{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:56.816415", "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-26_to_2012-Mar-28_303.0_-37.0"}, "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": 2012030001495}, "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 26 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 28 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": 167589.97780236322}, "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": ["Argentina"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": -37.0}, "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": 303.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "303.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 297.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 305.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -38.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -33.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-03-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.03, -33.97], [-62.5, -33.75], [-62.25, -33.85], [-62.0, -33.75], [-61.75, -33.85], [-61.68, -33.82], [-61.53, -33.47], [-61.0, -33.25], [-60.47, -33.47], [-60.32, -33.82], [-60.25, -33.85], [-60.0, -33.75], [-59.47, -33.97], [-59.32, -34.32], [-59.25, -34.35], [-59.0, -34.25], [-58.75, -34.35], [-58.5, -34.25], [-58.25, -34.35], [-58.0, -34.25], [-57.47, -34.47], [-57.32, -34.82], [-56.97, -34.97], [-56.75, -35.5], [-56.85, -35.75], [-56.82, -35.82], [-56.75, -35.85], [-56.68, -35.82], [-56.53, -35.47], [-56.18, -35.32], [-56.03, -34.97], [-55.5, -34.75], [-55.25, -34.85], [-55.0, -34.75], [-54.47, -34.97], [-54.25, -35.5], [-54.47, -36.03], [-54.82, -36.18], [-54.85, -36.25], [-54.75, -36.5], [-54.97, -37.03], [-55.5, -37.25], [-55.75, -37.15], [-55.82, -37.18], [-55.97, -37.53], [-56.32, -37.68], [-56.47, -38.03], [-56.82, -38.18], [-56.97, -38.53], [-57.5, -38.75], [-57.75, -38.65], [-58.0, -38.75], [-58.53, -38.53], [-58.68, -38.18], [-59.03, -38.03], [-59.18, -37.68], [-59.25, -37.65], [-59.5, -37.75], [-59.75, -37.65], [-60.0, -37.75], [-60.25, -37.65], [-60.5, -37.75], [-61.03, -37.53], [-61.18, -37.18], [-61.53, -37.03], [-61.68, -36.68], [-62.03, -36.53], [-62.18, -36.18], [-62.53, -36.03], [-62.68, -35.68], [-63.03, -35.53], [-63.25, -35.0], [-63.15, -34.75], [-63.25, -34.5], [-63.03, -33.97]]]]}, "2012-03-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.03, -33.97], [-62.5, -33.75], [-62.25, -33.85], [-62.0, -33.75], [-61.75, -33.85], [-61.68, -33.82], [-61.53, -33.47], [-61.0, -33.25], [-60.47, -33.47], [-60.32, -33.82], [-60.25, -33.85], [-60.0, -33.75], [-59.47, -33.97], [-59.32, -34.32], [-59.25, -34.35], [-59.0, -34.25], [-58.75, -34.35], [-58.5, -34.25], [-58.25, -34.35], [-58.0, -34.25], [-57.47, -34.47], [-57.32, -34.82], [-56.97, -34.97], [-56.75, -35.5], [-56.85, -35.75], [-56.82, -35.82], [-56.75, -35.85], [-56.68, -35.82], [-56.53, -35.47], [-56.18, -35.32], [-56.03, -34.97], [-55.5, -34.75], [-55.25, -34.85], [-55.0, -34.75], [-54.47, -34.97], [-54.25, -35.5], [-54.47, -36.03], [-54.82, -36.18], [-54.85, -36.25], [-54.75, -36.5], [-54.97, -37.03], [-55.5, -37.25], [-55.75, -37.15], [-55.82, -37.18], [-55.97, -37.53], [-56.32, -37.68], [-56.47, -38.03], [-56.82, -38.18], [-56.97, -38.53], [-57.5, -38.75], [-57.75, -38.65], [-58.0, -38.75], [-58.53, -38.53], [-58.68, -38.18], [-59.03, -38.03], [-59.18, -37.68], [-59.25, -37.65], [-59.5, -37.75], [-59.75, -37.65], [-60.0, -37.75], [-60.25, -37.65], [-60.5, -37.75], [-61.03, -37.53], [-61.18, -37.18], [-61.53, -37.03], [-61.68, -36.68], [-62.03, -36.53], [-62.18, -36.18], [-62.53, -36.03], [-62.68, -35.68], [-63.03, -35.53], [-63.25, -35.0], [-63.15, -34.75], [-63.25, -34.5], [-63.03, -33.97]]]]}, "2012-03-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.03, -33.97], [-62.5, -33.75], [-62.25, -33.85], [-62.0, -33.75], [-61.75, -33.85], [-61.68, -33.82], [-61.53, -33.47], [-61.0, -33.25], [-60.47, -33.47], [-60.32, -33.82], [-60.25, -33.85], [-60.0, -33.75], [-59.47, -33.97], [-59.32, -34.32], [-59.25, -34.35], [-59.0, -34.25], [-58.75, -34.35], [-58.5, -34.25], [-58.25, -34.35], [-58.0, -34.25], [-57.47, -34.47], [-57.32, -34.82], [-56.97, -34.97], [-56.75, -35.5], [-56.85, -35.75], [-56.82, -35.82], [-56.75, -35.85], [-56.68, -35.82], [-56.53, -35.47], [-56.18, -35.32], [-56.03, -34.97], [-55.5, -34.75], [-55.25, -34.85], [-55.0, -34.75], [-54.47, -34.97], [-54.25, -35.5], [-54.47, -36.03], [-54.82, -36.18], [-54.85, -36.25], [-54.75, -36.5], [-54.97, -37.03], [-55.5, -37.25], [-55.75, -37.15], [-55.82, -37.18], [-55.97, -37.53], [-56.32, -37.68], [-56.47, -38.03], [-56.82, -38.18], [-56.97, -38.53], [-57.5, -38.75], [-57.75, -38.65], [-58.0, -38.75], [-58.53, -38.53], [-58.68, -38.18], [-59.03, -38.03], [-59.18, -37.68], [-59.25, -37.65], [-59.5, -37.75], [-59.75, -37.65], [-60.0, -37.75], [-60.25, -37.65], [-60.5, -37.75], [-61.03, -37.53], [-61.18, -37.18], [-61.53, -37.03], [-61.68, -36.68], [-62.03, -36.53], [-62.18, -36.18], [-62.53, -36.03], [-62.68, -35.68], [-63.03, -35.53], [-63.25, -35.0], [-63.15, -34.75], [-63.25, -34.5], [-63.03, -33.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.436087745701229}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.400435720837894}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.43574337557078, 11.864605135952218, 13.664238137580867]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.356333087806377, 10.172410682220914, 12.029377153541134]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.9603887794413435, -6.496065692060101, -4.744852691012245]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.8629942029940025, -7.436087745701229, -5.823694502005765]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6465089103078874, -2.188526359133297, -1.6077437238739074]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2574032274502858, -2.8050732788479413, -1.992332778226687]}}