{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-05-20 10:38:10.539123", "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-17_to_2021-Feb-21_323.5_-54.5"}, "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": 2021020001961}, "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 17 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 21 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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 53495.31728466646}, "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": ["South Georgia and the South Sandwich Islands"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Southern-Ocean"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Antarctica"]}, "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": -54.5}, "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": 323.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "323.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 319.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 324.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -56.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -53.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-02-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-41.03, -55.03], [-41.25, -54.5], [-41.03, -53.97], [-40.5, -53.75], [-40.25, -53.85], [-40.0, -53.75], [-39.75, -53.85], [-39.68, -53.82], [-39.53, -53.47], [-39.0, -53.25], [-38.75, -53.35], [-38.5, -53.25], [-38.25, -53.35], [-38.0, -53.25], [-37.75, -53.35], [-37.5, -53.25], [-37.25, -53.35], [-37.0, -53.25], [-36.75, -53.35], [-36.5, -53.25], [-35.97, -53.47], [-35.82, -53.82], [-35.47, -53.97], [-35.25, -54.5], [-35.35, -54.75], [-35.25, -55.0], [-35.47, -55.53], [-35.82, -55.68], [-35.85, -55.75], [-35.75, -56.0], [-35.97, -56.53], [-36.5, -56.75], [-36.75, -56.65], [-37.0, -56.75], [-37.53, -56.53], [-37.68, -56.18], [-37.75, -56.15], [-38.0, -56.25], [-38.53, -56.03], [-38.68, -55.68], [-38.75, -55.65], [-39.0, -55.75], [-39.25, -55.65], [-39.5, -55.75], [-40.03, -55.53], [-40.18, -55.18], [-40.25, -55.15], [-40.5, -55.25], [-41.03, -55.03]]]]}, "2021-02-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-41.03, -55.03], [-41.25, -54.5], [-41.03, -53.97], [-40.5, -53.75], [-40.25, -53.85], [-40.0, -53.75], [-39.75, -53.85], [-39.68, -53.82], [-39.53, -53.47], [-39.0, -53.25], [-38.75, -53.35], [-38.5, -53.25], [-38.25, -53.35], [-38.0, -53.25], [-37.75, -53.35], [-37.5, -53.25], [-37.25, -53.35], [-37.0, -53.25], [-36.75, -53.35], [-36.5, -53.25], [-35.97, -53.47], [-35.82, -53.82], [-35.47, -53.97], [-35.25, -54.5], [-35.35, -54.75], [-35.25, -55.0], [-35.47, -55.53], [-35.82, -55.68], [-35.85, -55.75], [-35.75, -56.0], [-35.97, -56.53], [-36.5, -56.75], [-36.75, -56.65], [-37.0, -56.75], [-37.53, -56.53], [-37.68, -56.18], [-37.75, -56.15], [-38.0, -56.25], [-38.53, -56.03], [-38.68, -55.68], [-38.75, -55.65], [-39.0, -55.75], [-39.25, -55.65], [-39.5, -55.75], [-40.03, -55.53], [-40.18, -55.18], [-40.25, -55.15], [-40.5, -55.25], [-41.03, -55.03]]]]}, "2021-02-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-41.03, -55.03], [-41.25, -54.5], [-41.03, -53.97], [-40.5, -53.75], [-40.25, -53.85], [-40.0, -53.75], [-39.75, -53.85], [-39.68, -53.82], [-39.53, -53.47], [-39.0, -53.25], [-38.75, -53.35], [-38.5, -53.25], [-38.25, -53.35], [-38.0, -53.25], [-37.75, -53.35], [-37.5, -53.25], [-37.25, -53.35], [-37.0, -53.25], [-36.75, -53.35], [-36.5, -53.25], [-35.97, -53.47], [-35.82, -53.82], [-35.47, -53.97], [-35.25, -54.5], [-35.35, -54.75], [-35.25, -55.0], [-35.47, -55.53], [-35.82, -55.68], [-35.85, -55.75], [-35.75, -56.0], [-35.97, -56.53], [-36.5, -56.75], [-36.75, -56.65], [-37.0, -56.75], [-37.53, -56.53], [-37.68, -56.18], [-37.75, -56.15], [-38.0, -56.25], [-38.53, -56.03], [-38.68, -55.68], [-38.75, -55.65], [-39.0, -55.75], [-39.25, -55.65], [-39.5, -55.75], [-40.03, -55.53], [-40.18, -55.18], [-40.25, -55.15], [-40.5, -55.25], [-41.03, -55.03]]]]}, "2021-02-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-38.03, -54.53], [-38.25, -54.0], [-38.03, -53.47], [-37.5, -53.25], [-37.25, -53.35], [-37.0, -53.25], [-36.75, -53.35], [-36.5, -53.25], [-35.97, -53.47], [-35.82, -53.82], [-35.47, -53.97], [-35.25, -54.5], [-35.47, -55.03], [-36.0, -55.25], [-36.25, -55.15], [-36.5, -55.25], [-37.03, -55.03], [-37.18, -54.68], [-37.25, -54.65], [-37.5, -54.75], [-38.03, -54.53]]]]}, "2021-02-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-36.5, -53.75], [-35.97, -53.97], [-35.75, -54.5], [-35.97, -55.03], [-36.5, -55.25], [-37.03, -55.03], [-37.25, -54.5], [-37.03, -53.97], [-36.5, -53.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.933526947773487}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.263839760179851}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [6.089423057750537, 5.626407554785544, 5.566087661225822, 5.9987904807996415, 4.055170618025102]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [7.00677242615609, 7.518174444839303, 8.389636422657873, 6.512304249151043, 4.055170618025102]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.442344679760358, 2.0785987280623277, 2.0996229931338406, 3.1676906944787335, 2.8731714761762532]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.931316963615245, 5.892883777663656, 6.933526947773487, 5.179280943049321, 2.8731714761762532]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [2.1712541461054458, 1.7562812618308725, 1.7555555527264726, 2.068964438487587, 1.377206576458163]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.6591799484287657, 2.979114266931515, 3.4882775551181284, 2.5224591436111092, 1.377206576458163]}}