{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:17:48.467445", "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": "2018-Aug-30_to_2018-Sep-01_318.5_-10.0"}, "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": 2018080001151}, "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": "August 30 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 01 2018"}, "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": 130392.61674836041}, "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": -10.0}, "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": 318.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "318.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 315.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 320.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -13.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -8.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-08-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.03, -9.97], [-44.5, -9.75], [-44.25, -9.85], [-44.0, -9.75], [-43.75, -9.85], [-43.5, -9.75], [-43.25, -9.85], [-43.18, -9.82], [-43.15, -9.75], [-43.25, -9.5], [-43.15, -9.25], [-43.25, -9.0], [-43.03, -8.47], [-42.68, -8.32], [-42.53, -7.97], [-42.0, -7.75], [-41.47, -7.97], [-41.25, -8.5], [-41.35, -8.75], [-41.25, -9.0], [-41.35, -9.25], [-41.32, -9.32], [-40.97, -9.47], [-40.82, -9.82], [-40.47, -9.97], [-40.25, -10.5], [-40.35, -10.75], [-40.25, -11.0], [-40.47, -11.53], [-40.82, -11.68], [-40.85, -11.75], [-40.82, -11.82], [-40.75, -11.85], [-40.5, -11.75], [-40.25, -11.85], [-40.0, -11.75], [-39.47, -11.97], [-39.25, -12.5], [-39.35, -12.75], [-39.25, -13.0], [-39.47, -13.53], [-40.0, -13.75], [-40.5, -13.54], [-41.0, -13.75], [-41.5, -13.54], [-42.0, -13.75], [-42.53, -13.53], [-42.68, -13.18], [-43.03, -13.03], [-43.18, -12.68], [-43.25, -12.65], [-43.5, -12.75], [-43.75, -12.65], [-44.0, -12.75], [-44.53, -12.53], [-44.75, -12.0], [-44.62, -11.7], [-45.03, -11.53], [-45.25, -11.0], [-45.15, -10.75], [-45.25, -10.5], [-45.03, -9.97]]]]}, "2018-08-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.03, -9.97], [-44.5, -9.75], [-44.25, -9.85], [-44.0, -9.75], [-43.75, -9.85], [-43.5, -9.75], [-43.25, -9.85], [-43.18, -9.82], [-43.15, -9.75], [-43.25, -9.5], [-43.15, -9.25], [-43.25, -9.0], [-43.03, -8.47], [-42.68, -8.32], [-42.53, -7.97], [-42.0, -7.75], [-41.47, -7.97], [-41.25, -8.5], [-41.35, -8.75], [-41.25, -9.0], [-41.35, -9.25], [-41.32, -9.32], [-40.97, -9.47], [-40.82, -9.82], [-40.47, -9.97], [-40.25, -10.5], [-40.35, -10.75], [-40.25, -11.0], [-40.47, -11.53], [-40.82, -11.68], [-40.85, -11.75], [-40.82, -11.82], [-40.75, -11.85], [-40.5, -11.75], [-40.25, -11.85], [-40.0, -11.75], [-39.47, -11.97], [-39.25, -12.5], [-39.35, -12.75], [-39.25, -13.0], [-39.47, -13.53], [-40.0, -13.75], [-40.5, -13.54], [-41.0, -13.75], [-41.5, -13.54], [-42.0, -13.75], [-42.53, -13.53], [-42.68, -13.18], [-43.03, -13.03], [-43.18, -12.68], [-43.25, -12.65], [-43.5, -12.75], [-43.75, -12.65], [-44.0, -12.75], [-44.53, -12.53], [-44.75, -12.0], [-44.62, -11.7], [-45.03, -11.53], [-45.25, -11.0], [-45.15, -10.75], [-45.25, -10.5], [-45.03, -9.97]]]]}, "2018-09-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.03, -9.97], [-44.5, -9.75], [-44.25, -9.85], [-44.0, -9.75], [-43.75, -9.85], [-43.5, -9.75], [-43.25, -9.85], [-43.18, -9.82], [-43.15, -9.75], [-43.25, -9.5], [-43.15, -9.25], [-43.25, -9.0], [-43.03, -8.47], [-42.68, -8.32], [-42.53, -7.97], [-42.0, -7.75], [-41.47, -7.97], [-41.25, -8.5], [-41.35, -8.75], [-41.25, -9.0], [-41.35, -9.25], [-41.32, -9.32], [-40.97, -9.47], [-40.82, -9.82], [-40.47, -9.97], [-40.25, -10.5], [-40.35, -10.75], [-40.25, -11.0], [-40.47, -11.53], [-40.82, -11.68], [-40.85, -11.75], [-40.82, -11.82], [-40.75, -11.85], [-40.5, -11.75], [-40.25, -11.85], [-40.0, -11.75], [-39.47, -11.97], [-39.25, -12.5], [-39.35, -12.75], [-39.25, -13.0], [-39.47, -13.53], [-40.0, -13.75], [-40.5, -13.54], [-41.0, -13.75], [-41.5, -13.54], [-42.0, -13.75], [-42.53, -13.53], [-42.68, -13.18], [-43.03, -13.03], [-43.18, -12.68], [-43.25, -12.65], [-43.5, -12.75], [-43.75, -12.65], [-44.0, -12.75], [-44.53, -12.53], [-44.75, -12.0], [-44.62, -11.7], [-45.03, -11.53], [-45.25, -11.0], [-45.15, -10.75], [-45.25, -10.5], [-45.03, -9.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.636108139467069}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.7794443038658516}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.246011193475113, 22.863777496793773, 23.101708390649605]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.095047802344254, 17.17702896274716, 17.901958337486292]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5608630900229772, -1.992773855452862, -1.7846959661217157]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.9803442739543016, -2.636108139467069, -2.252653403759439]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4959868963493392, -1.8604722478489835, -1.5752523943011794]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.889700230565112, -2.2133810338747124, -2.1236835433591765]}}