{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:22:14.136905", "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": "2022-Aug-14_to_2022-Aug-23_320.5_-9.0"}, "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": 2022080000643}, "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": "August 14 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 23 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 10}, "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": 88509.20418991514}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": ["Atlantic Ocean", "Oceano Atl\u00e2ntico"]}, "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": -9.0}, "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": 320.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "320.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 320.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 324.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -10.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -7.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-39.5, -8.25], [-39.25, -8.35], [-39.0, -8.25], [-38.75, -8.35], [-38.68, -8.32], [-38.53, -7.97], [-38.0, -7.75], [-37.75, -7.85], [-37.68, -7.82], [-37.65, -7.75], [-37.75, -7.5], [-37.53, -6.97], [-37.0, -6.75], [-36.75, -6.85], [-36.5, -6.75], [-35.97, -6.97], [-35.75, -7.5], [-35.85, -7.75], [-35.8, -7.88], [-35.5, -7.75], [-34.97, -7.97], [-34.75, -8.5], [-34.85, -8.75], [-34.75, -9.0], [-34.97, -9.53], [-35.32, -9.68], [-35.47, -10.03], [-36.0, -10.25], [-36.25, -10.15], [-36.5, -10.25], [-36.75, -10.15], [-37.0, -10.25], [-37.3, -10.12], [-37.47, -10.53], [-37.82, -10.68], [-37.97, -11.03], [-38.5, -11.25], [-39.03, -11.03], [-39.18, -10.68], [-39.25, -10.65], [-39.5, -10.75], [-40.03, -10.53], [-40.18, -10.18], [-40.53, -10.03], [-40.75, -9.5], [-40.65, -9.25], [-40.75, -9.0], [-40.53, -8.47], [-40.0, -8.25], [-39.75, -8.35], [-39.5, -8.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-08-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.75, -7.5], [-37.52999999999997, -6.97], [-37.0, -6.75], [-36.47000000000003, -6.97], [-36.25, -7.5], [-36.35000000000002, -7.75], [-36.25, -8.0], [-36.47000000000003, -8.53], [-37.0, -8.75], [-37.52999999999997, -8.53], [-37.75, -8.0], [-37.64999999999998, -7.75], [-37.75, -7.5]]]]}, "2022-08-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.75, -7.5], [-37.52999999999997, -6.97], [-37.0, -6.75], [-36.47000000000003, -6.97], [-36.25, -7.5], [-36.35000000000002, -7.75], [-36.25, -8.0], [-36.47000000000003, -8.53], [-37.0, -8.75], [-37.52999999999997, -8.53], [-37.75, -8.0], [-37.64999999999998, -7.75], [-37.75, -7.5]]]]}, "2022-08-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.75, -7.5], [-37.52999999999997, -6.97], [-37.0, -6.75], [-36.47000000000003, -6.97], [-36.25, -7.5], [-36.35000000000002, -7.75], [-36.25, -8.0], [-36.47000000000003, -8.53], [-37.0, -8.75], [-37.52999999999997, -8.53], [-37.75, -8.0], [-37.64999999999998, -7.75], [-37.75, -7.5]]]]}, "2022-08-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.52999999999997, -6.97], [-37.0, -6.75], [-36.47000000000003, -6.97], [-36.25, -7.5], [-36.47000000000003, -8.03], [-37.0, -8.25], [-37.52999999999997, -8.03], [-37.75, -7.5], [-37.52999999999997, -6.97]]]]}, "2022-08-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-40.02999999999997, -9.53], [-40.25, -9.0], [-40.02999999999997, -8.47], [-39.5, -8.25], [-39.25, -8.35], [-39.0, -8.25], [-38.47000000000003, -8.47], [-38.25, -9.0], [-38.47000000000003, -9.53], [-39.0, -9.75], [-39