{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:23:32.416397", "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-08_to_2021-Mar-13_304.0_-2.0"}, "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": 2021030000355}, "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 08 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 13 2021"}, "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": 385750.67367399327}, "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"]}, "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": -2.0}, "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": 304.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "304.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 296.75}, "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": -6.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 0.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-03-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.5, -1.75], [-59.97, -1.97], [-59.75, -2.5], [-59.97, -3.03], [-60.5, -3.25], [-61.03, -3.03], [-61.25, -2.5], [-61.03, -1.97], [-60.5, -1.75]]]]}, "2021-03-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.68, -4.82], [-62.65, -4.75], [-62.75, -4.5], [-62.65, -4.25], [-62.68, -4.18], [-63.03, -4.03], [-63.25, -3.5], [-63.15, -3.25], [-63.25, -3.0], [-63.15, -2.75], [-63.25, -2.5], [-63.15, -2.25], [-63.25, -2.0], [-63.15, -1.75], [-63.25, -1.5], [-63.03, -0.97], [-62.5, -0.75], [-62.25, -0.85], [-62.0, -0.75], [-61.47, -0.97], [-61.32, -1.32], [-60.97, -1.47], [-60.82, -1.82], [-60.75, -1.85], [-60.5, -1.75], [-60.25, -1.85], [-60.12, -1.8], [-60.25, -1.5], [-60.15, -1.25], [-60.25, -1.0], [-60.03, -0.47], [-59.68, -0.32], [-59.65, -0.25], [-59.75, 0.0], [-59.53, 0.53], [-59.18, 0.68], [-59.03, 1.03], [-58.5, 1.25], [-58.25, 1.15], [-58.0, 1.25], [-57.47, 1.03], [-57.32, 0.68], [-56.97, 0.53], [-56.82, 0.18], [-56.75, 0.15], [-56.5, 0.25], [-56.0, 0.04], [-55.5, 0.25], [-54.97, 0.03], [-54.8, -0.38], [-54.5, -0.25], [-54.25, -0.35], [-54.0, -0.25], [-53.47, -0.47], [-53.25, -1.0], [-53.35, -1.25], [-53.25, -1.5], [-53.47, -2.03], [-53.82, -2.18], [-53.97, -2.53], [-54.5, -2.75], [-54.75, -2.65], [-54.82, -2.68], [-54.85, -2.75], [-54.75, -3.0], [-54.85, -3.25], [-54.75, -3.5], [-54.85, -3.75], [-54.75, -4.0], [-54.97, -4.53], [-55.5, -4.75], [-56.03, -4.53], [-56.18, -4.18], [-56.25, -4.15], [-56.5, -4.25], [-56.8, -4.12], [-56.97, -4.53], [-57.5, -4.75], [-57.75, -4.65], [-58.0, -4.75], [-58.25, -4.65], [-58.32, -4.68], [-58.46, -5.0], [-58.25, -5.5], [-58.35, -5.75], [-58.25, -6.0], [-58.47, -6.53], [-59.0, -6.75], [-59.53, -6.53], [-59.68, -6.18], [-59.75, -6.15], [-60.0, -6.25], [-60.25, -6.15], [-60.32, -6.18], [-60.47, -6.53], [-60.82, -6.68], [-60.97, -7.03], [-61.5, -7.25], [-62.03, -7.03], [-62.18, -6.68], [-62.25, -6.65], [-62.5, -6.75], [-62.75, -6.65], [-63.0, -6.75], [-63.53, -6.53], [-63.75, -6.0], [-63.53, -5.47], [-63.18, -5.32], [-63.03, -4.97], [-62.68, -4.82]]]]}, "2021-03-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.68, -4.82], [-62.65, -4.75], [-62.75, -4.5], [-62.65, -4.25], [-62.68, -4.18], [-63.03, -4.03], [-63.25, -3.5], [-63.15, -3.25], [-63.25, -3.0], [-63.15, -2.75], [-63.25, -2.5], [-63.15, -2.25], [-63.25, -2.0], [-63.15, -1.75], [-63.25, -1.5], [-63.03, -0.97], [-62.5, -0.75], [-62.25, -0.85], [-62.0, -0.75], [-61.47, -0.97], [-61.32, -1.32], [-60.97, -1.47], [-60.82, -1.82], [-60.75, -1.85], [-60.5, -1.75], [-60.25, -1.85], [-60.12, -1.8], [-60.25, -1.5], [-60.15, -1.25], [-60.25, -1.0], [-60.03, -0.47], [-59.68, -0.32], [-59.65, -0.25], [-59.75, 