{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:44:28.172508", "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": "2010-Apr-23_to_2010-Apr-26_297.5_-19.5"}, "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": 2010040000670}, "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 23 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 26 2010"}, "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": 80951.25422309374}, "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", "Bolivia", "Paraguay"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.South-America", "South-American-Monsoon"]}, "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": -19.5}, "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": 297.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "297.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 295.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 298.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -23.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -18.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-04-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.15, -22.25], [-65.25, -22.0], [-65.03, -21.47], 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[-64.04, -19.5], [-64.25, -19.0], [-64.03, -18.47], [-63.5, -18.25], [-63.25, -18.35], [-63.0, -18.25], [-62.75, -18.35], [-62.5, -18.25], [-61.97, -18.47], [-61.82, -18.82], [-61.47, -18.97], [-61.25, -19.5], [-61.35, -19.75], [-61.32, -19.82], [-60.97, -19.97], [-60.75, -20.5], [-60.85, -20.75], [-60.75, -21.0], [-60.85, -21.25], [-60.75, -21.5], [-60.97, -22.03], [-61.5, -22.25], [-61.75, -22.15], [-62.0, -22.25], [-62.25, -22.15], [-62.5, -22.25], [-63.0, -22.04], [-63.32, -22.18], [-63.47, -22.53], [-63.82, -22.68], [-63.85, -22.75], [-63.75, -23.0], [-63.97, -23.53], [-64.5, -23.75], [-65.03, -23.53], [-65.25, -23.0], [-65.15, -22.75], [-65.25, -22.5], [-65.15, -22.25]]]]}, "2010-04-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.15, -22.25], [-65.25, -22.0], [-65.03, -21.47], [-64.68, -21.32], [-64.65, -21.25], [-64.75, -21.0], [-64.53, -20.47], [-64.12, -20.3], [-64.25, -20.0], [-64.04, -19.5], [-64.25, -19.0], [-64.03, -18.47], [-63.5, -18.25], [-63.25, -18.35], [-63.0, -18.25], [-62.75, -18.35], [-62.5, -18.25], [-61.97, -18.47], [-61.82, -18.82], [-61.47, -18.97], [-61.25, -19.5], [-61.35, -19.75], [-61.32, -19.82], [-60.97, -19.97], [-60.75, -20.5], [-60.85, -20.75], [-60.75, -21.0], [-60.85, -21.25], [-60.75, -21.5], [-60.97, -22.03], [-61.5, -22.25], [-61.75, -22.15], [-62.0, -22.25], [-62.25, -22.15], [-62.5, -22.25], [-63.0, -22.04], [-63.32, -22.18], [-63.47, -22.53], [-63.82, -22.68], [-63.85, -22.75], [-63.75, -23.0], [-63.97, -23.53], [-64.5, -23.75], [-65.03, -23.53], [-65.25, -23.0], [-65.15, -22.75], [-65.25, -22.5], [-65.15, -22.25]]]]}, "2010-04-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.25, -19.0], [-64.03, -18.47], [-63.5, -18.25], [-63.25, -18.35], [-63.0, -18.25], [-62.75, -18.35], [-62.5, -18.25], [-61.97, -18.47], [-61.75, -19.0], [-61.85, -19.25], [-61.75, -19.5], [-61.97, -20.03], [-62.32, -20.18], [-62.47, -20.53], [-63.0, -20.75], [-63.53, -20.53], [-63.75, -20.0], [-63.65, -19.75], [-63.68, -19.68], [-64.03, -19.53], [-64.25, -19.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.231120840408096}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.192003543909787}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.01421891780643, 16.94264799842432, 16.8579939015396, 18.149761169370038]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.383292561847213, 11.662208827120025, 11.494101400682382, 17.330822816070963]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.093996321750724, -5.244569563980521, -5.304350224422868, -4.83077436684808]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.187602294882424, -6.102065723826854, -6.231120840408096, -5.208036688465597]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6576374440118806, -1.6924180408282041, -1.6147248815741657, -1.5247259624546998]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.94664564272504, -1.9524144562863728, -1.8950354386217931, -1.6147412157505545]}}