{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:12:24.400463", "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-10_to_2018-Apr-12_316.5_-3.0"}, "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": 2018040000525}, "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 10 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": 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": 55587.97751939843}, "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": -3.0}, "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": 316.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "316.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 313.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 316.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -3.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -1.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-04-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-47.25, -1.5], [-47.03, -0.97], [-46.5, -0.75], [-46.25, -0.85], [-46.0, -0.75], [-45.75, -0.85], [-45.5, -0.75], [-45.25, -0.85], [-45.0, -0.75], [-44.75, -0.85], [-44.5, -0.75], [-43.97, -0.97], [-43.75, -1.5], [-43.85, -1.75], [-43.75, -2.0], [-43.85, -2.25], [-43.82, -2.32], [-43.75, -2.35], [-43.5, -2.25], [-42.97, -2.47], [-42.75, -3.0], [-42.85, -3.25], [-42.75, -3.5], [-42.97, -4.03], [-43.5, -4.25], [-43.75, -4.15], [-44.0, -4.25], [-44.53, -4.03], [-44.7, -3.62], [-45.0, -3.75], [-45.25, -3.65], [-45.5, -3.75], [-45.75, -3.65], [-46.0, -3.75], [-46.53, -3.53], [-46.75, -3.0], [-46.65, -2.75], [-46.75, -2.5], [-46.65, -2.25], [-46.68, -2.18], [-47.03, -2.03], [-47.25, -1.5]]]]}, "2018-04-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-47.25, -1.5], [-47.03, -0.97], [-46.5, -0.75], [-46.25, -0.85], [-46.0, -0.75], [-45.75, -0.85], [-45.5, -0.75], [-45.25, -0.85], [-45.0, -0.75], [-44.75, -0.85], [-44.5, -0.75], [-43.97, -0.97], [-43.75, -1.5], [-43.85, -1.75], [-43.75, -2.0], [-43.85, -2.25], [-43.82, -2.32], [-43.75, -2.35], [-43.5, -2.25], [-42.97, -2.47], [-42.75, -3.0], [-42.85, -3.25], [-42.75, -3.5], [-42.97, -4.03], [-43.5, -4.25], [-43.75, -4.15], [-44.0, -4.25], [-44.53, -4.03], [-44.7, -3.62], [-45.0, -3.75], [-45.25, -3.65], [-45.5, -3.75], [-45.75, -3.65], [-46.0, -3.75], [-46.53, -3.53], [-46.75, -3.0], [-46.65, -2.75], [-46.75, -2.5], [-46.65, -2.25], [-46.68, -2.18], [-47.03, -2.03], [-47.25, -1.5]]]]}, "2018-04-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-47.25, -1.5], [-47.03, -0.97], [-46.5, -0.75], [-46.25, -0.85], [-46.0, -0.75], [-45.75, -0.85], [-45.5, -0.75], [-45.25, -0.85], [-45.0, -0.75], [-44.75, -0.85], [-44.5, -0.75], [-43.97, -0.97], [-43.75, -1.5], [-43.85, -1.75], [-43.75, -2.0], [-43.85, -2.25], [-43.82, -2.32], [-43.75, -2.35], [-43.5, -2.25], [-42.97, -2.47], [-42.75, -3.0], [-42.85, -3.25], [-42.75, -3.5], [-42.97, -4.03], [-43.5, -4.25], [-43.75, -4.15], [-44.0, -4.25], [-44.53, -4.03], [-44.7, -3.62], [-45.0, -3.75], [-45.25, -3.65], [-45.5, -3.75], [-45.75, -3.65], [-46.0, -3.75], [-46.53, -3.53], [-46.75, -3.0], [-46.65, -2.75], [-46.75, -2.5], [-46.65, -2.25], [-46.68, -2.18], [-47.03, -2.03], [-47.25, -1.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.343478968049567}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.3065951466692725}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.88825796538208, 24.86607305811873, 24.726948184152832]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.283775021901704, 23.868618453244437, 23.72907796772455]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.266212453757709, -1.2658179485778729, -1.3877550376722354]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.9533299899627536, -2.343478968049567, -2.008350470236792]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5729895387073225, -1.5819099989861174, -1.7457538429721664]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0709199681667916, -2.485289255472095, -2.389077788663601]}}