{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:23:38.287161", "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": "2021-Mar-21_to_2021-Mar-25_302.5_4.5"}, "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": 2021030000878}, "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": "March 21 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 25 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 107889.85986837179}, "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", "French Guiana", "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": 4.5}, "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": 302.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "302.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 299.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 306.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 2.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 5.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-03-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-58.03, 5.53], [-57.5, 5.75], [-57.25, 5.65], [-57.0, 5.75], [-56.75, 5.65], [-56.5, 5.75], [-55.97, 5.53], [-55.82, 5.18], [-55.75, 5.15], [-55.68, 5.18], [-55.53, 5.53], [-55.0, 5.75], [-54.75, 5.65], [-54.5, 5.75], [-53.97, 5.53], [-53.82, 5.18], [-53.47, 5.03], [-53.25, 4.5], [-53.47, 3.97], [-54.0, 3.75], [-54.25, 3.85], [-54.5, 3.75], [-54.75, 3.85], [-55.0, 3.75], [-55.25, 3.85], [-55.5, 3.75], [-55.75, 3.85], [-56.0, 3.75], [-56.25, 3.85], [-56.5, 3.75], [-56.75, 3.85], [-57.0, 3.75], [-57.25, 3.85], [-57.5, 3.75], [-58.03, 3.97], [-58.25, 4.5], [-58.15, 4.75], [-58.25, 5.0], [-58.03, 5.53]]]]}, "2021-03-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-58.15, 4.75], [-58.25, 5.0], [-58.03, 5.53], [-57.68, 5.68], [-57.53, 6.03], [-57.0, 6.25], [-56.47, 6.03], [-56.32, 5.68], [-55.97, 5.53], [-55.82, 5.18], [-55.75, 5.15], [-55.68, 5.18], [-55.53, 5.53], [-55.0, 5.75], [-54.75, 5.65], [-54.5, 5.75], [-53.97, 5.53], [-53.82, 5.18], [-53.47, 5.03], [-53.25, 4.5], [-53.47, 3.97], [-54.0, 3.75], [-54.25, 3.85], [-54.5, 3.75], [-54.75, 3.85], [-55.0, 3.75], [-55.25, 3.85], [-55.5, 3.75], [-55.75, 3.85], [-56.0, 3.75], [-56.25, 3.85], [-56.32, 3.82], [-56.47, 3.47], [-57.0, 3.25], [-57.25, 3.35], [-57.5, 3.25], [-58.03, 3.47], [-58.25, 4.0], [-58.15, 4.25], [-58.25, 4.5], [-58.15, 4.75]]]]}, "2021-03-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.03, 4.03], [-60.5, 4.25], [-60.25, 4.15], [-60.0, 4.25], [-59.75, 4.15], [-59.68, 4.18], [-59.65, 4.25], [-59.75, 4.5], [-59.65, 4.75], [-59.75, 5.0], [-59.53, 5.53], [-59.0, 5.75], [-58.75, 5.65], [-58.5, 5.75], [-58.0, 5.54], [-57.68, 5.68], [-57.53, 6.03], [-57.0, 6.25], [-56.47, 6.03], [-56.32, 5.68], [-55.97, 5.53], [-55.82, 5.18], [-55.75, 5.15], [-55.68, 5.18], [-55.53, 5.53], [-55.0, 5.75], [-54.75, 5.65], [-54.5, 5.75], [-53.97, 5.53], [-53.82, 5.18], [-53.47, 5.03], [-53.25, 4.5], [-53.47, 3.97], [-54.0, 3.75], [-54.25, 3.85], [-54.5, 3.75], [-54.75, 3.85], [-55.0, 3.75], [-55.25, 3.85], [-55.5, 3.75], [-55.75, 3.85], [-56.0, 3.75], [-56.25, 3.85], [-56.32, 3.82], [-56.35, 3.75], [-56.25, 3.5], [-56.47, 2.97], [-57.0, 2.75], [-57.25, 2.85], [-57.5, 2.75], [-57.75, 2.85], [-58.0, 2.75], [-58.25, 2.85], [-58.32, 2.82], [-58.47, 2.47], [-59.0, 2.25], [-59.25, 2.35], [-59.5, 2.25], [-60.0, 2.46], [-60.5, 2.25], [-61.03, 2.47], [-61.25, 3.0], [-61.15, 3.25], [-61.25, 3.5], [-61.03, 4.03]]]]}, "2021-03-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.03, 4.03], [-60.5, 4.25], [-60.25, 4.15], [-60.0, 4.25], [-59.75, 4.15], [-59.68, 4.18], [-59.65, 4.25], [-59.75, 4.5], [-59.65, 4.75], [-59.75, 5.0], [-59.53, 5.53], [-59.0, 5.75], [-58.75, 5.65], [-58.5, 5.75], [-58.0, 5.54], [-57.68, 5.68], [-57.53, 6.03], [-57.0, 6.25], [-56.47, 6.03], [-56.32, 5.68], [-55.97, 5.53], [-55.75, 5.0], [-55.85, 4.75], [-55.75, 4.5], [-55.97, 3.97], [-56.32, 3.82], [-56.35, 3.75], [-56.25, 3.5], [-56.47, 2.97], [-57.0, 2.75], [-57.25, 2.85], [-57.5, 2.75], [-57.75, 2.85], [-58.0, 2.75], [-58.25, 2.85], [-58.32, 2.82], [-58.47, 2.47], [-59.0, 2.25], [-59.25, 2.35], [-59.5, 2.25], [-60.0, 2.46], [-60.5, 2.25], [-61.03, 2.47], [-61.25, 3.0], [-61.15, 3.25], [-61.25, 3.5], [-61.03, 4.03]]]]}, "2021-03-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.03, 4.03], [-60.5, 4.25], [-60.25, 4.15], [-60.0, 4.25], [-59.75, 4.15], [-59.68, 4.18], [-59.65, 4.25], [-59.75, 4.5], [-59.65, 4.75], [-59.75, 5.0], [-59.53, 5.53], [-59.0, 5.75], [-58.75, 5.65], [-58.5, 5.75], [-57.97, 5.53], [-57.82, 5.18], [-57.75, 5.15], [-57.5, 5.25], [-56.97, 5.03], [-56.75, 4.5], [-56.85, 4.25], [-56.82, 4.18], [-56.47, 4.03], [-56.25, 3.5], [-56.47, 2.97], [-57.0, 2.75], [-57.25, 2.85], [-57.5, 2.75], [-57.75, 2.85], [-58.0, 2.75], [-58.25, 2.85], [-58.32, 2.82], [-58.47, 2.47], [-59.0, 2.25], [-59.25, 2.35], [-59.5, 2.25], [-60.0, 2.46], [-60.5, 2.25], [-61.03, 2.47], [-61.25, 3.0], [-61.15, 3.25], [-61.25, 3.5], [-61.03, 4.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.2096400755641525}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5975680267961856}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.72068634885551, 24.650003691220036, 24.625963086079594, 24.704131990633016, 25.245888775909407]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.25863731770056, 24.073578068075392, 23.298044054395405, 23.547266704083597, 24.308438976769537]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.1887311200620685, -1.262867959152107, -1.773930504864115, -1.8280997356296373, -1.5043540406121185]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.5797076902914, -1.7746783132870974, -2.534107777628094, -3.2096400755641525, -2.1820872724299534]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5647063997519588, -1.6260400755318252, -2.046076331917145, -2.018952265683482, -1.6021881061069099]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.352162082017353, -2.2770291678500025, -2.7077772777138174, -2.3709692575159957, -2.2757977802775384]}}