{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:54:22.634717", "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": "2013-Sep-10_to_2013-Sep-16_291.5_-47.0"}, "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": 2013090000581}, "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 10 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 16 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 138717.88592061363}, "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": ["Argentina", "Chile"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.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": ["South Atlantic Ocean"]}, "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": -47.0}, "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": 291.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "291.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 287.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 294.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -50.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -45.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-09-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.0, -48.75], [-70.75, -48.85], [-70.68, -48.82], [-70.53, -48.47], [-70.0, -48.25], [-69.7, -48.38], [-69.53, -47.97], [-69.0, -47.75], [-68.47, -47.97], [-68.25, -48.5], [-68.47, -49.03], [-69.0, -49.25], [-69.3, -49.12], [-69.47, -49.53], [-69.82, -49.68], [-69.85, -49.75], [-69.75, -50.0], [-69.97, -50.53], [-70.5, -50.75], [-70.75, -50.65], [-71.0, -50.75], [-71.25, -50.65], [-71.5, -50.75], [-72.03, -50.53], [-72.25, -50.0], [-72.03, -49.47], [-71.68, -49.32], [-71.53, -48.97], [-71.0, -48.75]]]]}, "2013-09-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.75, -49.5], [-72.53, -48.97], [-72.18, -48.82], [-72.12, -48.7], [-72.53, -48.53], [-72.75, -48.0], [-72.53, -47.47], [-72.0, -47.25], [-71.75, -47.35], [-71.68, -47.32], [-71.65, -47.25], [-71.75, -47.0], [-71.53, -46.47], [-71.0, -46.25], [-70.75, -46.35], [-70.68, -46.32], [-70.65, -46.25], [-70.75, -46.0], [-70.53, -45.47], [-70.0, -45.25], [-69.47, -45.47], [-69.32, -45.82], [-69.25, -45.85], [-69.0, -45.75], [-68.75, -45.85], [-68.5, -45.75], [-68.25, -45.85], [-68.0, -45.75], [-67.75, -45.85], [-67.5, -45.75], [-66.97, -45.97], [-66.82, -46.32], [-66.75, -46.35], [-66.5, -46.25], [-65.97, -46.47], [-65.82, -46.82], [-65.75, -46.85], [-65.5, -46.75], [-64.97, -46.97], [-64.75, -47.5], [-64.85, -47.75], [-64.75, -48.0], [-64.97, -48.53], [-65.5, -48.75], [-65.75, -48.65], [-66.0, -48.75], [-66.25, -48.65], [-66.32, -48.68], [-66.47, -49.03], [-67.0, -49.25], [-67.25, -49.15], [-67.5, -49.25], [-67.75, -49.15], [-68.0, -49.25], [-68.25, -49.15], [-68.5, -49.25], [-68.75, -49.15], [-69.0, -49.25], [-69.25, -49.15], [-69.32, -49.18], [-69.47, -49.53], [-69.82, -49.68], [-69.85, -49.75], [-69.75, -50.0], [-69.97, -50.53], [-70.5, -50.75], [-70.75, -50.65], [-70.82, -50.68], [-70.97, -51.03], [-71.5, -51.25], [-72.03, -51.03], [-72.25, -50.5], [-72.15, -50.25], [-72.18, -50.18], [-72.53, -50.03], [-72.75, -49.5]]]]}, "2013-09-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.75, -49.5], [-72.53, -48.97], [-72.18, -48.82], [-72.12, -48.7], [-72.53, -48.53], [-72.75, -48.0], [-72.53, -47.47], [-72.12, -47.3], [-72.25, -47.0], [-72.03, -46.47], [-71.5, -46.25], [-71.25, -46.35], [-71.0, -46.25], [-70.75, -