{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:19.397724", "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": "2012-Jan-13_to_2012-Jan-16_308.5_-31.0"}, "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": 2012010000696}, "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": "January 13 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 16 2012"}, "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": 52960.605650182246}, "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": ["S.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": ["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": -31.0}, "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": 308.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "308.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 306.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 309.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -32.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -29.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-01-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-54.25, -30.5], [-54.03, -29.97], [-53.68, -29.82], [-53.53, -29.47], [-53.0, -29.25], [-52.75, -29.35], [-52.5, -29.25], [-51.97, -29.47], [-51.82, -29.82], [-51.47, -29.97], [-51.32, -30.32], [-50.97, -30.47], [-50.82, -30.82], [-50.47, -30.97], [-50.32, -31.32], [-49.97, -31.47], [-49.75, -32.0], [-49.97, -32.53], [-50.5, -32.75], [-51.03, -32.53], [-51.18, -32.18], [-51.5, -32.04], [-52.0, -32.25], [-52.5, -32.04], [-53.0, -32.25], [-53.53, -32.03], [-53.75, -31.5], [-53.65, -31.25], [-53.68, -31.18], [-54.03, -31.03], [-54.25, -30.5]]]]}, "2012-01-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-54.25, -30.5], [-54.03, -29.97], [-53.68, -29.82], [-53.53, -29.47], [-53.0, -29.25], [-52.75, -29.35], [-52.5, -29.25], [-51.97, -29.47], [-51.82, -29.82], [-51.5, -29.96], [-51.0, -29.75], [-50.47, -29.97], [-50.25, -30.5], [-50.35, -30.75], [-50.32, -30.82], [-49.97, -30.97], [-49.75, -31.5], [-49.85, -31.75], [-49.75, -32.0], [-49.97, -32.53], [-50.5, -32.75], [-50.75, -32.65], [-51.0, -32.75], [-51.25, -32.65], [-51.5, -32.75], [-52.03, -32.53], [-52.18, -32.18], [-52.5, -32.04], [-53.0, -32.25], [-53.53, -32.03], [-53.75, -31.5], [-53.65, -31.25], [-53.68, -31.18], [-54.03, -31.03], [-54.25, -30.5]]]]}, "2012-01-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-54.25, -30.5], [-54.03, -29.97], [-53.68, -29.82], [-53.53, -29.47], [-53.0, -29.25], [-52.75, -29.35], [-52.5, -29.25], [-51.97, -29.47], [-51.82, -29.82], [-51.5, -29.96], [-51.0, -29.75], [-50.47, -29.97], [-50.25, -30.5], [-50.35, -30.75], [-50.32, -30.82], [-49.97, -30.97], [-49.75, -31.5], [-49.85, -31.75], [-49.75, -32.0], [-49.97, -32.53], [-50.5, -32.75], [-50.75, -32.65], [-51.0, -32.75], [-51.25, -32.65], [-51.5, -32.75], [-52.03, -32.53], [-52.18, -32.18], [-52.5, -32.04], [-53.0, -32.25], [-53.53, -32.03], [-53.75, -31.5], [-53.65, -31.25], [-53.68, -31.18], [-54.03, -31.03], [-54.25, -30.5]]]]}, "2012-01-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-52.15, -31.25], [-52.25, -31.0], [-52.03, -30.47], [-51.68, -30.32], [-51.53, -29.97], [-51.0, -29.75], [-50.47, -29.97], [-50.25, -30.5], [-50.35, -30.75], [-50.32, -30.82], [-49.97, -30.97], [-49.75, -31.5], [-49.85, -31.75], [-49.75, -32.0], [-49.97, -32.53], [-50.5, -32.75], [-50.75, -32.65], [-51.0, -32.75], [-51.25, -32.65], [-51.5, -32.75], [-52.03, -32.53], [-52.25, -32.0], [-52.15, -31.75], [-52.25, -31.5], [-52.15, -31.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.291016485330829}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.7003175121159715}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.52222882591741, 20.836284566412758, 20.81176984692047, 21.40144016522123]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.190774473207455, 18.93836659977228, 18.77099622458934, 20.91142765607657]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.208220824945069, -2.699826744192515, -2.656364420176314, -2.009009825188741]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.291016485330829, -3.355627795815508, -3.253948812632757, -2.3830809669969426]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.626495286244684, -1.5398886844944326, -1.5161112100434937, -1.463320368588781]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.970886093236161, -1.7342670421266144, -1.7171690750436237, -1.5739582551248743]}}