{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:55:54.947163", "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": "2014-Mar-18_to_2014-Mar-20_301.0_-28.5"}, "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": 2014030000765}, "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 18 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 20 2014"}, "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": 54309.83539062734}, "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", "Brazil"]}, "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": -28.5}, "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": 301.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "301.0\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": 303.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -30.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -26.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-03-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.03, -26.47], [-60.5, -26.25], [-60.25, -26.35], [-60.0, -26.25], [-59.47, -26.47], [-59.32, -26.82], [-58.97, -26.97], [-58.82, -27.32], [-58.47, -27.47], [-58.32, -27.82], [-57.97, -27.97], [-57.75, -28.5], [-57.85, -28.75], [-57.82, -28.82], [-57.75, -28.85], [-57.5, -28.75], [-57.25, -28.85], [-57.0, -28.75], [-56.47, -28.97], [-56.25, -29.5], [-56.35, -29.75], [-56.25, -30.0], [-56.47, -30.53], [-57.0, -30.75], [-57.25, -30.65], [-57.5, -30.75], [-58.03, -30.53], [-58.18, -30.18], [-58.25, -30.15], [-58.5, -30.25], [-59.03, -30.03], [-59.18, -29.68], [-59.53, -29.53], [-59.68, -29.18], [-59.75, -29.15], [-60.0, -29.25], [-60.53, -29.03], [-60.75, -28.5], [-60.65, -28.25], [-60.68, -28.18], [-61.03, -28.03], [-61.25, -27.5], [-61.15, -27.25], [-61.25, -27.0], [-61.03, -26.47]]]]}, "2014-03-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.03, -26.47], [-60.5, -26.25], [-60.25, -26.35], [-60.0, -26.25], [-59.47, -26.47], [-59.32, -26.82], [-58.97, -26.97], [-58.82, -27.32], [-58.47, -27.47], [-58.32, -27.82], [-57.97, -27.97], [-57.75, -28.5], [-57.85, -28.75], [-57.82, -28.82], [-57.75, -28.85], [-57.5, -28.75], [-57.25, -28.85], [-57.0, -28.75], [-56.47, -28.97], [-56.25, -29.5], [-56.35, -29.75], [-56.25, -30.0], [-56.47, -30.53], [-57.0, -30.75], [-57.25, -30.65], [-57.5, -30.75], [-58.03, -30.53], [-58.18, -30.18], [-58.25, -30.15], [-58.5, -30.25], [-59.03, -30.03], [-59.18, -29.68], [-59.53, -29.53], [-59.68, -29.18], [-59.75, -29.15], [-60.0, -29.25], [-60.53, -29.03], [-60.75, -28.5], [-60.65, -28.25], [-60.68, -28.18], [-61.03, -28.03], [-61.25, -27.5], [-61.15, -27.25], [-61.25, -27.0], [-61.03, -26.47]]]]}, "2014-03-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.03, -26.47], [-60.5, -26.25], [-60.25, -26.35], [-60.0, -26.25], [-59.47, -26.47], [-59.32, -26.82], [-58.97, -26.97], [-58.82, -27.32], [-58.47, -27.47], [-58.32, -27.82], [-57.97, -27.97], [-57.75, -28.5], [-57.85, -28.75], [-57.82, -28.82], [-57.75, -28.85], [-57.5, -28.75], [-57.25, -28.85], [-57.0, -28.75], [-56.47, -28.97], [-56.25, -29.5], [-56.35, -29.75], [-56.25, -30.0], [-56.47, -30.53], [-57.0, -30.75], [-57.25, -30.65], [-57.5, -30.75], [-58.03, -30.53], [-58.18, -30.18], [-58.25, -30.15], [-58.5, -30.25], [-59.03, -30.03], [-59.18, -29.68], [-59.53, -29.53], [-59.68, -29.18], [-59.75, -29.15], [-60.0, -29.25], [-60.53, -29.03], [-60.75, -28.5], [-60.65, -28.25], [-60.68, -28.18], [-61.03, -28.03], [-61.25, -27.5], [-61.15, -27.25], [-61.25, -27.0], [-61.03, -26.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.381270467101103}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.279920528502629}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.82694679917489, 19.031942599063996, 19.432947540150792]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.120678736943887, 17.950688556337468, 18.6764727151986]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.072853182973526, -4.660001511095151, -4.106906891439209]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.543456175381095, -5.381270467101103, -4.351069430269661]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.530493967860107, -1.7345989240794608, -1.5271454221000085]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6849343757729096, -1.945246731930926, -1.659641504725661]}}