.25, -9.65], [-39.5, -9.75], [-40.02999999999997, -9.53]]], [[[-37.75, -7.5], [-37.52999999999997, -6.97], [-37.0, -6.75], [-36.47000000000003, -6.97], [-36.31999999999999, -7.32], [-35.97000000000003, -7.47], [-35.75, -8.0], [-35.85000000000002, -8.25], [-35.75, -8.5], [-35.97000000000003, -9.03], [-36.5, -9.25], [-37.02999999999997, -9.03], [-37.25, -8.5], [-37.14999999999998, -8.25], [-37.18000000000001, -8.18], [-37.52999999999997, -8.03], [-37.75, -7.5]]]]}, "2022-08-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-40.75, -9.0], [-40.52999999999997, -8.47], [-40.0, -8.25], [-39.75, -8.35], [-39.5, -8.25], [-39.25, -8.35], [-39.0, -8.25], [-38.75, -8.35], [-38.5, -8.25], [-37.97000000000003, -8.47], [-37.81999999999999, -8.82], [-37.47000000000003, -8.97], [-37.25, -9.5], [-37.35000000000002, -9.75], [-37.25, -10.0], [-37.47000000000003, -10.53], [-37.81999999999999, -10.68], [-37.97000000000003, -11.03], [-38.5, -11.25], [-39.02999999999997, -11.03], [-39.18000000000001, -10.68], [-39.25, -10.65], [-39.5, -10.75], [-40.02999999999997, -10.53], [-40.25, -10.0], [-40.14999999999998, -9.75], [-40.18000000000001, -9.68], [-40.52999999999997, -9.53], [-40.75, -9.0]]], [[[-37.02999999999997, -7.47], [-36.5, -7.25], [-35.97000000000003, -7.47], [-35.75, -8.0], [-35.85000000000002, -8.25], [-35.75, -8.5], [-35.97000000000003, -9.03], [-36.5, -9.25], [-37.02999999999997, -9.03], [-37.25, -8.5], [-37.14999999999998, -8.25], [-37.25, -8.0], [-37.02999999999997, -7.47]]]]}, "2022-08-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-40.75, -9.0], [-40.52999999999997, -8.47], [-40.0, -8.25], [-39.75, -8.35], [-39.5, -8.25], [-39.25, -8.35], [-39.0, -8.25], [-38.75, -8.35], [-38.68000000000001, -8.32], [-38.52999999999997, -7.97], [-38.0, -7.75], [-37.75, -7.85], [-37.5, -7.75], [-37.19999999999999, -7.88], [-37.14999999999998, -7.75], [-37.25, -7.5], [-37.02999999999997, -6.97], [-36.5, -6.75], [-35.97000000000003, -6.97], [-35.75, -7.5], [-35.85000000000002, -7.75], [-35.75, -8.0], [-35.85000000000002, -8.25], [-35.81999999999999, -8.32], [-35.47000000000003, -8.47], [-35.25, -9.0], [-35.35000000000002, -9.25], [-35.25, -9.5], [-35.47000000000003, -10.03], [-36.0, -10.25], [-36.25, -10.15], [-36.5, -10.25], [-36.75, -10.15], [-37.0, -10.25], [-37.30000000000001, -10.12], [-37.47000000000003, -10.53], [-37.81999999999999, -10.68], [-37.97000000000003, -11.03], [-38.5, -11.25], [-39.02999999999997, -11.03], [-39.18000000000001, -10.68], [-39.25, -10.65], [-39.5, -10.75], [-40.02999999999997, -10.53], [-40.18000000000001, -10.18], [-40.52999999999997, -10.03], [-40.75, -9.5], [-40.64999999999998, -9.25], [-40.75, -9.0]]]]}, "2022-08-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-40.75, -9.0], [-40.52999999999997, -8.47], [-40.0, -8.25], [-39.75, -8.35], [-39.5, -8.25], [-39.25, -8.35], [-39.0, -8.25], [-38.75, -8.35], [-38.68000000000001, -8.32], [-38.52999999999997, -7.97], [-38.0, -7.75], [-37.75, -7.85], [-37.5, -7.75], [-37.19999999999999, -7.88], [-37.14999999999998, -7.75], [-37.25, -7.5], [-37.02999999999997, -6.97], [-36.5, -6.75], [-35.97000000000003, -6.97], [-35.75, -7.5], [-35.85000000000002, -7.75], [-35.80000000000001, -7.88], [-35.5, -7.75], [-34.97000000000003, -7.97], [-34.75, -8.5], [-34.85000000000002, -8.75], [-34.75, -9.0], [-34.97000000000003, -9.53], [-35.31999999999999, -9.68], [-35.47000000000003, -10.03], [-36.0, -10.25], [-36.25, -10.15], [-36.5, -10.25], [-36.75, -10.15], [-37.0, -10.25], [-37.30000000000001, -10.12], [-37.47000000000003, -10.53], [-37.81999999999999