{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:48.075237", "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": "2012-Mar-09_to_2012-Mar-11_300.0_-2.5"}, "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": 2012030000676}, "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": "March 09 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 11 2012"}, "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": 64888.39246997915}, "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.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": -2.5}, "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": 300.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "300.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 299.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 301.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -2.75}, "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": {"2012-03-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.25, -2.0], [-61.03, -1.47], [-60.68, -1.32], [-60.53, -0.97], [-60.18, -0.82], [-60.15, -0.75], [-60.18, -0.68], [-60.53, -0.53], [-60.75, 0.0], [-60.53, 0.53], [-60.0, 0.75], [-59.75, 0.65], [-59.5, 0.75], [-59.25, 0.65], [-59.0, 0.75], [-58.47, 0.53], [-58.32, 0.18], [-57.97, 0.03], [-57.75, -0.5], [-57.85, -0.75], [-57.75, -1.0], [-57.85, -1.25], [-57.75, -1.5], [-57.85, -1.75], [-57.75, -2.0], [-57.97, -2.53], [-58.32, -2.68], [-58.47, -3.03], [-59.0, -3.25], [-59.25, -3.15], [-59.5, -3.25], [-59.75, -3.15], [-60.0, -3.25], [-60.53, -3.03], [-60.68, -2.68], [-61.03, -2.53], [-61.25, -2.0]]]]}, "2012-03-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.25, -2.0], [-61.03, -1.47], [-60.68, -1.32], [-60.53, -0.97], [-60.18, -0.82], [-60.15, -0.75], [-60.18, -0.68], [-60.53, -0.53], [-60.75, 0.0], [-60.53, 0.53], [-60.0, 0.75], [-59.75, 0.65], [-59.5, 0.75], [-59.25, 0.65], [-59.0, 0.75], [-58.47, 0.53], [-58.32, 0.18], [-57.97, 0.03], [-57.75, -0.5], [-57.85, -0.75], [-57.75, -1.0], [-57.85, -1.25], [-57.75, -1.5], [-57.85, -1.75], [-57.75, -2.0], [-57.97, -2.53], [-58.32, -2.68], [-58.47, -3.03], [-59.0, -3.25], [-59.25, -3.15], [-59.5, -3.25], [-59.75, -3.15], [-60.0, -3.25], [-60.53, -3.03], [-60.68, -2.68], [-61.03, -2.53], [-61.25, -2.0]]]]}, "2012-03-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.25, -2.0], [-61.03, -1.47], [-60.68, -1.32], [-60.53, -0.97], [-60.18, -0.82], [-60.15, -0.75], [-60.18, -0.68], [-60.53, -0.53], [-60.75, 0.0], [-60.53, 0.53], [-60.0, 0.75], [-59.75, 0.65], [-59.5, 0.75], [-59.25, 0.65], [-59.0, 0.75], [-58.47, 0.53], [-58.32, 0.18], [-57.97, 0.03], [-57.75, -0.5], [-57.85, -0.75], [-57.75, -1.0], [-57.85, -1.25], [-57.75, -1.5], [-57.85, -1.75], [-57.75, -2.0], [-57.97, -2.53], [-58.32, -2.68], [-58.47, -3.03], [-59.0, -3.25], [-59.25, -3.15], [-59.5, -3.25], [-59.75, -3.15], [-60.0, -3.25], [-60.53, -3.03], [-60.68, -2.68], [-61.03, -2.53], [-61.25, -2.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.536034765262741}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9577601498473125}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.19671699341808, 23.639255183276532, 23.902495191059074]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.74440882757324, 23.076111681314785, 23.257843665237885]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.275342629086976, -1.9013262364222836, -1.6966115840326774]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.5191105826006606, -2.536034765262741, -2.1313781812253865]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8279127664982238, -1.516680269158375, -1.361489155470593]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.207289562202491, -1.8605934979691832, -1.6694723299505494]}}