{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:47.433346", "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": "2011-Feb-24_to_2011-Mar-03_321.0_-7.0"}, "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": 2011020001169}, "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 24 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 03 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 388971.38243572804}, "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": -7.0}, "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": 321.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "321.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 314.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 323.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -12.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -3.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-02-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-46.03, -12.53], [-46.25, -12.0], [-46.03, -11.47], [-45.5, -11.25], [-45.25, -11.35], [-45.0, -11.25], [-44.75, -11.35], [-44.68, -11.32], [-44.65, -11.25], [-44.75, -11.0], [-44.62, -10.7], [-44.75, -10.65], [-45.0, -10.75], [-45.53, -10.53], [-45.75, -10.0], [-45.53, -9.47], [-45.0, -9.25], [-44.75, -9.35], [-44.5, -9.25], [-43.97, -9.47], [-43.75, -10.0], [-43.87, -10.3], [-43.75, -10.35], [-43.5, -10.25], [-42.97, -10.47], [-42.75, -11.0], [-42.97, -11.53], [-43.32, -11.68], [-43.35, -11.75], [-43.25, -12.0], [-43.47, -12.53], [-44.0, -12.75], [-44.25, -12.65], [-44.5, -12.75], [-44.75, -12.65], [-45.0, -12.75], [-45.25, -12.65], [-45.5, -12.75], [-46.03, -12.53]]]]}, "2011-02-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-46.03, -12.53], [-46.25, -12.0], [-46.03, -11.47], [-45.5, -11.25], [-45.25, -11.35], [-45.0, -11.25], [-44.75, -11.35], [-44.68, -11.32], [-44.65, -11.25], [-44.75, -11.0], [-44.62, -10.7], [-44.75, -10.65], [-45.0, -10.75], [-45.53, -10.53], [-45.75, -10.0], [-45.53, -9.47], [-45.0, -9.25], [-44.75, -9.35], [-44.5, -9.25], [-43.97, -9.47], [-43.75, -10.0], [-43.87, -10.3], [-43.75, -10.35], [-43.5, -10.25], [-43.2, -10.38], [-43.03, -9.97], [-42.5, -9.75], [-42.25, -9.85], [-42.0, -9.75], [-41.75, -9.85], [-41.68, -9.82], [-41.53, -9.47], [-41.18, -9.32], [-41.03, -8.97], [-40.5, -8.75], [-40.25, -8.85], [-40.12, -8.8], [-40.25, -8.5], [-40.15, -8.25], [-40.18, -8.18], [-40.53, -8.03], [-40.75, -7.5], [-40.65, -7.25], [-40.68, -7.18], [-40.75, -7.15], [-41.0, -7.25], [-41.53, -7.03], [-41.75, -6.5], [-41.65, -6.25], [-41.75, -6.0], [-41.62, -5.7], [-42.03, -5.53], [-42.25, -5.0], [-42.03, -4.47], [-41.68, -4.32], [-41.53, -3.97], [-41.0, -3.75], [-40.5, -3.96], [-40.0, -3.75], [-39.75, -3.85], [-39.5, -3.75], [-38.97, -3.97], [-38.82, -4.32], [-38.47, -4.47], [-38.25, -5.0], [-38.46, -5.5], [-38.25, -6.0], [-38.35, -6.25], [-38