{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:48.264347", "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": "2015-Apr-30_to_2015-May-03_321.0_-16.0"}, "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": 2015040001104}, "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 30 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 03 2015"}, "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": 59345.33596351644}, "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": ["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": -16.0}, "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": 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": 319.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 322.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -17.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -14.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-04-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-41.25, -15.5], [-41.03, -14.97], [-40.68, -14.82], [-40.53, -14.47], [-40.0, -14.25], [-39.75, -14.35], [-39.5, -14.25], [-39.25, -14.35], [-39.0, -14.25], [-38.47, -14.47], [-38.25, -15.0], [-38.35, -15.25], [-38.25, -15.5], [-38.35, -15.75], [-38.25, -16.0], [-38.47, -16.53], [-38.82, -16.68], [-38.97, -17.03], [-39.5, -17.25], [-40.03, -17.03], [-40.18, -16.68], [-40.53, -16.53], [-40.68, -16.18], [-41.03, -16.03], [-41.25, -15.5]]]]}, "2015-05-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-41.25, -15.5], [-41.03, -14.97], [-40.68, -14.82], [-40.53, -14.47], [-40.0, -14.25], [-39.75, -14.35], [-39.5, -14.25], [-39.25, -14.35], [-39.0, -14.25], [-38.47, -14.47], [-38.25, -15.0], [-38.35, -15.25], [-38.25, -15.5], [-38.35, -15.75], [-38.32, -15.82], [-38.25, -15.85], [-38.0, -15.75], [-37.47, -15.97], [-37.32, -16.32], [-36.97, -16.47], [-36.75, -17.0], [-36.97, -17.53], [-37.32, -17.68], [-37.47, -18.03], [-38.0, -18.25], [-38.25, -18.15], [-38.5, -18.25], [-38.75, -18.15], [-39.0, -18.25], [-39.53, -18.03], [-39.75, -17.5], [-39.65, -17.25], [-39.68, -17.18], [-40.03, -17.03], [-40.18, -16.68], [-40.53, -16.53], [-40.68, -16.18], [-41.03, -16.03], [-41.25, -15.5]]]]}, "2015-05-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-41.25, -15.5], [-41.03, -14.97], [-40.68, -14.82], [-40.53, -14.47], [-40.0, -14.25], [-39.75, -14.35], [-39.5, -14.25], [-39.25, -14.35], [-39.0, -14.25], [-38.47, -14.47], [-38.25, -15.0], [-38.35, -15.25], [-38.25, -15.5], [-38.35, -15.75], [-38.32, -15.82], [-38.25, -15.85], [-38.0, -15.75], [-37.47, -15.97], [-37.32, -16.32], [-36.97, -16.47], [-36.75, -17.0], [-36.97, -17.53], [-37.32, -17.68], [-37.47, -18.03], [-38.0, -18.25], [-38.25, -18.15], [-38.5, -18.25], [-38.75, -18.15], [-39.0, -18.25], [-39.53, -18.03], [-39.75, -17.5], [-39.65, -17.25], [-39.68, -17.18], [-40.03, -17.03], [-40.18, -16.68], [-40.53, -16.53], [-40.68, -16.18], [-41.03, -16.03], [-41.25, -15.5]]]]}, "2015-05-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-39.53, -16.47], [-39.18, -16.32], [-39.03, -15.97], [-38.5, -15.75], [-38.25, -15.85], [-38.0, -15.75], [-37.47, -15.97], [-37.32, -16.32], [-36.97, -16.47], [-36.75, -17.0], [-36.97, -17.53], [-37.32, -17.68], [-37.47, -18.03], [-38.0, -18.25], [-38.25, -18.15], [-38.5, -18.25], [-38.75, -18.15], [-39.0, -18.25], [-39.53, -18.03], [-39.75, -17.5], [-39.65, -17.25], [-39.75, -17.0], [-39.53, -16.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.2861727518301223}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5242226183297427}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.481014849574137, 23.41327100482465, 23.139488670742423, 24.581254548714867]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.945834401197942, 21.023064589317926, 21.04308888148381, 24.229584011709846]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.731016941826495, -1.4332986364228475, -1.6861925629119299, -1.1135940836663976]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.2861727518301223, -2.0744357312136685, -2.248342333845187, -1.2196185537475799]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5208829223811464, -1.4893133684053927, -1.801921946263607, -1.4996345317162485]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6710845777567163, -1.899382872371914, -2.385386686197547, -1.6563900936029667]}}