{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:32:04.022563", "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-30_to_2022-Sep-02_322.5_-7.5"}, "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": 2022080001213}, "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 30 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 02 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 92000.54340472555}, "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.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": -7.5}, "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": 322.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "322.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 320.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 325.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -8.75}, "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": {"2022-08-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-38.75, -7.5], [-38.53, -6.97], [-38.0, -6.75], [-37.75, -6.85], [-37.5, -6.75], [-36.97, -6.97], [-36.82, -7.32], [-36.47, -7.47], [-36.25, -8.0], [-36.35, -8.25], [-36.25, -8.5], [-36.47, -9.03], [-37.0, -9.25], [-37.53, -9.03], [-37.68, -8.68], [-38.03, -8.53], [-38.18, -8.18], [-38.53, -8.03], [-38.75, -7.5]]]]}, "2022-08-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-40.03, -5.47], [-39.5, -5.25], [-39.25, -5.35], [-39.0, -5.25], [-38.5, -5.46], [-38.0, -5.25], [-37.47, -5.47], [-37.32, -5.82], [-37.25, -5.85], [-37.0, -5.75], [-36.75, -5.85], [-36.5, -5.75], [-35.97, -5.97], [-35.82, -6.32], [-35.47, -6.47], [-35.25, -7.0], [-35.35, -7.25], [-35.32, -7.32], [-35.25, -7.35], [-35.0, -7.25], [-34.47, -7.47], [-34.25, -8.0], [-34.47, -8.53], [-34.82, -8.68], [-34.97, -9.03], [-35.5, -9.25], [-36.03, -9.03], [-36.18, -8.68], [-36.25, -8.65], [-36.32, -8.68], [-36.47, -9.03], [-37.0, -9.25], [-37.53, -9.03], [-37.68, -8.68], [-38.03, -8.53], [-38.18, -8.18], [-38.53, -8.03], [-38.68, -7.68], [-38.75, -7.65], [-39.0, -7.75], [-39.53, -7.53], [-39.68, -7.18], [-40.03, -7.03], [-40.25, -6.5], [-40.15, -6.25], [-40.25, -6.0], [-40.03, -5.47]]]]}, "2022-09-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-40.03, -5.47], [-39.5, -5.25], [-39.25, -5.35], [-39.0, -5.25], [-38.5, -5.46], [-38.0, -5.25], [-37.47, -5.47], [-37.32, -5.82], [-37.25, -5.85], [-37.0, -5.75], [-36.75, -5.85], [-36.5, -5.75], [-35.97, -5.97], [-35.82, -6.32], [-35.47, -6.47], [-35.25, -7.0], [-35.35, -7.25], [-35.32, -7.32], [-35.25, -7.35], [-35.0, -7.25], [-34.47, -7.47], [-34.25, -8.0], [-34.47, -8.53], [-34.82, -8.68], [-34.97, -9.03], [-35.5, -9.25], [-36.03, -9.03], [-36.18, -8.68], [-36.25, -8.65], [-36.32, -8.68], [-36.47, -9.03], [-37.0, -9.25], [-37.53, -9.03], [-37.68, -8.68], [-38.03, -8.53], [-38.18, -8.18], [-38.53, -8.03], [-38.68, -7.68], [-38.75, -7.65], [-39.0, -7.75], [-39.53, -7.53], [-39.68, -7.18], [-40.03, -7.03], [-40.25, -6.5], [-40.15, -6.25], [-40.25, -6.0], [-40.03, -5.47]]]]}, "2022-09-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-40.03, -5.47], [-39.5, -5.25], [-39.25, -5.35], [-39.0, -5.25], [-38.5, -5.46], [-38.0, -5.25], [-37.47, -5.47], [-37.32, -5.82], [-37.25, -5.85], [-37.0, -5.75], [-36.75, -5.85], [-36.5, -5.75], [-35.97, -5.97], [-35.82, -6.32], [-35.47, -6.47], [-35.25, -7.0], [-35.35, -7.25], [-35.32, -7.32], [-35.25, -7.35], [-35.0, -7.25], [-34.47, -7.47], [-34.25, -8.0], [-34.47, -8.53], [-34.82, -8.68], [-34.97, -9.03], [-35.5, -9.25], [-36.03, -9.03], [-36.18, -8.68], [-36.25, -8.65], [-36.5, -8.75], [-36.75, -8.65], [-37.0, -8.75], [-37.25, -8.65], [-37.5, -8.75], [-38.03, -8.53], [-38.18, -8.18], [-38.53, -8.03], [-38.68, -7.68], [-38.75, -7.65], [-39.0, -7.75], [-39.53, -7.53], [-39.68, -7.18], [-40.03, -7.03], [-40.25, -6.5], [-40.15, -6.25], [-40.25, -6.0], [-40.03, -5.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.29220894708601}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5418988192514436}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.769921586498015, 23.71683378325116, 23.928415592943452, 24.545735797696693]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.840228252699887, 19.4411726196102, 20.056298210629905, 21.323298498570125]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.403499160537183, -1.8222100070189735, -1.6474301927322548, -1.166613352221136]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.690721239808795, -3.29220894708601, -2.826272380489911, -1.6291321849951146]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5205497635954228, -2.3840675692095923, -2.1497504624862676, -1.5802020245195048]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6801230441251778, -3.551993025337388, -2.861355688601953, -2.1380234990169846]}}