{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:57.232461", "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": "2015-May-05_to_2015-May-08_302.0_3.0"}, "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": 2015050000284}, "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": "May 05 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 08 2015"}, "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": 67964.87833612056}, "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", "Guyana", "Suriname"]}, "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": 3.0}, "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": 300.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 303.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 0.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 3.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-05-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-58.0, 3.75], [-57.47, 3.53], [-57.25, 3.0], [-57.47, 2.47], [-58.0, 2.25], [-58.53, 2.47], [-58.75, 3.0], [-58.53, 3.53], [-58.0, 3.75]]]]}, "2015-05-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.65, 1.75], [-59.75, 2.0], [-59.53, 2.53], [-59.18, 2.68], [-59.03, 3.03], [-58.68, 3.18], [-58.53, 3.53], [-58.0, 3.75], [-57.75, 3.65], [-57.5, 3.75], [-56.97, 3.53], [-56.82, 3.18], [-56.47, 3.03], [-56.32, 2.68], [-55.97, 2.53], [-55.75, 2.0], [-55.97, 1.47], [-56.32, 1.32], [-56.47, 0.97], [-56.82, 0.82], [-56.97, 0.47], [-57.5, 0.25], [-57.75, 0.35], [-57.82, 0.32], [-57.97, -0.03], [-58.5, -0.25], [-59.03, -0.03], [-59.18, 0.32], [-59.53, 0.47], [-59.75, 1.0], [-59.65, 1.25], [-59.75, 1.5], [-59.65, 1.75]]]]}, "2015-05-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.65, 1.75], [-59.75, 2.0], [-59.53, 2.53], [-59.18, 2.68], [-59.03, 3.03], [-58.68, 3.18], [-58.53, 3.53], [-58.0, 3.75], [-57.75, 3.65], [-57.5, 3.75], [-56.97, 3.53], [-56.82, 3.18], [-56.47, 3.03], [-56.32, 2.68], [-55.97, 2.53], [-55.75, 2.0], [-55.97, 1.47], [-56.32, 1.32], [-56.47, 0.97], [-56.82, 0.82], [-56.97, 0.47], [-57.5, 0.25], [-57.75, 0.35], [-57.82, 0.32], [-57.97, -0.03], [-58.5, -0.25], [-59.03, -0.03], [-59.18, 0.32], [-59.53, 0.47], [-59.75, 1.0], [-59.65, 1.25], [-59.75, 1.5], [-59.65, 1.75]]]]}, "2015-05-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.65, 1.75], [-59.75, 2.0], [-59.53, 2.53], [-59.18, 2.68], [-59.03, 3.03], [-58.68, 3.18], [-58.53, 3.53], [-58.0, 3.75], [-57.75, 3.65], [-57.5, 3.75], [-56.97, 3.53], [-56.82, 3.18], [-56.47, 3.03], [-56.32, 2.68], [-55.97, 2.53], [-55.75, 2.0], [-55.97, 1.47], [-56.32, 1.32], [-56.47, 0.97], [-56.82, 0.82], [-56.97, 0.47], [-57.5, 0.25], [-57.75, 0.35], [-57.82, 0.32], [-57.97, -0.03], [-58.5, -0.25], [-59.03, -0.03], [-59.18, 0.32], [-59.53, 0.47], [-59.75, 1.0], [-59.65, 1.25], [-59.75, 1.5], [-59.65, 1.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.5775323201068545}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.7876909571897879}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.553464983402307, 23.12845464028203, 22.398829920031915, 23.08431561742043]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.553464983402307, 22.388306469132715, 21.578240084066408, 21.845257238962745]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.397358742664892, -1.5700592864110015, -2.255792935468073, -1.5549630230777842]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.397358742664892, -1.90500071541868, -2.5775323201068545, -1.907529946821171]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.597646813468999, -1.7572782658570931, -2.5701998288012713, -1.769888236471021]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.597646813468999, -2.106348148003621, -2.9292260954676963, -2.168616780703096]}}