0.0], [-59.53, 0.53], [-59.18, 0.68], [-59.03, 1.03], [-58.5, 1.25], [-58.25, 1.15], [-58.0, 1.25], [-57.47, 1.03], [-57.32, 0.68], [-56.97, 0.53], [-56.82, 0.18], [-56.75, 0.15], [-56.5, 0.25], [-56.0, 0.04], [-55.5, 0.25], [-54.97, 0.03], [-54.8, -0.38], [-54.5, -0.25], [-54.25, -0.35], [-54.0, -0.25], [-53.47, -0.47], [-53.25, -1.0], [-53.35, -1.25], [-53.25, -1.5], [-53.47, -2.03], [-53.82, -2.18], [-53.97, -2.53], [-54.5, -2.75], [-54.75, -2.65], [-54.82, -2.68], [-54.85, -2.75], [-54.75, -3.0], [-54.85, -3.25], [-54.82, -3.32], [-54.47, -3.47], [-54.25, -4.0], [-54.47, -4.53], [-55.0, -4.75], [-55.25, -4.65], [-55.5, -4.75], [-56.03, -4.53], [-56.18, -4.18], [-56.25, -4.15], [-56.5, -4.25], [-56.8, -4.12], [-56.97, -4.53], [-57.5, -4.75], [-57.75, -4.65], [-58.0, -4.75], [-58.25, -4.65], [-58.32, -4.68], [-58.46, -5.0], [-58.25, -5.5], [-58.35, -5.75], [-58.25, -6.0], [-58.47, -6.53], [-59.0, -6.75], [-59.53, -6.53], [-59.68, -6.18], [-59.75, -6.15], [-60.0, -6.25], [-60.25, -6.15], [-60.32, -6.18], [-60.47, -6.53], [-60.82, -6.68], [-60.97, -7.03], [-61.5, -7.25], [-62.03, -7.03], [-62.18, -6.68], [-62.25, -6.65], [-62.5, -6.75], [-62.75, -6.65], [-63.0, -6.75], [-63.53, -6.53], [-63.75, -6.0], [-63.53, -5.47], [-63.18, -5.32], [-63.03, -4.97], [-62.68, -4.82]]]]}, "2021-03-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.68, -4.82], [-62.65, -4.75], [-62.75, -4.5], [-62.65, -4.25], [-62.68, -4.18], [-63.03, -4.03], [-63.25, -3.5], [-63.15, -3.25], [-63.25, -3.0], [-63.15, -2.75], [-63.25, -2.5], [-63.15, -2.25], [-63.25, -2.0], [-63.15, -1.75], [-63.25, -1.5], [-63.03, -0.97], [-62.5, -0.75], [-62.25, -0.85], [-62.0, -0.75], [-61.47, -0.97], [-61.32, -1.32], [-60.97, -1.47], [-60.82, -1.82], [-60.75, -1.85], [-60.5, -1.75], [-60.25, -1.85], [-60.12, -1.8], [-60.25, -1.5], [-60.15, -1.25], [-60.25, -1.0], [-60.03, -0.47], [-59.68, -0.32], [-59.65, -0.25], [-59.75, 0.0], [-59.53, 0.53], [-59.18, 0.68], [-59.03, 1.03], [-58.5, 1.25], [-58.25, 1.15], [-58.0, 1.25], [-57.47, 1.03], [-57.32, 0.68], [-56.97, 0.53], [-56.82, 0.18], [-56.75, 0.15], [-56.5, 0.25], [-56.0, 0.04], [-55.5, 0.25], [-54.97, 0.03], [-54.8, -0.38], [-54.5, -0.25], [-54.25, -0.35], [-54.0, -0.25], [-53.47, -0.47], [-53.25, -1.0], [-53.35, -1.25], [-53.25, -1.5], [-53.47, -2.03], [-53.82, -2.18], [-53.97, -2.53], [-54.5, -2.75], [-54.75, -2.65], [-54.82, -2.68], [-54.85, -2.75], [-54.75, -3.0], [-54.85, -3.25], [-54.82, -3.32], [-54.47, -3.47], [-54.25, -4.0], [-54.47, -4.53], [-55.0, -4.75], [-55.25, -4.65], [-55.5, -4.75], [-56.03, -4.53], [-56.18, -4.18], [-56.25, -4.15], [-56.5, -4.25], [-56.8, -4.12], [-56.97, -4.53], [-57.5, -4.75], [-57.75, -4.65], [-58.0, -4.75], [-58.25, -4.65], [-58.32, -4.68], [-58.46, -5.0], [-58.25, -5.5], [-58.35, -5.75], [-58.25, -6.0], [-58.47, -6.53], [-59.0, -6.75], [-59.53, -6.53], [-59.68, -6.18], [-59.75, -6.15], [-60.0, -6.25], [-60.25, -6.15], [-60.32, -6.18], [-60.47, -6.53], [-60.82, -6.68], [-60.97, -7.03], [-61.5, -7.25], [-62.03, -7.03], [-62.18, -6.68], [-62.25, -6.65