{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:26:28.599604", "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-Jul-19_to_2021-Jul-21_307.5_-19.5"}, "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": 2021070000713}, "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": "July 19 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 21 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 61358.74442852709}, "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": ["S.E.South-America", "South-American-Monsoon"]}, "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": -19.5}, "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": 307.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "307.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 306.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 310.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -20.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -16.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-07-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-53.25, -19.0], [-53.15, -18.75], [-53.25, -18.5], [-53.15, -18.25], [-53.25, -18.0], [-53.15, -17.75], [-53.25, -17.5], [-53.03, -16.97], [-52.5, -16.75], [-52.25, -16.85], [-52.18, -16.82], [-52.03, -16.47], [-51.5, -16.25], [-50.97, -16.47], [-50.75, -17.0], [-50.97, -17.53], [-51.32, -17.68], [-51.35, -17.75], [-51.25, -18.0], [-51.35, -18.25], [-51.32, -18.32], [-51.25, -18.35], [-51.0, -18.25], [-50.47, -18.47], [-50.32, -18.82], [-49.97, -18.97], [-49.82, -19.32], [-49.47, -19.47], [-49.25, -20.0], [-49.47, -20.53], [-50.0, -20.75], [-50.25, -20.65], [-50.5, -20.75], [-50.75, -20.65], [-51.0, -20.75], [-51.3, -20.62], [-51.47, -21.03], [-52.0, -21.25], [-52.53, -21.03], [-52.7, -20.62], [-53.0, -20.75], [-53.53, -20.53], [-53.75, -20.0], [-53.53, -19.47], [-53.18, -19.32], [-53.15, -19.25], [-53.25, -19.0]]]]}, "2021-07-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-53.25, -19.0], [-53.15, -18.75], [-53.25, -18.5], [-53.15, -18.25], [-53.25, -18.0], [-53.15, -17.75], [-53.25, -17.5], [-53.03, -16.97], [-52.5, -16.75], [-52.25, -16.85], [-52.18, -16.82], [-52.03, -16.47], [-51.5, -16.25], [-50.97, -16.47], [-50.75, -17.0], [-50.97, -17.53], [-51.32, -17.68], [-51.35, -17.75], [-51.25, -18.0], [-51.35, -18.25], [-51.32, -18.32], [-51.25, -18.35], [-51.0, -18.25], [-50.47, -18.47], [-50.32, -18.82], [-49.97, -18.97], [-49.82, -19.32], [-49.47, -19.47], [-49.25, -20.0], [-49.47, -20.53], [-50.0, -20.75], [-50.25, -20.65], [-50.5, -20.75], [-50.75, -20.65], [-51.0, -20.75], [-51.3, -20.62], [-51.47, -21.03], [-52.0, -21.25], [-52.53, -21.03], [-52.7, -20.62], [-53.0, -20.75], [-53.53, -20.53], [-53.75, -20.0], [-53.53, -19.47], [-53.18, -19.32], [-53.15, -19.25], [-53.25, -19.0]]]]}, "2021-07-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-53.25, -19.0], [-53.15, -18.75], [-53.25, -18.5], [-53.15, -18.25], [-53.25, -18.0], [-53.15, -17.75], [-53.25, -17.5], [-53.03, -16.97], [-52.5, -16.75], [-52.25, -16.85], [-52.18, -16.82], [-52.03, -16.47], [-51.5, -16.25], [-50.97, -16.47], [-50.75, -17.0], [-50.97, -17.53], [-51.32, -17.68], [-51.35, -17.75], [-51.25, -18.0], [-51.35, -18.25], [-51.32, -18.32], [-51.25, -18.35], [-51.0, -18.25], [-50.47, -18.47], [-50.32, -18.82], [-49.97, -18.97], [-49.82, -19.32], [-49.47, -19.47], [-49.25, -20.0], [-49.47, -20.53], [-50.0, -20.75], [-50.25, -20.65], [-50.5, -20.75], [-50.75, -20.65], [-51.0, -20.75], [-51.3, -20.62], [-51.47, -21.03], [-52.0, -21.25], [-52.53, -21.03], [-52.7, -20.62], [-53.0, -20.75], [-53.53, -20.53], [-53.75, -20.0], [-53.53, -19.47], [-53.18, -19.32], [-53.15, -19.25], [-53.25, -19.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.07769216641799}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.505410476201588}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.106814589082148, 13.787665556735476, 17.128836741624582]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.653334926446803, 11.484689135409837, 15.263571050245616]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.352260749595486, -7.713653176704283, -4.450317502304994]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-9.791934073000789, -10.07769216641799, -6.392663077232328]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.6156816213911163, -2.7437298379428765, -1.5833314208182976]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.804481694405793, -3.0596587999737404, -1.9221800867825583]}}