, -10.68], [-37.97000000000003, -11.03], [-38.5, -11.25], [-39.02999999999997, -11.03], [-39.18000000000001, -10.68], [-39.25, -10.65], [-39.5, -10.75], [-40.02999999999997, -10.53], [-40.18000000000001, -10.18], [-40.52999999999997, -10.03], [-40.75, -9.5], [-40.64999999999998, -9.25], [-40.75, -9.0]]]]}, "2022-08-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-40.02999999999997, -8.47], [-39.5, -8.25], [-39.25, -8.35], [-39.0, -8.25], [-38.75, -8.35], [-38.68000000000001, -8.32], [-38.52999999999997, -7.97], [-38.0, -7.75], [-37.75, -7.85], [-37.5, -7.75], [-37.06999999999999, -7.93], [-37.25, -7.5], [-37.02999999999997, -6.97], [-36.5, -6.75], [-35.97000000000003, -6.97], [-35.75, -7.5], [-35.93000000000001, -7.93], [-35.5, -7.75], [-34.97000000000003, -7.97], [-34.75, -8.5], [-34.85000000000002, -8.75], [-34.75, -9.0], [-34.97000000000003, -9.53], [-35.31999999999999, -9.68], [-35.47000000000003, -10.03], [-36.0, -10.25], [-36.25, -10.15], [-36.5, -10.25], [-36.75, -10.15], [-37.0, -10.25], [-37.5, -10.04], [-38.0, -10.25], [-38.52999999999997, -10.03], [-38.68000000000001, -9.68], [-38.75, -9.65], [-38.81999999999999, -9.68], [-38.97000000000003, -10.03], [-39.5, -10.25], [-39.75, -10.15], [-40.0, -10.25], [-40.52999999999997, -10.03], [-40.75, -9.5], [-40.52999999999997, -8.97], [-40.18000000000001, -8.82], [-40.02999999999997, -8.47]], [[-36.81999999999999, -8.32], [-36.5, -8.46], [-36.18000000000001, -8.32], [-36.06999999999999, -8.07], [-36.5, -8.25], [-36.93000000000001, -8.07], [-36.81999999999999, -8.32]]]]}, "2022-08-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-36.25, -8.5], [-36.02999999999997, -7.97], [-35.5, -7.75], [-34.97000000000003, -7.97], [-34.75, -8.5], [-34.85000000000002, -8.75], [-34.75, -9.0], [-34.97000000000003, -9.53], [-35.5, -9.75], [-36.02999999999997, -9.53], [-36.25, -9.0], [-36.14999999999998, -8.75], [-36.25, -8.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.1392047935295864}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.4249845486159252}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.402763987742333, 21.573315372574484, 21.616767157109507, 21.591973343455493, 21.56128578150532, 21.623289794506263, 21.32483461048298, 21.5166952562833, 22.001373273012916, 21.736520442249912]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.378930203909874, 21.561001946601493, 21.578866849369035, 21.591973343455493, 19.247246595642935, 19.43048707029135, 18.64267825058431, 19.071602878713577, 20.271890598300786, 21.083491461413132]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5644791739157142, -1.3388081000701106, -1.2840588024883175, -1.2840636312070046, -1.3551824991124704, -1.4179253792396707, -1.6169190044691595, -1.4348863702820995, -1.2221621711060426, -1.0016363889497768]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.6156716856090725, -1.3496350004705278, -1.3015957003291874, -1.2840636312070046, -1.5115862511653972, -1.6919473845403559, -2.1392047935295864, -1.981676652007991, -1.4854252094894491, -1.0173754682077742]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6434385873465236, -1.3658684779372798, -1.3154621051793263, -1.3710943657086685, -1.419128852021448, -1.4215768808010452, -1.6386905317444644, -1.553338592247657, -1.369648979933172, -1.5882541842516908]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6535890647544838, -1.3849091141290677, -1.3643574574252422, -1.3710943657086685, -1.6596718066099765, -1.642710239115682, -2.1368583935193897, -2.0359496468325675, -1.5349407976850513, -1.6498665944719986]}}