], [-46.32, -12.32], [-45.97, -12.47], [-45.75, -13.0], [-45.85, -13.25], [-45.75, -13.5], [-45.97, -14.03], [-46.32, -14.18], [-46.47, -14.53], [-46.82, -14.68], [-46.97, -15.03], [-47.32, -15.18], [-47.47, -15.53], [-48.0, -15.75], [-48.53, -15.53], [-48.75, -15.0], [-48.65, -14.75], [-48.68, -14.68], [-49.03, -14.53], [-49.25, -14.0], [-49.04, -13.5], [-49.25, -13.0], [-49.15, -12.75], [-49.25, -12.5], [-49.15, -12.25]]]]}, "2021-02-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.15, -12.25], [-49.25, -12.0], [-49.03, -11.47], [-48.5, -11.25], [-47.97, -11.47], [-47.82, -11.82], [-47.75, -11.85], [-47.5, -11.75], [-47.25, -11.85], [-47.0, -11.75], [-46.47, -11.97], [-46.32, -12.32], [-45.97, -12.47], [-45.75, -13.0], [-45.85, -13.25], [-45.75, -13.5], [-45.97, -14.03], [-46.32, -14.18], [-46.47, -14.53], [-46.82, -14.68], [-46.97, -15.03], [-47.32, -15.18], [-47.47, -15.53], [-48.0, -15.75], [-48.53, -15.53], [-48.75, -15.0], [-48.65, -14.75], [-48.68, -14.68], [-49.03, -14.53], [-49.25, -14.0], [-49.04, -13.5], [-49.25, -13.0], [-49.15, -12.75], [-49.25, -12.5], [-49.15, -12.25]]]]}, "2021-02-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.25, -14.0], [-49.03, -13.47], [-48.68, -13.32], [-48.53, -12.97], [-48.0, -12.75], [-47.75, -12.85], [-47.5, -12.75], [-46.97, -12.97], [-46.82, -13.32], [-46.47, -13.47], [-46.25, -14.0], [-46.47, -14.53], [-46.82, -14.68], [-46.97, -15.03], [-47.32, -15.18], [-47.47, -15.53], [-48.0, -15.75], [-48.53, -15.53], [-48.75, -15.0], [-48.65, -14.75], [-48.68, -14.68], [-49.03, -14.53], [-49.25, -14.0]]]]}, "2021-02-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.03, -12.97], [-47.5, -12.75], [-46.97, -12.97], [-46.75, -13.5], [-46.85, -13.75], [-46.75, -14.0], [-46.97, -14.53], [-47.5, -14.75], [-48.03, -14.53], [-48.25, -14.0], [-48.15, -13.75], [-48.25, -13.5], [-48.03, -12.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.5873207597625765}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.6184433054168523}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.45847955968668, 21.802836125530973, 22.135330446702994, 21.841821223221245, 20.886811581209713]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.33900471775911, 19.4131689118679, 19.114336411663487, 20.133288830138497, 20.42753923200661]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.1607100162137014, -3.0832581327105033, -2.7026179867291376, -2.116036107231303, -1.906913701809799]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.522253027034992, -3.5873207597625765, -3.4266188854851976, -2.2544555623460383, -2.027574962805204]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4317012290868893, -2.0160707996765685, -1.7720506427289997, -1.3841617645735642, -1.2825612268351132]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7126704282752567, -2.3860790657917006, -2.127220797813426, -1.4821647467399934, -1.3548194951369719]}}