{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:20.186086", "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-Mar-20_to_2019-Mar-22_295.0_-24.5"}, "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": 2019030000575}, "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 20 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 22 2019"}, "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": 65005.10684008486}, "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"]}, "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": []}, "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": -24.5}, "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": 295.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "295.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 294.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 296.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -25.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -21.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-03-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.03, -24.47], [-65.68, -24.32], [-65.65, -24.25], [-65.75, -24.0], [-65.65, -23.75], [-65.75, -23.5], [-65.53, -22.97], [-65.18, -22.82], [-65.15, -22.75], [-65.25, -22.5], [-65.03, -21.97], [-64.68, -21.82], [-64.53, -21.47], [-64.0, -21.25], [-63.47, -21.47], [-63.32, -21.82], [-62.97, -21.97], [-62.75, -22.5], [-62.96, -23.0], [-62.75, -23.5], [-62.85, -23.75], [-62.75, -24.0], [-62.85, -24.25], [-62.75, -24.5], [-62.97, -25.03], [-63.32, -25.18], [-63.47, -25.53], [-64.0, -25.75], [-64.25, -25.65], [-64.5, -25.75], [-64.75, -25.65], [-64.82, -25.68], [-64.97, -26.03], [-65.5, -26.25], [-66.03, -26.03], [-66.25, -25.5], [-66.15, -25.25], [-66.25, -25.0], [-66.03, -24.47]]]]}, "2019-03-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.03, -24.47], [-65.68, -24.32], [-65.65, -24.25], [-65.75, -24.0], [-65.65, -23.75], [-65.75, -23.5], [-65.53, -22.97], [-65.18, -22.82], [-65.15, -22.75], [-65.25, -22.5], [-65.03, -21.97], [-64.68, -21.82], [-64.53, -21.47], [-64.0, -21.25], [-63.47, -21.47], [-63.32, -21.82], [-62.97, -21.97], [-62.75, -22.5], [-62.96, -23.0], [-62.75, -23.5], [-62.85, -23.75], [-62.75, -24.0], [-62.85, -24.25], [-62.75, -24.5], [-62.97, -25.03], [-63.32, -25.18], [-63.47, -25.53], [-64.0, -25.75], [-64.25, -25.65], [-64.5, -25.75], [-64.75, -25.65], [-64.82, -25.68], [-64.97, -26.03], [-65.5, -26.25], [-66.03, -26.03], [-66.25, -25.5], [-66.15, -25.25], [-66.25, -25.0], [-66.03, -24.47]]]]}, "2019-03-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.03, -24.47], [-65.68, -24.32], [-65.65, -24.25], [-65.75, -24.0], [-65.65, -23.75], [-65.75, -23.5], [-65.53, -22.97], [-65.18, -22.82], [-65.15, -22.75], [-65.25, -22.5], [-65.03, -21.97], [-64.68, -21.82], [-64.53, -21.47], [-64.0, -21.25], [-63.47, -21.47], [-63.32, -21.82], [-62.97, -21.97], [-62.75, -22.5], [-62.96, -23.0], [-62.75, -23.5], [-62.85, -23.75], [-62.75, -24.0], [-62.85, -24.25], [-62.75, -24.5], [-62.97, -25.03], [-63.32, -25.18], [-63.47, -25.53], [-64.0, -25.75], [-64.25, -25.65], [-64.5, -25.75], [-64.75, -25.65], [-64.82, -25.68], [-64.97, -26.03], [-65.5, -26.25], [-66.03, -26.03], [-66.25, -25.5], [-66.15, -25.25], [-66.25, -25.0], [-66.03, -24.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.235453338178274}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.968365538878724}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.698796438227532, 15.39277028504847, 17.25404767272147]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.637515180018852, 9.39898223520703, 10.683723442791688]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.156881125344465, -6.37332544824851, -4.374890043043197]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.830652043140162, -7.235453338178274, -5.491622315767302]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.765136624367289, -2.701667712943841, -1.8481695393383812]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3814064002562474, -3.1434757732580647, -2.5959124933241116]}}