{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:10:04.837559", "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": "2018-Feb-09_to_2018-Feb-11_291.5_-42.0"}, "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": 2018020000350}, "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 09 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 11 2018"}, "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": 181818.23503219642}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.South-America", "S.South-America", "S.W.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": -42.0}, "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": 289.25}, "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": -45.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -38.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-02-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.15, -40.25], [-71.25, -40.0], [-71.15, -39.75], 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-44.0], [-69.15, -43.75], [-69.25, -43.5], [-69.15, -43.25], [-69.18, -43.18], [-69.25, -43.15], [-69.5, -43.25], [-70.03, -43.03], [-70.25, -42.5], [-70.15, -42.25], [-70.18, -42.18], [-70.53, -42.03], [-70.68, -41.68], [-71.03, -41.53], [-71.25, -41.0], [-71.15, -40.75], [-71.25, -40.5], [-71.15, -40.25]]]]}, "2018-02-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.15, -40.25], [-71.25, -40.0], [-71.15, -39.75], [-71.25, -39.5], [-71.15, -39.25], [-71.25, -39.0], [-71.15, -38.75], [-71.25, -38.5], [-71.03, -37.97], [-70.5, -37.75], [-70.25, -37.85], [-70.0, -37.75], [-69.47, -37.97], [-69.32, -38.32], [-69.25, -38.35], [-69.0, -38.25], [-68.75, -38.35], [-68.5, -38.25], [-67.97, -38.47], [-67.75, -39.0], [-67.85, -39.25], [-67.75, -39.5], [-67.85, -39.75], [-67.82, -39.82], [-67.47, -39.97], [-67.32, -40.32], [-66.97, -40.47], [-66.82, -40.82], [-66.47, -40.97], [-66.32, -41.32], [-66.25, -41.35], [-66.0, -41.25], [-65.75, -41.35], [-65.5, -41.25], [-64.97, 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[-70.03, -43.03], [-70.25, -42.5], [-70.15, -42.25], [-70.18, -42.18], [-70.53, -42.03], [-70.68, -41.68], [-71.03, -41.53], [-71.25, -41.0], [-71.15, -40.75], [-71.25, -40.5], [-71.15, -40.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.195832248831834}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.886754876547648}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.047321409192705, 12.16985686465506, 13.675577519539388]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [6.816971414741772, 6.0976926587172215, 8.349927185314982]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.754136673539242, -6.66692391721045, -5.23920403889325]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.164186536632712, -8.195832248831834, -7.125921977724602]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6832682900027474, -2.043500695373208, -1.644331131973461]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1213501178269647, -2.3151483019789927, -2.118429266158284]}}