.25, -6.5], [-38.35, -6.75], [-38.25, -7.0], [-38.35, -7.25], [-38.25, -7.5], [-38.35, -7.75], [-38.25, -8.0], [-38.47, -8.53], [-38.82, -8.68], [-38.97, -9.03], [-39.37, -9.2], [-39.25, -9.5], [-39.47, -10.03], [-39.82, -10.18], [-39.97, -10.53], [-40.5, -10.75], [-40.75, -10.65], [-40.82, -10.68], [-40.97, -11.03], [-41.5, -11.25], [-41.75, -11.15], [-42.0, -11.25], [-42.25, -11.15], [-42.5, -11.25], [-42.8, -11.12], [-42.97, -11.53], [-43.32, -11.68], [-43.35, -11.75], [-43.25, -12.0], [-43.47, -12.53], [-44.0, -12.75], [-44.25, -12.65], [-44.5, -12.75], [-44.75, -12.65], [-45.0, -12.75], [-45.25, -12.65], [-45.5, -12.75], [-46.03, -12.53]], [[-39.85, -5.25], [-39.82, -5.32], [-39.75, -5.35], [-39.62, -5.3], [-39.68, -5.18], [-39.75, -5.15], [-39.82, -5.18], [-39.85, -5.25]]]]}, "2011-02-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-46.03, -12.53], [-46.25, -12.0], [-46.03, -11.47], [-45.5, -11.25], [-45.25, -11.35], [-45.0, -11.25], [-44.75, -11.35], [-44.68, -11.32], [-44.65, -11.25], [-44.75, -11.0], [-44.62, -10.7], [-44.75, -10.65], [-45.0, -10.75], [-45.53, -10.53], [-45.75, -10.0], [-45.53, -9.47], [-45.0, -9.25], [-44.75, -9.35], [-44.5, -9.25], [-43.97, -9.47], [-43.75, -10.0], [-43.87, -10.3], [-43.75, -10.35], [-43.68, -10.32], [-43.53, -9.97], [-43.0, -9.75], [-42.75, -9.85], [-42.5, -9.75], [-42.25, -9.85], [-42.0, -9.75], [-41.75, -9.85], [-41.68, -9.82], [-41.53, -9.47], [-41.18, -9.32], [-41.03, -8.97], [-40.5, -8.75], [-40.25, -8.85], [-40.12, -8.8], [-40.25, -8.5], [-40.15, -8.25], [-40.18, -8.18], [-40.53, -8.03], [-40.75, -7.5], [-40.65, -7.25], [-40.68, -7.18], [-40.75, -7.15], [-41.0, -7.25], [-41.53, -7.03], [-41.75, -6.5], [-41.65, -6.25], [-41.75, -6.0], [-41.62, -5.7], [-42.03, -5.53], [-42.25, -5.0], [-42.03, -4.47], [-41.68, -4.32], [-41.53, -3.97], [-41.0, -3.75], [-40.5, -3.96], [-40.0, -3.75], [-39.75, -3.85], [-39.5, -3.75], [-39.25, -3.85], [-39.0, -3.75], [-38.75, -3.85], [-38.5, -3.75], [-37.97, -3.97], [-37.75, -4.5], [-37.85, -4.75], [-37.75, -5.0], [-37.96, -5.5], [-37.82, -5.82], [-37.75, -5.85], [-37.5, -5.75], [-36.97, -5.97], [-36.75, -6.5], [-36.85, -6.75], [-36.75, -7.0], [-36.97, -7.53], [-37.32, -7.68], [-37.47, -8.03], [-38.0, -8.25], [-38.25, -8.15], [-38.32, -8.18], [-38.47, -8.53], [-38.82, -8.68], [-38.97, -9.03], [-39.37, -9.2], [-39.25, -9.5], [-39.47, -10.03], [-39.82, -10.18], [-39.97, -10.53], [-40.5, -10.75], [-40.75, -10.65], [-40.82, -10.68], [-40.97, -11.03], [-41.32, -11.18], [-41.47, -11.53], [-42.0, -11.75], [-42.25, -11.65], [-42.32, -11.68], [-42.47, -12.03], [-43.0, -12.25], [-43.3, -12.12], [-43.47, -12.53], [-44.0, -12.75], [-44.25, -12.65], [-44.5, -12.75], [-44.75, -12.65], [-45.0, -12.75], [-45.25, -12.65], [-45.5, -12.75], [-46.03, -12.53]]]]}, "2011-02-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-46.03