46.35], [-70.68, -46.32], [-70.65, -46.25], [-70.75, -46.0], [-70.53, -45.47], [-70.0, -45.25], [-69.47, -45.47], [-69.32, -45.82], [-69.25, -45.85], [-69.0, -45.75], [-68.75, -45.85], [-68.5, -45.75], [-68.25, -45.85], [-68.0, -45.75], [-67.75, -45.85], [-67.5, -45.75], [-66.97, -45.97], [-66.82, -46.32], [-66.75, -46.35], [-66.5, -46.25], [-65.97, -46.47], [-65.82, -46.82], [-65.75, -46.85], [-65.5, -46.75], [-64.97, -46.97], [-64.75, -47.5], [-64.85, -47.75], [-64.75, -48.0], [-64.97, -48.53], [-65.5, -48.75], [-65.75, -48.65], [-66.0, -48.75], [-66.25, -48.65], [-66.32, -48.68], [-66.47, -49.03], [-67.0, -49.25], [-67.25, -49.15], [-67.5, -49.25], [-67.75, -49.15], [-68.0, -49.25], [-68.25, -49.15], [-68.5, -49.25], [-68.75, -49.15], [-69.0, -49.25], [-69.25, -49.15], [-69.32, -49.18], [-69.47, -49.53], [-69.82, -49.68], [-69.85, -49.75], [-69.75, -50.0], [-69.97, -50.53], [-70.5, -50.75], [-70.75, -50.65], [-70.82, -50.68], [-70.97, -51.03], [-71.5, -51.25], [-72.03, -51.03], [-72.25, -50.5], [-72.15, -50.25], [-72.18, -50.18], [-72.53, -50.03], [-72.75, -49.5]]]]}, "2013-09-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.25, -47.5], [-73.03, -46.97], [-72.5, -46.75], [-72.2, -46.88], [-72.03, -46.47], [-71.5, -46.25], [-71.25, -46.35], [-71.0, -46.25], [-70.75, -46.35], [-70.68, -46.32], [-70.65, -46.25], [-70.75, -46.0], [-70.53, -45.47], [-70.0, -45.25], [-69.47, -45.47], [-69.32, -45.82], [-69.25, -45.85], [-69.0, -45.75], [-68.75, -45.85], [-68.5, -45.75], [-68.25, -45.85], [-68.0, -45.75], [-67.75, -45.85], [-67.5, -45.75], [-66.97, -45.97], [-66.82, -46.32], [-66.75, -46.35], [-66.5, -46.25], [-65.97, -46.47], [-65.82, -46.82], [-65.75, -46.85], [-65.5, -46.75], [-64.97, -46.97], [-64.75, -47.5], [-64.85, -47.75], [-64.75, -48.0], [-64.97, -48.53], [-65.5, -48.75], [-65.75, -48.65], [-66.0, -48.75], [-66.25, -48.65], [-66.32, -48.68], [-66.47, -49.03], [-67.0, -49.25], [-67.25, -49.15], [-67.5, -49.25], [-67.75, -49.15], [-68.0, -49.25], [-68.25, -49.15], [-68.5, -49.25], [-68.75, -49.15], [-69.0, -49.25], [-69.25, -49.15], [-69.32, -49.18], [-69.47, -49.53], [-69.82, -49.68], [-69.85, -49.75], [-69.75, -50.0], [-69.97, -50.53], [-70.5, -50.75], [-70.75, -50.65], [-70.82, -50.68], [-70.97, -51.03], [-71.5, -51.25], [-72.03, -51.03], [-72.25, -50.5], [-72.15, -50.25], [-72.18, -50.18], [-72.53, -50.03], [-72.75, -49.5], [-72.65, -49.25], [-72.75, -49.0], [-72.54, -48.5], [-72.68, -48.18], [-73.03, -48.03], [-73.25, -47.5]]]]}, "2013-09-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.25, -47.5], [-73.03, -46.97], [-72.5, -46.75], [-72.2, -46.88], [-72.03, -46.47], [-71.5, -46.25], [-71.25, -46.35], [-71.0, -46.25], [-70.75, -46.35], [-70.68, -46.32], [-70.53, -45.97], [-70.0, -45.75], [-69.75, -45.85], [-69.5, -45.75], [-69.25, -45.85], [-69.0, -45.75], [-68.75, -45.85], [-68.5, -45.75], [-68.25, -45.85], [-68.0, -45.75], [-67.75, -45.85], [-67.5, -45.75], [-66.97, -45.97], [-66.82, -46.32], [-66.75, -46.35], [-66.5, -46.25], [-65.97, -46.47], [-65.82, -46.82], [-65.47, -46.97], [-65.25, -47.5], [-65.35, -47.75], [-65.25, -48.0], [-65.47, -48.53], [-66.0, -48.75], [-66.5, -48.54], [-67.0, -48.75], [-67.25, -48.65], [-67.32, -48.68], [-67.47, -49.03], [-68.0, -49.25], [-68.25, -49.15], [-68.5, -49.25], [-68.75, -49.15], [-69.0, -49.25], [-69.25, -49.15], [-69.32, -49.18], [-69.47, -49.53], [-69.82