{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:08.492815", "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-Apr-08_to_2012-Apr-13_287.5_-35.0"}, "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": 2012040000505}, "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 08 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 13 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 195780.20274882932}, "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": ["Chile"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": ["South Pacific 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": -35.0}, "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": 287.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "287.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 284.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 288.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -40.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -31.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.5, -34.25], [-72.97, -34.47], [-72.75, -35.0], [-72.97, -35.53], [-73.5, -35.75], [-74.03, -35.53], [-74.25, -35.0], [-74.03, -34.47], [-73.5, -34.25]]]]}, "2012-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-76.15, -36.75], [-76.25, -36.5], [-76.15, -36.25], [-76.25, -36.0], [-76.15, -35.75], [-76.25, -35.5], [-76.03, -34.97], [-75.68, -34.82], [-75.65, -34.75], [-75.75, -34.5], [-75.53, -33.97], [-75.18, -33.82], [-75.15, -33.75], [-75.25, -33.5], [-75.15, -33.25], [-75.25, -33.0], [-75.15, -32.75], [-75.25, -32.5], [-75.15, -32.25], [-75.25, -32.0], [-75.03, -31.47], [-74.5, -31.25], [-74.25, -31.35], [-74.0, -31.25], [-73.75, -31.35], [-73.5, -31.25], [-73.25, -31.35], [-73.0, -31.25], [-72.47, -31.47], [-72.25, -32.0], [-72.35, -32.25], [-72.25, -32.5], [-72.35, -32.75], [-72.32, -32.82], [-72.25, -32.85], [-72.0, -32.75], [-71.47, -32.97], [-71.25, -33.5], [-71.35, -33.75], [-71.25, -34.0], [-71.47, -34.53], [-71.82, -34.68], [-71.85, -34.75], [-71.75, -35.0], [-71.97, -35.53], [-72.32, -35.68], [-72.35, -35.75], [-72.25, -36.0], [-72.35, -36.25], [-72.25, -36.5], [-72.47, -37.03], [-72.82, -37.18], [-72.97, -37.53], [-73.32, -37.68], [-73.35, -37.75], [-73.32, -37.82], [-72.97, -37.97], [-72.75, -38.5], [-72.85, -38.75], [-72.75, -39.0], [-72.85, -39.25], [-72.75, -39.5], [-72.97, -40.03], [-73.32, -40.18], [-73.47, -40.53], [-74.0, -40.75], [-74.25, -40.65], [-74.5, -40.75], [-75.03, -40.53], [-75.18, -40.18], [-75.53, -40.03], [-75.75, -39.5], [-75.65, -39.25], [-75.75, -39.0], [-75.65, -38.75], [-75.75, -38.5], [-75.62, -38.2], [-76.03, -38.03], [-76.25, -37.5], [-76.15, -37.25], [-76.25, -37.0], [-76.15, -36.75]]]]}, "2012-04-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-76.15, -36.75], [-76.25, -36.5], [-76.15, -36.25], [-76.25, -36.0], [-76.15, -35.75], [-76.25, -35.5], [-76.03, -34.97], [-75.68, -34.82], [-75.65, -34.75], [-75.75, -34.5], [-75.53, -33.97], [-75.18, -33.82], [-75.15, -33.75], [-75.25, -33.5], [-75.15, -33.25], [-75.25, -33.0], [-75.15, -32.75], [-75.25, -32.5], [-75.15, -32.25], [-75.25, -32.0], [-75.03, -31.47], [-74.5, -31.25], [-74.25, -31.35], [-74.0, -31.25], [-73.75, -31.35], [-73.5, -31.25], [-73.25, -31.35], [-73.0, -31.25], [-72.47, -31.47], [-72.25, -32.0], [-72.35, -32.25], [-72.25, -32.5], [-72.35, -32.75], [-72.32, -32.82], [-72.25, -32.85], [-72.0, -32.75], [-71.47, -32.97], [-71.25, -33.5], [-71.35, -33.75], [-71.25, -34.0], [-71.47, -34.53], [-71.82, -34.68], [-71.85, -34.75], [-71.75, -35.0], [-71.97, -35.53], [-72.32, -35.68], [-72.35, -35.75], [-72.25, -36.0], [-72.35, -36.25], [-72.25, -36.5], [-72.47, -37.03], [-72.82, -37.18], [-72.97, -37.53], [-73.32, -37.68], [-73.35, -37.75], [-73.32, -37.82], [-72.97, -37.97], [-72.75, -38.5], [-72.85, -38.75], [-72.75, -39.0], [-72.85, -39.25], [-72.75, -39.5], [-72.97, -40.03], [-73.32, -40.18], [-73.47, -40.53], [-74.0, -40.75], [-74.25, -40.65], [-74.5, -40.75], [-75.03, -40.53], [-75.18, -40.18], [-75.53, -40.03], [-75.75, -39.5], [-75.65, -39.25], [-75.75, -39.0], [-75.65, -38.75], [-75.75, -38.5], [-75.62, -38.2], [-76.03, -38.03], [-76.25, -37.5], [-76.15, -37.25], [-76.25, -37.0], [-76.15, -36.75]]]]}, "2012-04-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-76.15, -36.75], [-76.25, -36.5], [-76.15, -36.25], [-76.25, -36.0], [-76.15, -35.75], [-76.25, -35.5], [-76.03, -34.97], [-75.68, -34.82], [-75.65, -34.75], [-75.75, -34.5], [-75.53, -33.97], [-75.18, -33.82], [-75.15, -33.75], [-75.25, -33.5], [-75.15, -33.