, -12.53], [-46.25, -12.0], [-46.03, -11.47], [-45.5, -11.25], [-45.25, -11.35], [-45.0, -11.25], [-44.75, -11.35], [-44.68, -11.32], [-44.65, -11.25], [-44.75, -11.0], [-44.62, -10.7], [-44.75, -10.65], [-45.0, -10.75], [-45.53, -10.53], [-45.75, -10.0], [-45.53, -9.47], [-45.0, -9.25], [-44.75, -9.35], [-44.5, -9.25], [-44.25, -9.35], [-44.18, -9.32], [-44.03, -8.97], [-43.5, -8.75], [-43.2, -8.88], [-43.03, -8.47], [-42.5, -8.25], [-42.25, -8.35], [-42.18, -8.32], [-42.15, -8.25], [-42.25, -8.0], [-42.03, -7.47], [-41.68, -7.32], [-41.65, -7.25], [-41.75, -7.0], [-41.65, -6.75], [-41.75, -6.5], [-41.65, -6.25], [-41.75, -6.0], [-41.62, -5.7], [-42.03, -5.53], [-42.25, -5.0], [-42.03, -4.47], [-41.68, -4.32], [-41.53, -3.97], [-41.0, -3.75], [-40.5, -3.96], [-40.0, -3.75], [-39.75, -3.85], [-39.5, -3.75], [-39.25, -3.85], [-39.0, -3.75], [-38.75, -3.85], [-38.5, -3.75], [-37.97, -3.97], [-37.75, -4.5], [-37.85, -4.75], [-37.75, -5.0], [-37.96, -5.5], [-37.82, -5.82], [-37.75, -5.85], [-37.5, -5.75], [-36.97, -5.97], [-36.75, -6.5], [-36.85, -6.75], [-36.75, -7.0], [-36.93, -7.43], [-36.5, -7.25], [-35.97, -7.47], [-35.75, -8.0], [-35.97, -8.53], [-36.5, -8.75], [-37.0, -8.54], [-37.5, -8.75], [-37.75, -8.65], [-38.0, -8.75], [-38.25, -8.65], [-38.5, -8.75], [-38.75, -8.65], [-38.82, -8.68], [-38.97, -9.03], [-39.37, -9.2], [-39.25, -9.5], [-39.47, -10.03], [-39.82, -10.18], [-39.97, -10.53], [-40.5, -10.75], [-40.75, -10.65], [-40.82, -10.68], [-40.97, -11.03], [-41.32, -11.18], [-41.47, -11.53], [-42.0, -11.75], [-42.25, -11.65], [-42.32, -11.68], [-42.47, -12.03], [-43.0, -12.25], [-43.3, -12.12], [-43.47, -12.53], [-44.0, -12.75], [-44.25, -12.65], [-44.5, -12.75], [-44.75, -12.65], [-45.0, -12.75], [-45.25, -12.65], [-45.5, -12.75], [-46.03, -12.53]]]]}, "2011-02-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-43.5, -8.75], [-43.2, -8.88], [-43.03, -8.47], [-42.5, -8.25], [-42.25, -8.35], [-42.18, -8.32], [-42.15, -8.25], [-42.25, -8.0], [-42.03, -7.47], [-41.68, -7.32], [-41.65, -7.25], [-41.75, -7.0], [-41.65, -6.75], [-41.68, -6.68], [-42.03, -6.53], [-42.18, -6.18], [-42.53, -6.03], [-42.75, -5.5], [-42.65, -5.25], [-42.75, -5.0], [-42.54, -4.5], [-42.75, -4.0], [-42.53, -3.47], [-42.18, -3.32], [-42.03, -2.97], [-41.5, -2.75], [-40.97, -2.97], [-40.82, -3.32], [-40.5, -3.46], [-40.0, -3.25], [-39.75, -3.35], [-39.5, -3.25], [-39.25, -3.35], [-39.0, -3.25], [-38.47, -3.47], [-38.32, -3.82], [-37.97, -3.97], [-37.82, -4.32], [-37.47, -4.47], [-37.32, -4.82], [-37.0, -4.96], [-36.5, -4.75], [-35.97, -4.97], [-35.75, -5.5], [-35.85, -5.75], [-35.75, -6.0], [-35.97, -6.53], [-36.32, -6.68], [-36.35, -6.75], [-36.25, -7.0], [-36.35, -7.25], [-36.32, -7.32], [-35.97, -7.47], [-35.75, -8.0], [-35.97, -8.53], [-36.5, -8.75], [-36.75, -8.65], [-36.82, -8.68], [-36.97, -9.03], [-37.5, -9.25], [-37.75, -9.15], [-38.0, -9.25], [-38.25, -9.15], [-38.32, -9.18], [-38.47, -9.53], [-39.0, -9.75], [-39.25, -9.65], [-39.32, -9.68], [-39.47, -10.03], [-39.82, -10.18], [-39.97, -10.53], [-40.5, -10.75], [-40.75, -10.65], [-40.82, -10.68], [-40.97, -11.03], [-41.32, -11.18], [-41.47, -11.53], [-42.0, -11.75], [-42.25, -11.65], [-42.32, -11.68], [-42.47, -12.03], [-43.0, -12.25], [-43.53, -12.03], [-43.75, -11.5], [-43.65, -11.25], [-43.75, -11.0], [-43.65, -10.75], [-43.68, -10.68], [-43.75, -10.65], [-44.0, -10.75], [-44.53, -10.53], [-44.75, -10.0], [-44.53, -9.47], [-44.18, -9.32], [-44.03, -8.97], [-43.5, -8.75]]]]}, "2011-03-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-43.5, -8.75], [-43.2, -8.88], [-43.03, -8.47], [-42.5, -8.25], [-42.25, -8.35], [-42.18, -8.32], [-42.15, -8.25], [-42.25, -8.0], [-42.03, -7.47], [-41.68, -7.32], [-41.65, -7.25], [-41.75, -7.0], [-41.65, -6.75], [-41.68, -6.68], [-42.03, -6.53], [-42.18, -6.18], [-42.53, -6.03], [-42.75, -5.5], [-42.65, -5.25], [-42.75, -5.0], [-42.54, -4.5], [-42.75, -4.0], [-42.53, -3.47], [-42.18, -3.32], [-42.03, -2.97], [-41.5, -2.75], [-40.97, -2.97], [-40.82, -3.32], [-40.5, -3.46], [-40.0, -3.25], [-39.75, -3.35], [-39.5, -3.25], [-39.25, -3.35], [-39.0, -3.25], [-38.47, -3.47], [-38.32, -3.82], [-37.97, -3.97], [-37.82, -4.32], [-37.47, -4.47], [-37.32, -4.82], [-37.0, -4.96], [-36.5, -4.75], [-35.97, -4.97], [-35.75, -5.5], [-35.85, -5.75], [-35.75, -6.0], [-35.97, -6.53], [-36.32, -6.68], [-36.35, -6.75], [-36.25, -7.0], [-36.35, -7.25], [-36.32, -7.32], [-35.97, -7.47], [-35.75, -8.0], [-35.97, -8.53], [-36.5, -8.75], [-36.75, -8.65], [-36.82, -8.68], [-36.97, -9.03], [-37.5, -9.25], [-37.75, -9.15], [-38.0, -9.25], [-38.25, -9.15], [-38.32, -9.18], [-38.47, -9.53], [-39.0, -9.75], [-39.25, -9.65], [-39.32, -9.68], [-39.47, -10.03], [-40.0, -10.25], [-40.25, -10.15], [-40.5, -10.25], [-40.8, -10.12], [-40.97, -10.53], [-41.32, -10.68], [-41.47, -11.03], [-42.0, -11.25], [-42.25, -11.15], [-42.5, -11.25], [-43.03, -11.03], [-43.2, -10.62], [-43.5, -10.75], [-43.75, -10.65], [-44.0, -10.75], [-44.53, -10.53], [-44.75, -10.0], [-44.53, -9.47], [-44.18, -9.32], [-44.03, -8.97], [-43.5, -8.75]]]]}, "2011-03-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-42.54, -4.5], [-42.75, -4.0], [-42.53, -3.47], [-42.18, -3.32], [-42.03, -2.97], [-41.5, -2.75], [-40.97, -2.97], [-40.82, -3.32], [-40.5, -3.46], [-40.0, -3.25], [-39.75, -3.35], [-39.5, -3.25], [-39.25, -3.35], [-39.0, -3.25], [-38.47, -3.47], [-38.25, -4.0], [-38.35, -4.25], [-38.3, -4.38], [-38.0, -4.25], [-37.47, -4.47], [-37.32, -4.82], [-37.0, -4.96], [-36.5, -4.75], [-35.97, -4.97], [-35.75, -5.5], [-35.85, -5.75], [-35.75, -6.0], [-35.97, -6.53], [-36.32, -6.68], [-36.35, -6.75], [-36.25, -7.0], [-36.35, -7.25], [-36.25, -7.5], [-36.35, -7.75], [-