{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:19:28.713331", "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": "2020-Apr-13_to_2020-Apr-15_304.5_-2.5"}, "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": 2020040000363}, "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": "April 13 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 15 2020"}, "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": 52514.54971191539}, "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.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": -2.5}, "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": 304.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "304.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 303.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 306.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -3.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -0.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-04-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.03, -1.97], [-56.68, -1.82], [-56.53, -1.47], [-56.18, -1.32], [-56.03, -0.97], [-55.68, -0.82], [-55.53, -0.47], [-55.0, -0.25], [-54.75, -0.35], [-54.68, -0.32], [-54.53, 0.03], [-54.0, 0.25], [-53.47, 0.03], [-53.25, -0.5], [-53.35, -0.75], [-53.25, -1.0], [-53.47, -1.53], [-53.82, -1.68], [-53.85, -1.75], [-53.75, -2.0], [-53.97, -2.53], [-54.5, -2.75], [-54.75, -2.65], [-54.82, -2.68], [-54.85, -2.75], [-54.75, -3.0], [-54.97, -3.53], [-55.5, -3.75], [-55.75, -3.65], [-56.0, -3.75], [-56.25, -3.65], [-56.5, -3.75], [-57.03, -3.53], [-57.25, -3.0], [-57.15, -2.75], [-57.25, -2.5], [-57.03, -1.97]]]]}, "2020-04-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.03, -1.97], [-56.68, -1.82], [-56.53, -1.47], [-56.18, -1.32], [-56.03, -0.97], [-55.68, -0.82], [-55.53, -0.47], [-55.0, -0.25], [-54.75, -0.35], [-54.68, -0.32], [-54.53, 0.03], [-54.0, 0.25], [-53.47, 0.03], [-53.25, -0.5], [-53.35, -0.75], [-53.25, -1.0], [-53.47, -1.53], [-53.82, -1.68], [-53.85, -1.75], [-53.75, -2.0], [-53.97, -2.53], [-54.5, -2.75], [-54.75, -2.65], [-54.82, -2.68], [-54.85, -2.75], [-54.75, -3.0], [-54.97, -3.53], [-55.5, -3.75], [-55.75, -3.65], [-56.0, -3.75], [-56.25, -3.65], [-56.5, -3.75], [-57.03, -3.53], [-57.25, -3.0], [-57.15, -2.75], [-57.25, -2.5], [-57.03, -1.97]]]]}, "2020-04-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.03, -1.97], [-56.68, -1.82], [-56.53, -1.47], [-56.18, -1.32], [-56.03, -0.97], [-55.68, -0.82], [-55.53, -0.47], [-55.0, -0.25], [-54.75, -0.35], [-54.68, -0.32], [-54.53, 0.03], [-54.0, 0.25], [-53.47, 0.03], [-53.25, -0.5], [-53.35, -0.75], [-53.25, -1.0], [-53.47, -1.53], [-53.82, -1.68], [-53.85, -1.75], [-53.75, -2.0], [-53.97, -2.53], [-54.5, -2.75], [-54.75, -2.65], [-54.82, -2.68], [-54.85, -2.75], [-54.75, -3.0], [-54.97, -3.53], [-55.5, -3.75], [-55.75, -3.65], [-56.0, -3.75], [-56.25, -3.65], [-56.5, -3.75], [-57.03, -3.53], [-57.25, -3.0], [-57.15, -2.75], [-57.25, -2.5], [-57.03, -1.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.989465145961958}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.7809798327392137}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.50898004431457, 24.147306758193622, 23.955147538432016]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.534441887220794, 22.51257156504323, 21.794679627522328]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.156441542672593, -1.5050846789443961, -1.6814132766006518]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.989465145961958, -2.0175840235990563, -2.529851285839186]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.6683505659801807, -1.9078916486502735, -2.115142633521447]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.301501547358301, -2.7854752855112173, -3.2891096053797524]}}