25], [-75.25, -33.0], [-75.15, -32.75], [-75.25, -32.5], [-75.15, -32.25], [-75.25, -32.0], [-75.03, -31.47], [-74.5, -31.25], [-74.25, -31.35], [-74.0, -31.25], [-73.75, -31.35], [-73.5, -31.25], [-73.25, -31.35], [-73.0, -31.25], [-72.47, -31.47], [-72.25, -32.0], [-72.35, -32.25], [-72.25, -32.5], [-72.35, -32.75], [-72.32, -32.82], [-72.25, -32.85], [-72.0, -32.75], [-71.47, -32.97], [-71.25, -33.5], [-71.35, -33.75], [-71.25, -34.0], [-71.47, -34.53], [-71.82, -34.68], [-71.85, -34.75], [-71.75, -35.0], [-71.97, -35.53], [-72.32, -35.68], [-72.35, -35.75], [-72.25, -36.0], [-72.35, -36.25], [-72.25, -36.5], [-72.47, -37.03], [-72.82, -37.18], [-72.97, -37.53], [-73.32, -37.68], [-73.35, -37.75], [-73.32, -37.82], [-72.97, -37.97], [-72.75, -38.5], [-72.85, -38.75], [-72.75, -39.0], [-72.85, -39.25], [-72.75, -39.5], [-72.97, -40.03], [-73.32, -40.18], [-73.47, -40.53], [-74.0, -40.75], [-74.25, -40.65], [-74.5, -40.75], [-75.03, -40.53], [-75.18, -40.18], [-75.53, -40.03], [-75.75, -39.5], [-75.65, -39.25], [-75.75, -39.0], [-75.65, -38.75], [-75.75, -38.5], [-75.62, -38.2], [-76.03, -38.03], [-76.25, -37.5], [-76.15, -37.25], [-76.25, -37.0], [-76.15, -36.75]]]]}, "2012-04-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.65, -35.25], [-75.75, -35.0], [-75.65, -34.75], [-75.75, -34.5], [-75.53, -33.97], [-75.18, -33.82], [-75.15, -33.75], [-75.25, -33.5], [-75.15, -33.25], [-75.25, -33.0], [-75.15, -32.75], [-75.25, -32.5], [-75.15, -32.25], [-75.25, -32.0], [-75.03, -31.47], [-74.5, -31.25], [-74.25, -31.35], [-74.0, -31.25], [-73.47, -31.47], [-73.32, -31.82], [-72.97, -31.97], [-72.75, -32.5], [-72.85, -32.75], [-72.82, -32.82], [-72.5, -32.96], [-72.0, -32.75], [-71.47, -32.97], [-71.25, -33.5], [-71.35, -33.75], [-71.25, -34.0], [-71.47, -34.53], [-71.82, -34.68], [-71.85, -34.75], [-71.75, -35.0], [-71.97, -35.53], [-72.32, -35.68], [-72.35, -35.75], [-72.25, -36.0], [-72.47, -36.53], [-72.82, -36.68], [-72.85, -36.75], [-72.75, -37.0], [-72.97, -37.53], [-73.32, -37.68], [-73.35, -37.75], [-73.25, -38.0], [-73.35, -38.25], [-73.32, -38.32], [-72.97, -38.47], [-72.75, -39.0], [-72.85, -39.25], [-72.75, -39.5], [-72.97, -40.03], [-73.32, -40.18], [-73.47, -40.53], [-74.0, -40.75], [-74.53, -40.53], [-74.75, -40.0], [-74.65, -39.75], [-74.75, -39.5], [-74.65, -39.25], [-74.75, -39.0], [-74.65, -38.75], [-74.75, -38.5], [-74.65, -38.25], [-74.75, -38.0], [-74.65, -37.75], [-74.75, -37.5], [-74.65, -37.25], [-74.75, -37.0], [-74.65, -36.75], [-74.68, -36.68], [-74.75, -36.65], [-75.0, -36.75], [-75.53, -36.53], [-75.75, -36.0], [-75.65, -35.75], [-75.75, -35.5], [-75.65, -35.25]]]]}, "2012-04-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.53, -34.97], [-73.18, -34.82], [-73.15, -34.75], [-73.18, -34.68], [-73.25, -34.65], [-73.5, -34.75], [-74.03, -34.53], [-74.25, -34.0], [-74.03, -33.47], [-73.5, -33.25], [-73.25, -33.35], [-73.0, -33.25], [-72.75, -33.35], [-72.68, -33.32], [-72.53, -32.97], [-72.0, -32.75], [-71.47, -32.97], [-71.25, -33.5], [-71.35, -33.75], [-71.25, -34.0], [-71.47, -34.53], [-71.82, -34.68], [-71.85, -34.75], [-71.75, -35.0], [-71.97, -35.53], [-72.32, -35.68], [-72.47, -36.03], [-72.87, -36.2], [-72.75, -36.5], [-72.97, -37.03], [-73.5, -37.25], [-74.03, -37.03], [-74.25, -36.5], [-74.03, -35.97], [-73.62, -35.8], [-73.75, -35.5], [-73.53, -34.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.425230376364425}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.94391522569317}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.815660480479892, 13.012761462407752, 12.663122592720526, 12.793807523553028, 12.97140360112428, 12.808493316506315]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.815660480479892, 9.740152119514107, 9.396761842270507, 9.802050146571219, 9.817562488315332, 12.001548865971756]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.1545977994753684, -1.8669048109477042, -2.148898789817332, -1.9758210155198863, -1.7845602122782331, -1.5844236567140229]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.1545977994753684, -2.8148682397950893, -3.425230376364425, -2.969931885295864, -2.922590796930592, -2.001682156100742]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.0956546679116026, -1.7675023161928822, -2.0432987452813847, -1.8807225339163711, -1.722546290202636, -1.644895829282981]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.0956546679116026, -2.3048127629212387, -2.8062705646301063, -2.335322247983541, -2.2904923978132823, -2.115099998110444]}}