{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:30:15.348661", "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-Mar-11_to_2022-Mar-13_304.5_-23.0"}, "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": 2022030000355}, "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 11 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 13 2022"}, "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": 51233.951629299496}, "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", "Paraguay"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.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": -23.0}, "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": 304.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "304.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 303.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 306.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -24.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -21.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-03-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.53, -21.47], [-56.0, -21.25], [-55.75, -21.35], [-55.5, -21.25], [-55.25, -21.35], [-55.0, -21.25], [-54.47, -21.47], [-54.32, -21.82], [-54.25, -21.85], [-54.0, -21.75], [-53.47, -21.97], [-53.25, -22.5], [-53.35, -22.75], [-53.32, -22.82], [-52.97, -22.97], [-52.75, -23.5], [-52.85, -23.75], [-52.75, -24.0], [-52.97, -24.53], [-53.5, -24.75], [-53.75, -24.65], [-54.0, -24.75], [-54.25, -24.65], [-54.5, -24.75], [-55.03, -24.53], [-55.25, -24.0], [-55.15, -23.75], [-55.18, -23.68], [-55.25, -23.65], [-55.5, -23.75], [-56.03, -23.53], [-56.18, -23.18], [-56.53, -23.03], [-56.75, -22.5], [-56.65, -22.25], [-56.75, -22.0], [-56.53, -21.47]]]]}, "2022-03-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.53, -21.47], [-56.0, -21.25], [-55.75, -21.35], [-55.5, -21.25], [-55.25, -21.35], [-55.0, -21.25], [-54.47, -21.47], [-54.32, -21.82], [-54.25, -21.85], [-54.0, -21.75], [-53.47, -21.97], [-53.25, -22.5], [-53.35, -22.75], [-53.32, -22.82], [-52.97, -22.97], [-52.75, -23.5], [-52.85, -23.75], [-52.75, -24.0], [-52.97, -24.53], [-53.5, -24.75], [-53.75, -24.65], [-54.0, -24.75], [-54.25, -24.65], [-54.5, -24.75], [-55.03, -24.53], [-55.25, -24.0], [-55.15, -23.75], [-55.18, -23.68], [-55.25, -23.65], [-55.5, -23.75], [-56.03, -23.53], [-56.18, -23.18], [-56.53, -23.03], [-56.75, -22.5], [-56.65, -22.25], [-56.75, -22.0], [-56.53, -21.47]]]]}, "2022-03-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.53, -21.47], [-56.0, -21.25], [-55.75, -21.35], [-55.5, -21.25], [-55.25, -21.35], [-55.0, -21.25], [-54.47, -21.47], [-54.32, -21.82], [-54.25, -21.85], [-54.0, -21.75], [-53.47, -21.97], [-53.25, -22.5], [-53.35, -22.75], [-53.32, -22.82], [-52.97, -22.97], [-52.75, -23.5], [-52.85, -23.75], [-52.75, -24.0], [-52.97, -24.53], [-53.5, -24.75], [-53.75, -24.65], [-54.0, -24.75], [-54.25, -24.65], [-54.5, -24.75], [-55.03, -24.53], [-55.25, -24.0], [-55.15, -23.75], [-55.18, -23.68], [-55.25, -23.65], [-55.5, -23.75], [-56.03, -23.53], [-56.18, -23.18], [-56.53, -23.03], [-56.75, -22.5], [-56.65, -22.25], [-56.75, -22.0], [-56.53, -21.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.3200462646224764}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.5635651515371602}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.883114844149418, 22.654696381045937, 23.234430795550907]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.56305630610035, 21.48327483075701, 22.491230181049787]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.639252440998411, -2.840080048809682, -2.211362964803388]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.259192035428214, -3.3200462646224764, -2.5231892029252094]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6106737161620872, -1.7261534686890667, -1.3483768023603986]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9846461947365333, -2.01238571193887, -1.5379769422921685]}}