{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:53.089026", "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": "2019-Jan-09_to_2019-Jan-12_315.0_-1.5"}, "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": 2019010000304}, "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": "January 09 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 12 2019"}, "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": 80316.8334419072}, "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": -1.5}, "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": 315.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "315.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 311.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 315.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -3.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -0.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-01-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-47.0, 0.25], [-46.47, 0.03], [-46.25, -0.5], [-46.47, -1.03], [-47.0, -1.25], [-47.53, -1.03], [-47.75, -0.5], [-47.53, 0.03], [-47.0, 0.25]]]]}, "2019-01-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.75, -2.5], [-48.53, -1.97], [-48.18, -1.82], [-48.15, -1.75], [-48.25, -1.5], [-48.15, -1.25], [-48.25, -1.0], [-48.03, -0.47], [-47.68, -0.32], [-47.53, 0.03], [-47.0, 0.25], [-46.47, 0.03], [-46.32, -0.32], [-45.97, -0.47], [-45.82, -0.82], [-45.75, -0.85], [-45.5, -0.75], [-45.25, -0.85], [-45.0, -0.75], [-44.47, -0.97], [-44.25, -1.5], [-44.35, -1.75], [-44.32, -1.82], [-43.97, -1.97], [-43.75, -2.5], [-43.97, -3.03], [-44.32, -3.18], [-44.47, -3.53], [-45.0, -3.75], [-45.53, -3.53], [-45.68, -3.18], [-45.75, -3.15], [-46.0, -3.25], [-46.25, -3.15], [-46.5, -3.25], [-46.75, -3.15], [-46.82, -3.18], [-46.97, -3.53], [-47.5, -3.75], [-48.03, -3.53], [-48.18, -3.18], [-48.53, -3.03], [-48.75, -2.5]]]]}, "2019-01-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.75, -2.5], [-48.53, -1.97], [-48.18, -1.82], [-48.15, -1.75], [-48.25, -1.5], [-48.15, -1.25], [-48.25, -1.0], [-48.03, -0.47], [-47.68, -0.32], [-47.53, 0.03], [-47.0, 0.25], [-46.47, 0.03], [-46.32, -0.32], [-45.97, -0.47], [-45.82, -0.82], [-45.75, -0.85], [-45.5, -0.75], [-45.25, -0.85], [-45.0, -0.75], [-44.47, -0.97], [-44.25, -1.5], [-44.35, -1.75], [-44.32, -1.82], [-43.97, -1.97], [-43.75, -2.5], [-43.97, -3.03], [-44.32, -3.18], [-44.47, -3.53], [-45.0, -3.75], [-45.53, -3.53], [-45.68, -3.18], [-45.75, -3.15], [-46.0, -3.25], [-46.25, -3.15], [-46.5, -3.25], [-46.75, -3.15], [-46.82, -3.18], [-46.97, -3.53], [-47.5, -3.75], [-48.03, -3.53], [-48.18, -3.18], [-48.53, -3.03], [-48.75, -2.5]]]]}, "2019-01-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.75, -2.5], [-48.53, -1.97], [-48.18, -1.82], [-48.15, -1.75], [-48.25, -1.5], [-48.15, -1.25], [-48.25, -1.0], [-48.03, -0.47], [-47.5, -0.25], [-47.25, -0.35], [-47.0, -0.25], [-46.75, -0.35], [-46.5, -0.25], [-45.97, -0.47], [-45.82, -0.82], [-45.75, -0.85], [-45.5, -0.75], [-45.25, -0.85], [-45.0, -0.75], [-44.47, -0.97], [-44.25, -1.5], [-44.35, -1.75], [-44.32, -1.82], [-43.97, -1.97], [-43.75, -2.5], [-43.97, -3.03], [-44.32, -3.18], [-44.47, -3.53], [-45.0, -3.75], [-45.53, -3.53], [-45.68, -3.18], [-45.75, -3.15], [-46.0, -3.25], [-46.25, -3.15], [-46.5, -3.25], [-46.75, -3.15], [-46.82, -3.18], [-46.97, -3.53], [-47.5, -3.75], [-48.03, -3.53], [-48.18, -3.18], [-48.53, -3.03], [-48.75, -2.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.607975980400738}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9278946592557105}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.525001740473158, 24.79173441431982, 24.643266435560122, 24.675197101364972]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.525001740473158, 24.25830737891698, 24.00374119413874, 23.827331885693695]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.7648210008972001, -1.87780184065997, -1.9958577070009063, -1.9558325672746173]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.7648210008972001, -2.356823114984195, -2.607975980400738, -2.3205564561884557]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.272886177285305, -1.653864289277629, -1.7542161289493652, -1.6989664938784008]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.272886177285305, -2.073853514119853, -2.349717927722686, -2.129320532247204]}}