36.25, -8.0], [-36.47, -8.53], [-36.82, -8.68], [-36.97, -9.03], [-37.5, -9.25], [-37.75, -9.15], [-38.0, -9.25], [-38.25, -9.15], [-38.32, -9.18], [-38.47, -9.53], [-39.0, -9.75], [-39.25, -9.65], [-39.5, -9.75], [-40.0, -9.54], [-40.5, -9.75], [-41.03, -9.53], [-41.18, -9.18], [-41.53, -9.03], [-41.68, -8.68], [-42.03, -8.53], [-42.25, -8.0], [-42.03, -7.47], [-41.68, -7.32], [-41.53, -6.97], [-41.18, -6.82], [-41.15, -6.75], [-41.18, -6.68], [-41.25, -6.65], [-41.5, -6.75], [-42.03, -6.53], [-42.18, -6.18], [-42.53, -6.03], [-42.75, -5.5], [-42.65, -5.25], [-42.75, -5.0], [-42.54, -4.5]], [[-39.65, -7.75], [-39.68, -7.68], [-39.75, -7.65], [-40.0, -7.75], [-39.75, -7.85], [-39.68, -7.82], [-39.65, -7.75]], [[-40.25, -7.65], [-40.32, -7.68], [-40.35, -7.75], [-40.3, -7.88], [-40.0, -7.75], [-40.25, -7.65]]]]}, "2011-03-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-40.53, -6.03], [-40.75, -5.5], [-40.53, -4.97], [-40.0, -4.75], [-39.47, -4.97], [-39.3, -5.38], [-39.0, -5.25], [-38.75, -5.35], [-38.5, -5.25], [-37.97, -5.47], [-37.75, -6.0], [-37.85, -6.25], [-37.75, -6.5], [-37.85, -6.75], [-37.82, -6.82], [-37.47, -6.97], [-37.25, -7.5], [-37.47, -8.03], [-38.0, -8.25], [-38.25, -8.15], [-38.5, -8.25], [-39.03, -8.03], [-39.18, -7.68], [-39.25, -7.65], [-39.5, -7.75], [-39.75, -7.65], [-40.0, -7.75], [-40.53, -7.53], [-40.75, -7.0], [-40.53, -6.47], [-40.18, -6.32], [-40.12, -6.2], [-40.53, -6.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.578065420551809}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.4940939227755656}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.649550223244717, 24.329966185241744, 24.355100558150866, 24.38550120653349, 23.59658202013702, 24.11951494207034, 24.95984456157106, 24.902296604838455]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.082834662056428, 22.210992642158374, 22.39218600395975, 22.059965596974735, 21.061740679261675, 21.68566571470933, 22.844531955167724, 23.762884230106806]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.386911941379645, -1.9373054587728593, -2.2171870860700333, -2.185689760402404, -3.2398069278071433, -2.7396545869831446, -2.0115769822258507, -1.888726091645618]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.7459626558122068, -3.4002536885537893, -3.4616906016114513, -3.2051179327772843, -4.578065420551809, -4.066657227235794, -3.254730001717803, -2.1985340452607147]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.78834432335337, -1.4269651343148213, -1.5414296056866517, -1.5102779581608572, -2.209341081424061, -1.8428000808782945, -1.2897321708796692, -1.1502188111186025]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9704361096319338, -2.3528650703128138, -2.32721211120093, -2.1684970930404055, -2.9931578688453473, -3.1353678303903405, -1.8734840456869226, -1.269684024815788]}}