{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:15.579249", "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": "2013-Jan-17_to_2013-Jan-20_298.5_-40.0"}, "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": 2013010000563}, "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 17 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 20 2013"}, "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": 59454.49417615158}, "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", "S.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": -40.0}, "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": 298.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "298.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 296.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 301.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -40.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -38.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-01-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.0, -38.75], [-61.75, -38.85], [-61.5, -38.75], [-60.97, -38.97], [-60.82, -39.32], [-60.75, -39.35], [-60.5, -39.25], [-59.97, -39.47], [-59.82, -39.82], [-59.75, -39.85], [-59.5, -39.75], [-58.97, -39.97], [-58.75, -40.5], [-58.97, -41.03], [-59.5, -41.25], [-59.75, -41.15], [-60.0, -41.25], [-60.25, -41.15], [-60.5, -41.25], [-61.03, -41.03], [-61.18, -40.68], [-61.25, -40.65], [-61.5, -40.75], [-61.75, -40.65], [-62.0, -40.75], [-62.25, -40.65], [-62.5, -40.75], [-63.03, -40.53], [-63.25, -40.0], [-63.03, -39.47], [-62.68, -39.32], [-62.53, -38.97], [-62.0, -38.75]]]]}, "2013-01-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.65, -39.25], [-63.75, -39.0], [-63.53, -38.47], [-63.0, -38.25], [-62.75, -38.35], [-62.5, -38.25], [-62.25, -38.35], [-62.0, -38.25], [-61.75, -38.35], [-61.5, -38.25], [-61.25, -38.35], [-61.0, -38.25], [-60.75, -38.35], [-60.5, -38.25], [-59.97, -38.47], [-59.82, -38.82], [-59.47, -38.97], [-59.32, -39.32], [-58.97, -39.47], [-58.82, -39.82], [-58.47, -39.97], [-58.25, -40.5], [-58.47, -41.03], [-59.0, -41.25], [-59.25, -41.15], [-59.5, -41.25], [-59.75, -41.15], [-60.0, -41.25], [-60.25, -41.15], [-60.5, -41.25], [-61.03, -41.03], [-61.18, -40.68], [-61.25, -40.65], [-61.5, -40.75], [-61.75, -40.65], [-62.0, -40.75], [-62.25, -40.65], [-62.5, -40.75], [-62.75, -40.65], [-63.0, -40.75], [-63.53, -40.53], [-63.75, -40.0], [-63.65, -39.75], [-63.75, -39.5], [-63.65, -39.25]]]]}, "2013-01-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.65, -39.25], [-63.75, -39.0], [-63.53, -38.47], [-63.0, -38.25], [-62.75, -38.35], [-62.5, -38.25], [-62.25, -38.35], [-62.0, -38.25], [-61.75, -38.35], [-61.5, -38.25], [-61.25, -38.35], [-61.0, -38.25], [-60.75, -38.35], [-60.5, -38.25], [-59.97, -38.47], [-59.82, -38.82], [-59.47, -38.97], [-59.32, -39.32], [-58.97, -39.47], [-58.82, -39.82], [-58.47, -39.97], [-58.25, -40.5], [-58.47, -41.03], [-59.0, -41.25], [-59.25, -41.15], [-59.5, -41.25], [-59.75, -41.15], [-60.0, -41.25], [-60.25, -41.15], [-60.5, -41.25], [-61.03, -41.03], [-61.18, -40.68], [-61.25, -40.65], [-61.5, -40.75], [-61.75, -40.65], [-62.0, -40.75], [-62.25, -40.65], [-62.5, -40.75], [-62.75, -40.65], [-63.0, -40.75], [-63.53, -40.53], [-63.75, -40.0], [-63.65, -39.75], [-63.75, -39.5], [-63.65, -39.25]]]]}, "2013-01-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.65, -39.25], [-63.75, -39.0], [-63.53, -38.47], [-63.0, -38.25], [-62.75, -38.35], [-62.5, -38.25], [-62.25, -38.35], [-62.0, -38.25], [-61.75, -38.35], [-61.5, -38.25], [-61.25, -38.35], [-61.0, -38.25], [-60.75, -38.35], [-60.5, -38.25], [-59.97, -38.47], [-59.82, -38.82], [-59.47, -38.97], [-59.32, -39.32], [-58.97, -39.47], [-58.82, -39.82], [-58.47, -39.97], [-58.25, -40.5], [-58.47, -41.03], [-59.0, -41.25], [-59.25, -41.15], [-59.5, -41.25], [-59.75, -41.15], [-60.0, -41.25], [-60.25, -41.15], [-60.5, -41.25], [-61.03, -41.03], [-61.18, -40.68], [-61.25, -40.65], [-61.5, -40.75], [-61.75, -40.65], [-62.0, -40.75], [-62.25, -40.65], [-62.5, -40.75], [-62.75, -40.65], [-63.0, -40.75], [-63.53, -40.53], [-63.75, -40.0], [-63.65, -39.75], [-63.75, -39.5], [-63.65, -39.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.005594210241497}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.584820179834245}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.624041824651783, 17.116179567297422, 17.069731898840814, 17.521424275198342]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.09959316764656, 14.67798601958799, 14.97767583498677, 15.310042330825127]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.1458306377350653, -3.620978967646224, -3.8311301253988743, -3.477947263297308]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.205565298495742, -5.005594210241497, -4.9381260958626285, -4.687316834316448]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.572349281654709, -1.6354121762637268, -1.7328853140779217, -1.579081374002435]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7354482740331296, -1.9037860119840344, -1.9934390836846319, -1.7075223980435157]}}