{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:45:35.541772", "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": "2010-Sep-01_to_2010-Sep-04_320.0_-6.5"}, "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": 2010090000043}, "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": "September 01 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 04 2010"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 122430.9387379686}, "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": -6.5}, "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": 320.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "320.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 314.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 321.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -10.75}, "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": {"2010-09-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-44.68, -9.18], [-45.03, -9.03], [-45.25, -8.5], [-45.03, -7.97], [-44.5, -7.75], [-44.2, -7.88], [-44.03, -7.47], [-43.68, -7.32], [-43.53, -6.97], [-43.0, -6.75], [-42.75, -6.85], [-42.68, -6.82], [-42.65, -6.75], [-42.75, -6.5], [-42.53, -5.97], [-42.0, -5.75], [-41.75, -5.85], [-41.5, -5.75], [-40.97, -5.97], [-40.82, -6.32], [-40.75, -6.35], [-40.68, -6.32], [-40.53, -5.97], [-40.0, -5.75], [-39.75, -5.85], [-39.5, -5.75], [-38.97, -5.97], [-38.82, -6.32], [-38.47, -6.47], [-38.25, -7.0], [-38.35, -7.25], [-38.25, -7.5], [-38.47, -8.03], [-39.0, -8.25], [-39.25, -8.15], [-39.5, -8.25], [-39.75, -8.15], [-39.82, -8.18], [-39.97, -8.53], [-40.5, -8.75], [-40.75, -8.65], [-41.0, -8.75], [-41.25, -8.65], [-41.5, -8.75], [-41.75, -8.65], [-42.0, -8.75], [-42.3, -8.62], [-42.47, -9.03], [-42.82, -9.18], [-42.97, -9.53], [-43.32, -9.68], [-43.47, -10.03], [-43.82, -10.18], [-43.97, -10.53], [-44.5, -10.75], [-45.03, -10.53], [-45.25, -10.0], [-45.03, -9.47], [-44.68, -9.32], [-44.65, -9.25], [-44.68, -9.18]]]]}, "2010-09-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.65, -8.75], [-45.75, -8.5], [-45.65, -8.25], [-45.75, -8.0], [-45.53, -7.47], [-45.0, -7.25], [-44.75, -7.35], [-44.5, -7.25], [-44.0, -7.46], [-43.68, -7.32], [-43.53, -6.97], [-43.0, -6.75], [-42.75, -6.85], [-42.68, -6.82], [-42.65, -6.75], [-42.75, -6.5], [-42.53, -5.97], [-42.0, -5.75], [-41.75, -5.85], [-41.5, -5.75], [-40.97, -5.97], [-40.82, -6.32], [-40.75, -6.35], [-40.68, -6.32], [-40.53, -5.97], [-40.0, -5.75], [-39.75, -5.85], [-39.5, -5.75], [-38.97, -5.97], [-38.82, -6.32], [-38.47, -6.47], [-38.25, -7.0], [-38.35, -7.25], [-38.25, -7.5], [-38.47, -8.03], [-39.0, -8.25], [-39.25, -8.15], [-39.5, -8.25], [-39.75, -8.15], [-39.82, -8.18], [-39.97, -8.53], [-40.5, -8.75], [-40.75, -8.65], [-41.0, -8.75], [-41.25, -8.65], [-41.5, -8.75], [-41.75, -8.65], [-42.0, -8.75], [-42.3, -8.62], [-42.47, -9.03], [-42.82, -9.18], [-42.97, -9.53], [-43.32, -9.68], [-43.35, -9.75], [-43.25, -10.0], [-43.47, -10.53], [-43.82, -10.68], [-43.97, -11.03], [-44.5, -11.25], [-45.03, -11.03], [-45.25, -10.5], [-45.15, -10.25], [-45.18, -10.18], [-45.53, -10.03], [-45.75, -9.5], [-45.65, -9.25], [-45.75, -9.0], [-45.65, -8.75]]]]}, "2010-09-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.65, -8.75], [-45.75, -8.5], [-45.65, -8.25], [-45.75, -8.0], [-45.53, -7.47], [-45.0, -7.25], [-44.75, -7.35], [-44.5, -7.25], [-44.0, -7.46], [-43.68, -7.32], [-43.53, -6.97], [-43.0, -6.75], [-42.75, -6.85], [-42.68, -6.82], [-42.65, -6.75], [-42.75, -6.5], [-42.53, -5.97], [-42.0, -5.75], [-41.75, -5.85], [-41.5, -5.75], [-40.97, -5.97], [-40.82, -6.32], [-40.75, -6.35], [-40.68, -6.32], [-40.53, -5.97], [-40.0, -5.75], [-39.75, -5.85], [-39.5, -5.75], [-38.97, -5.97], [-38.82, -6.32], [-38.47, -6.47], [-38.25, -7.0], [-38.35, -7.25], [-38.25, -7.5], [-38.47, -8.03], [-39.0, -8.25], [-39.25, -8.15], [-39.5, -8.25], [-39.75, -8.15], [-39.82, -8.18], [-39.97, -8.53], [-40.5, -8.75], [-40.75, -8.65], [-41.0, -8.75], [-41.25, -8.65], [-41.5, -8.75], [-41.75, -8.65], [-42.0, -8.75], [-42.3, -8.62], [-42.47, -9.03], [-42.82, -9.18], [-42.97, -9.53], [-43.32, -9.68], [-43.35, -9.75], [-43.25, -10.0], [-43.47, -10.53], [-43.82, -10.68], [-43.97, -11.03], [-44.5, -11.25], [-45.03, -11.03], [-45.25, -10.5], [-45.15, -10.25], [-45.18, -10.18], [-45.53, -10.03], [-45.75, -9.5], [-45.65, -9.25], [-45.75, -9.0], [-45.65, -8.75]]]]}, "2010-09-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.75, -8.5], [-45.65, -8.25], [-45.75, -8.0], [-45.53, -7.47], [-45.0, -7.25], [-44.75, -7.35], [-44.5, -7.25], [-43.97, -7.47], [-43.75, -8.0], [-43.97, -8.53], [-44.32, -8.68], [-44.35, -8.75], [-44.32, -8.82], [-43.97, -8.97], [-43.82, -9.32], [-43.47, -9.47], [-43.25, -10.0], [-43.47, -10.53], [-43.82, -10.68], [-43.97, -11.03], [-44.5, -11.25], [-45.03, -11.03], [-45.25, -10.5], [-45.15, -10.25], [-45.18, -10.18], [-45.53, -10.03], [-45.75, -9.5], [-45.65, -9.25], [-45.75, -9.0], [-45.65, -8.75], [-45.75, -8.5]]], [[[-40.53, -7.03], [-40.75, -6.5], [-40.53, -5.97], [-40.0, -5.75], [-39.47, -5.97], [-39.25, -6.5], [-39.47, -7.03], [-40.0, -7.25], [-40.53, -7.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.4010470972734197}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6642853764956518}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.217879630344896, 26.011105008861932, 26.11453045946081, 26.482295141277916]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.8671578340506, 21.74203941684351, 21.714559034461388, 25.770395756878145]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5061005041202478, -1.7900479039310326, -1.7052362403988455, -1.5036234027426474]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.9344830938160271, -2.4010470972734197, -2.1782838487469576, -1.8212638235908685]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5667834594583003, -1.7843816526473126, -1.6423724008755838, -1.4739588269474533]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8715178436055961, -2.376509856461392, -2.0207670411088925, -1.6646834660277183]}}