{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:10:37.288175", "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": "2018-Apr-08_to_2018-Apr-12_321.0_-17.5"}, "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": 2018040000431}, "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": "April 08 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 12 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 61284.05634798324}, "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", "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": ["South Atlantic Ocean"]}, "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": -17.5}, "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": 321.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "321.0\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": 324.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -21.25}, "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": {"2018-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-39.75, -19.5], [-39.53, -18.97], [-39.0, -18.75], [-38.75, -18.85], [-38.5, -18.75], [-38.25, -18.85], [-38.0, -18.75], [-37.47, -18.97], [-37.32, -19.32], [-36.97, -19.47], [-36.82, -19.82], [-36.75, -19.85], [-36.5, -19.75], [-35.97, -19.97], [-35.82, -20.32], [-35.47, -20.47], [-35.25, -21.0], [-35.47, -21.53], [-36.0, -21.75], [-36.25, -21.65], [-36.5, -21.75], [-37.03, -21.53], [-37.18, -21.18], [-37.25, -21.15], [-37.5, -21.25], [-38.03, -21.03], [-38.18, -20.68], [-38.25, -20.65], [-38.5, -20.75], [-39.03, -20.53], [-39.18, -20.18], [-39.53, -20.03], [-39.75, -19.5]]]]}, "2018-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-40.25, -18.0], [-40.03, -17.47], [-39.68, -17.32], [-39.65, -17.25], [-39.75, -17.0], [-39.53, -16.47], [-39.0, -16.25], [-38.47, -16.47], [-38.25, -17.0], [-38.35, -17.25], [-38.32, -17.32], [-38.25, -17.35], [-38.0, -17.25], [-37.47, -17.47], [-37.32, -17.82], [-36.97, -17.97], [-36.75, -18.5], [-36.97, -19.03], [-37.37, -19.2], [-37.32, -19.32], [-36.97, -19.47], [-36.82, -19.82], [-36.75, -19.85], [-36.5, -19.75], [-35.97, -19.97], [-35.82, -20.32], [-35.47, -20.47], [-35.25, -21.0], [-35.47, -21.53], [-36.0, -21.75], [-36.25, -21.65], [-36.5, -21.75], [-37.03, -21.53], [-37.18, -21.18], [-37.25, -21.15], [-37.5, -21.25], [-38.03, -21.03], [-38.18, -20.68], [-38.25, -20.65], [-38.5, -20.75], [-39.03, -20.53], [-39.18, -20.18], [-39.53, -20.03], [-39.75, -19.5], [-39.65, -19.25], [-39.75, -19.0], [-39.65, -18.75], [-39.68, -18.68], [-40.03, -18.53], [-40.25, -18.0]]]]}, "2018-04-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-40.25, -18.0], [-40.03, -17.47], [-39.68, -17.32], [-39.65, -17.25], [-39.75, -17.0], [-39.53, -16.47], [-39.0, -16.25], [-38.47, -16.47], [-38.25, -17.0], [-38.35, -17.25], [-38.32, -17.32], [-38.25, -17.35], [-38.0, -17.25], [-37.47, -17.47], [-37.32, -17.82], [-36.97, -17.97], [-36.75, -18.5], [-36.97, -19.03], [-37.37, -19.2], [-37.32, -19.32], [-36.97, -19.47], [-36.82, -19.82], [-36.75, -19.85], [-36.5, -19.75], [-35.97, -19.97], [-35.82, -20.32], [-35.47, -20.47], [-35.25, -21.0], [-35.47, -21.53], [-36.0, -21.75], [-36.25, -21.65], [-36.5, -21.75], [-37.03, -21.53], [-37.18, -21.18], [-37.25, -21.15], [-37.5, -21.25], [-38.03, -21.03], [-38.18, -20.68], [-38.25, -20.65], [-38.5, -20.75], [-39.03, -20.53], [-39.18, -20.18], [-39.53, -20.03], [-39.75, -19.5], [-39.65, -19.25], [-39.75, -19.0], [-39.65, -18.75], [-39.68, -18.68], [-40.03, -18.53], [-40.25, -18.0]]]]}, "2018-04-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-40.25, -18.0], [-40.03, -17.47], [-39.68, -17.32], [-39.65, -17.25], [-39.75, -17.0], [-39.53, -16.47], [-39.0, -16.25], [-38.47, -16.47], [-38.25, -17.0], [-38.35, -17.25], [-38.32, -17.32], [-38.25, -17.35], [-38.0, -17.25], [-37.47, -17.47], [-37.32, -17.82], [-36.97, -17.97], [-36.75, -18.5], [-36.97, -19.03], [-37.5, -19.25], [-37.8, -19.12], [-37.85, -19.25], [-37.75, -19.5], [-37.97, -20.03], [-38.5, -20.25], [-38.75, -20.15], [-39.0, -20.25], [-39.53, -20.03], [-39.75, -19.5], [-39.65, -19.25], [-39.75, -19.0], [-39.65, -18.75], [-39.68, -18.68], [-40.03, -18.53], [-40.25, -18.0]]]]}, "2018-04-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-39.75, -17.0], [-39.53, -16.47], [-39.0, -16.25], [-38.47, -16.47], [-38.25, -17.0], [-38.35, -17.25], [-38.25, -17.5], [-38.35, -17.75], [-38.25, -18.0], [-38.47, -18.53], [-39.0, -18.75], [-39.25, -18.65], [-39.5, -18.75], [-40.03, -18.53], [-40.25, -18.0], [-40.03, -17.47], [-39.68, -17.32], [-39.65, -17.25], [-39.75, -17.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.8123973572408545}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.2610284649430834}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.983295799763823, 24.72871687693123, 24.720455894194572, 24.842521007585958, 24.74419168878279]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.79019988780368, 24.40937720836007, 24.4123696115484, 24.153605483208537, 24.341575651908215]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.0980939428956058, -1.354668312513013, -1.3230281313805894, -1.1713074053987402, -1.16115413066764]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.2769016521588696, -1.6452774509664323, -1.6022888308947927, -1.8123973572408545, -1.5988499124255213]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4600704692556838, -1.8292725147586935, -1.816379677230759, -1.5883467204040613, -1.5148324734145968]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6959355223140413, -2.3073036640267994, -2.1872821775923406, -1.9361655534432773, -1.7052727521225195]}}