], [-62.5, -6.75], [-62.75, -6.65], [-63.0, -6.75], [-63.53, -6.53], [-63.75, -6.0], [-63.53, -5.47], [-63.18, -5.32], [-63.03, -4.97], [-62.68, -4.82]]]]}, "2021-03-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.03, -5.53], [-62.25, -5.0], [-62.03, -4.47], [-61.5, -4.25], [-60.97, -4.47], [-60.75, -5.0], [-60.97, -5.53], [-61.5, -5.75], [-62.03, -5.53]]], [[[-61.97, -1.97], [-61.75, -2.5], [-61.85, -2.75], [-61.75, -3.0], [-61.97, -3.53], [-62.5, -3.75], [-63.03, -3.53], [-63.25, -3.0], [-63.15, -2.75], [-63.25, -2.5], [-63.03, -1.97], [-62.5, -1.75], [-61.97, -1.97]]], [[[-58.25, 1.15], [-58.0, 1.25], [-57.47, 1.03], [-57.32, 0.68], [-56.97, 0.53], [-56.82, 0.18], [-56.75, 0.15], [-56.5, 0.25], [-56.0, 0.04], [-55.5, 0.25], [-54.97, 0.03], [-54.8, -0.38], [-54.5, -0.25], [-54.25, -0.35], [-54.0, -0.25], [-53.47, -0.47], [-53.25, -1.0], [-53.35, -1.25], [-53.25, -1.5], [-53.47, -2.03], [-53.82, -2.18], [-53.97, -2.53], [-54.5, -2.75], [-54.75, -2.65], [-54.82, -2.68], [-54.85, -2.75], [-54.75, -3.0], [-54.85, -3.25], [-54.82, -3.32], [-54.47, -3.47], [-54.25, -4.0], [-54.47, -4.53], [-55.0, -4.75], [-55.25, -4.65], [-55.5, -4.75], [-56.03, -4.53], [-56.18, -4.18], [-56.25, -4.15], [-56.5, -4.25], [-57.03, -4.03], [-57.18, -3.68], [-57.53, -3.53], [-57.75, -3.0], [-57.65, -2.75], [-57.68, -2.68], [-58.03, -2.53], [-58.18, -2.18], [-58.53, -2.03], [-58.75, -1.5], [-58.65, -1.25], [-58.75, -1.0], [-58.65, -0.75], [-58.68, -0.68], [-59.03, -0.53], [-59.25, 0.0], [-59.15, 0.25], [-59.25, 0.5], [-59.03, 1.03], [-58.5, 1.25], [-58.25, 1.15]]]]}, "2021-03-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-55.53, -4.53], [-55.75, -4.0], [-55.53, -3.47], [-55.0, -3.25], [-54.47, -3.47], [-54.25, -4.0], [-54.47, -4.53], [-55.0, -4.75], [-55.53, -4.53]]], [[[-56.0, -0.75], [-55.5, -0.96], [-55.0, -0.75], [-54.75, -0.85], [-54.5, -0.75], [-53.97, -0.97], [-53.75, -1.5], [-53.85, -1.75], [-53.75, -2.0], [-53.97, -2.53], [-54.5, -2.75], [-55.03, -2.53], [-55.18, -2.18], [-55.3, -2.12], [-55.47, -2.53], [-56.0, -2.75], [-56.53, -2.53], [-56.75, -2.0], [-56.65, -1.75], [-56.75, -1.5], [-56.53, -0.97], [-56.0, -0.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.8939224908001506}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.8500345958216469}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.52086413087602, 23.969010026762817, 23.956229068378775, 23.794408116002273, 23.673511409022865, 24.699671378824576]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.52086413087602, 21.73711572724835, 22.106091003334825, 22.390039056620765, 21.619506644282012, 23.721036624967155]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.4304578086483843, -1.7967835368267076, -1.7998291045559367, -1.9622511098437836, -1.909094613267389, -1.2364228267723927]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.4304578086483843, -2.4261941698613327, -2.4533257945009836, -2.8939224908001506, -2.5240397099526604, -1.2938405420441086]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3812206194784211, -1.7855516791560797, -1.84942844170293, -1.9785937609034259, -1.8519766494720238, -1.2831404482650688]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3812206194784211, -2.3536684713619858, -3.161320224606203, -2.9741020092586172, -2.4564359611467745, -1.3999613201517607]}}