, -49.68], [-69.85, -49.75], [-69.75, -50.0], [-69.97, -50.53], [-70.5, -50.75], [-70.75, -50.65], [-70.82, -50.68], [-70.97, -51.03], [-71.5, -51.25], [-72.03, -51.03], [-72.25, -50.5], [-72.15, -50.25], [-72.18, -50.18], [-72.53, -50.03], [-72.75, -49.5], [-72.65, -49.25], [-72.75, -49.0], [-72.54, -48.5], [-72.68, -48.18], [-73.03, -48.03], [-73.25, -47.5]]]]}, "2013-09-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.18, -48.32], [-72.15, -48.25], [-72.2, -48.12], [-72.5, -48.25], [-73.03, -48.03], [-73.25, -47.5], [-73.03, -46.97], [-72.5, -46.75], [-71.97, -46.97], [-71.8, -47.38], [-71.5, -47.25], [-71.25, -47.35], [-71.0, -47.25], [-70.47, -47.47], [-70.25, -48.0], [-70.35, -48.25], [-70.25, -48.5], [-70.35, -48.75], [-70.25, -49.0], [-70.47, -49.53], [-71.0, -49.75], [-71.25, -49.65], [-71.32, -49.68], [-71.47, -50.03], [-72.0, -50.25], [-72.53, -50.03], [-72.75, -49.5], [-72.65, -49.25], [-72.75, -49.0], [-72.53, -48.47], [-72.18, -48.32]]], [[[-69.5, -46.25], [-69.25, -46.35], [-69.0, -46.25], [-68.75, -46.35], [-68.5, -46.25], [-68.25, -46.35], [-68.0, -46.25], [-67.75, -46.35], [-67.5, -46.25], [-66.97, -46.47], [-66.75, -47.0], [-66.97, -47.53], [-67.32, -47.68], [-67.47, -48.03], [-68.0, -48.25], [-68.25, -48.15], [-68.5, -48.25], [-69.0, -48.04], [-69.5, -48.25], [-70.03, -48.03], [-70.25, -47.5], [-70.15, -47.25], [-70.25, -47.0], [-70.03, -46.47], [-69.5, -46.25]]]]}, "2013-09-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.18, -48.32], [-72.15, -48.25], [-72.25, -48.0], [-72.03, -47.47], [-71.5, -47.25], [-71.25, -47.35], [-71.0, -47.25], [-70.47, -47.47], [-70.25, -48.0], [-70.35, -48.25], [-70.25, -48.5], [-70.35, -48.75], [-70.25, -49.0], [-70.47, -49.53], [-71.0, -49.75], [-71.25, -49.65], [-71.32, -49.68], [-71.47, -50.03], [-72.0, -50.25], [-72.53, -50.03], [-72.75, -49.5], [-72.65, -49.25], [-72.75, -49.0], [-72.53, -48.47], [-72.18, -48.32]]], [[[-69.03, -47.53], [-69.25, -47.0], [-69.03, -46.47], [-68.5, -46.25], [-67.97, -46.47], [-67.75, -47.0], [-67.97, -47.53], [-68.5, -47.75], [-69.03, -47.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.869381557316729}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.531914379589759}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [0.09050562975767207, -1.1870171851256828, 0.19485301747181438, -0.2956511776577031, -0.032572016341646304, -0.3865029926466832, -1.6357224043782708]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-2.1865503975326988, -5.831308879523135, -5.101514662810644, -6.338303279781087, -6.858871618436638, -4.653574695695454, -4.4005065568376835]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.017819514489117, -6.5068660556519875, -5.1973315343557305, -5.628554814638688, -5.397826235831683, -4.609482218445371, -4.195894926165471]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.824538586825554, -9.869381557316729, -9.843838071634423, -9.247201531071937, -8.77341082231004, -6.4098797664889275, -5.580274786748646]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3634289281628666, -2.085397895580213, -1.6088517533562254, -1.7909667024531841, -1.6863681232465313, -1.4931123995283908, -1.4622353959954966]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.634770784240932, -2.956572308431164, -2.8123737674724385, -2.6994830970285344, -2.663705351796579, -1.8709148690202113, -1.927098961710095]}}