{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:54:26.097733", "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-29_to_2013-Oct-01_302.0_-33.0"}, "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": 2013090001293}, "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 29 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 01 2013"}, "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": 104590.93772820366}, "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", "Uruguay"]}, "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": ["Rio de La Plata"]}, "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": -33.0}, "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": 302.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "302.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 298.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 302.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -35.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -30.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-09-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.53, -30.97], [-61.18, -30.82], [-61.15, -30.75], [-61.25, -30.5], [-61.03, -29.97], [-60.5, -29.75], [-60.25, -29.85], [-60.0, -29.75], [-59.75, -29.85], [-59.5, -29.75], [-58.97, -29.97], [-58.82, -30.32], [-58.75, -30.35], [-58.5, -30.25], [-58.25, -30.35], [-58.0, -30.25], [-57.47, -30.47], [-57.25, -31.0], [-57.35, -31.25], [-57.25, -31.5], [-57.35, -31.75], [-57.32, -31.82], [-56.97, -31.97], [-56.75, -32.5], [-56.85, -32.75], [-56.75, -33.0], [-56.85, -33.25], [-56.75, -33.5], [-56.85, -33.75], [-56.75, -34.0], [-56.85, -34.25], [-56.75, -34.5], [-56.97, -35.03], [-57.32, -35.18], [-57.47, -35.53], [-58.0, -35.75], [-58.53, -35.53], [-58.75, -35.0], [-58.62, -34.7], [-59.03, -34.53], [-59.25, -34.0], [-59.15, -33.75], [-59.18, -33.68], [-59.53, -33.53], [-59.68, -33.18], [-60.03, -33.03], [-60.18, -32.68], [-60.25, -32.65], [-60.5, -32.75], [-60.75, -32.65], [-61.0, -32.75], [-61.53, -32.53], [-61.75, -32.0], [-61.65, -31.75], [-61.75, -31.5], [-61.53, -30.97]]]]}, "2013-09-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.53, -30.97], [-61.18, -30.82], [-61.15, -30.75], [-61.25, -30.5], [-61.03, -29.97], [-60.5, -29.75], [-60.25, -29.85], [-60.0, -29.75], [-59.75, -29.85], [-59.5, -29.75], [-58.97, -29.97], [-58.82, -30.32], [-58.75, -30.35], [-58.5, -30.25], [-58.25, -30.35], [-58.0, -30.25], [-57.47, -30.47], [-57.25, -31.0], [-57.35, -31.25], [-57.25, -31.5], [-57.35, -31.75], [-57.32, -31.82], [-56.97, -31.97], [-56.75, -32.5], [-56.85, -32.75], [-56.75, -33.0], [-56.85, -33.25], [-56.75, -33.5], [-56.85, -33.75], [-56.75, -34.0], [-56.85, -34.25], [-56.75, -34.5], [-56.97, -35.03], [-57.32, -35.18], [-57.47, -35.53], [-58.0, -35.75], [-58.53, -35.53], [-58.75, -35.0], [-58.62, -34.7], [-59.03, -34.53], [-59.25, -34.0], [-59.15, -33.75], [-59.18, -33.68], [-59.53, -33.53], [-59.68, -33.18], [-60.03, -33.03], [-60.18, -32.68], [-60.25, -32.65], [-60.5, -32.75], [-60.75, -32.65], [-61.0, -32.75], [-61.53, -32.53], [-61.75, -32.0], [-61.65, -31.75], [-61.75, -31.5], [-61.53, -30.97]]]]}, "2013-10-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.53, -30.97], [-61.18, -30.82], [-61.15, -30.75], [-61.25, -30.5], [-61.03, -29.97], [-60.5, -29.75], [-60.25, -29.85], [-60.0, -29.75], [-59.75, -29.85], [-59.5, -29.75], [-58.97, -29.97], [-58.82, -30.32], [-58.75, -30.35], [-58.5, -30.25], [-58.25, -30.35], [-58.0, -30.25], [-57.47, -30.47], [-57.25, -31.0], [-57.35, -31.25], [-57.25, -31.5], [-57.35, -31.75], [-57.32, -31.82], [-56.97, -31.97], [-56.75, -32.5], [-56.85, -32.75], [-56.75, -33.0], [-56.85, -33.25], [-56.75, -33.5], [-56.85, -33.75], [-56.75, -34.0], [-56.85, -34.25], [-56.75, -34.5], [-56.97, -35.03], [-57.32, -35.18], [-57.47, -35.53], [-58.0, -35.75], [-58.53, -35.53], [-58.75, -35.0], [-58.62, -34.7], [-59.03, -34.53], [-59.25, -34.0], [-59.15, -33.75], [-59.18, -33.68], [-59.53, -33.53], [-59.68, -33.18], [-60.03, -33.03], [-60.18, -32.68], [-60.25, -32.65], [-60.5, -32.75], [-60.75, -32.65], [-61.0, -32.75], [-61.53, -32.53], [-61.75, -32.0], [-61.65, -31.75], [-61.75, -31.5], [-61.53, -30.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.713598442424882}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.934530769767706}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [10.999532212975737, 11.610720242383593, 12.197567960941058]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.971641827273345, 9.42423765638398, 9.999483375591353]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.47310501066413, -4.923059181395439, -4.407428117243546]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.713598442424882, -5.745727875875673, -5.0450740662502085]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.751381735843473, -1.6217486260428096, -1.4597492551822007]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9984486721586767, -1.9300269496487454, -1.69527106391054]}}