{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:09.087221", "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": "2011-Apr-08_to_2011-Apr-10_308.0_-10.0"}, "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": 2011040000482}, "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 08 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 10 2011"}, "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": 94687.94372361021}, "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": ["Brazil"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America", "N.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": -10.0}, "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": 308.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "308.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 307.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 310.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -10.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -7.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-53.03, -7.97], [-52.68, -7.82], [-52.65, -7.75], [-52.75, -7.5], [-52.53, -6.97], [-52.0, -6.75], [-51.75, -6.85], [-51.5, -6.75], [-51.25, -6.85], [-51.0, -6.75], [-50.75, -6.85], [-50.5, -6.75], [-49.97, -6.97], [-49.82, -7.32], [-49.47, -7.47], [-49.25, -8.0], [-49.35, -8.25], [-49.32, -8.32], [-48.97, -8.47], [-48.75, -9.0], [-48.85, -9.25], [-48.75, -9.5], [-48.97, -10.03], [-49.5, -10.25], [-50.03, -10.03], [-50.18, -9.68], [-50.25, -9.65], [-50.32, -9.68], [-50.35, -9.75], [-50.25, -10.0], [-50.47, -10.53], [-51.0, -10.75], [-51.25, -10.65], [-51.32, -10.68], [-51.47, -11.03], [-52.0, -11.25], [-52.53, -11.03], [-52.68, -10.68], [-53.03, -10.53], [-53.25, -10.0], [-53.04, -9.5], [-53.25, -9.0], [-53.15, -8.75], [-53.25, -8.5], [-53.03, -7.97]]]]}, "2011-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-53.03, -7.97], [-52.68, -7.82], [-52.65, -7.75], [-52.75, -7.5], [-52.53, -6.97], [-52.0, -6.75], [-51.75, -6.85], [-51.5, -6.75], [-51.25, -6.85], [-51.0, -6.75], [-50.75, -6.85], [-50.5, -6.75], [-49.97, -6.97], [-49.82, -7.32], [-49.47, -7.47], [-49.25, -8.0], [-49.35, -8.25], [-49.32, -8.32], [-48.97, -8.47], [-48.75, -9.0], [-48.85, -9.25], [-48.75, -9.5], [-48.97, -10.03], [-49.5, -10.25], [-50.03, -10.03], [-50.18, -9.68], [-50.25, -9.65], [-50.32, -9.68], [-50.35, -9.75], [-50.25, -10.0], [-50.47, -10.53], [-51.0, -10.75], [-51.25, -10.65], [-51.32, -10.68], [-51.47, -11.03], [-52.0, -11.25], [-52.53, -11.03], [-52.68, -10.68], [-53.03, -10.53], [-53.25, -10.0], [-53.04, -9.5], [-53.25, -9.0], [-53.15, -8.75], [-53.25, -8.5], [-53.03, -7.97]]]]}, "2011-04-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-53.03, -7.97], [-52.68, -7.82], [-52.65, -7.75], [-52.75, -7.5], [-52.53, -6.97], [-52.0, -6.75], [-51.75, -6.85], [-51.5, -6.75], [-51.25, -6.85], [-51.0, -6.75], [-50.75, -6.85], [-50.5, -6.75], [-49.97, -6.97], [-49.82, -7.32], [-49.47, -7.47], [-49.25, -8.0], [-49.35, -8.25], [-49.32, -8.32], [-48.97, -8.47], [-48.75, -9.0], [-48.85, -9.25], [-48.75, -9.5], [-48.97, -10.03], [-49.5, -10.25], [-50.03, -10.03], [-50.18, -9.68], [-50.25, -9.65], [-50.32, -9.68], [-50.35, -9.75], [-50.25, -10.0], [-50.47, -10.53], [-51.0, -10.75], [-51.25, -10.65], [-51.32, -10.68], [-51.47, -11.03], [-52.0, -11.25], [-52.53, -11.03], [-52.68, -10.68], [-53.03, -10.53], [-53.25, -10.0], [-53.04, -9.5], [-53.25, -9.0], [-53.15, -8.75], [-53.25, -8.5], [-53.03, -7.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.242597391416723}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.4705812056142504}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.397564547189234, 23.712333246076923, 23.58947288772646]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.501237373933577, 22.912983548352827, 22.479582518847906]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6657557550920299, -1.3205401904663783, -1.4254476712843434]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.242597391416723, -1.725357931416454, -1.9077905300458156]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7309271091647722, -1.3790392093378172, -1.5193413242816678]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.4176775033326563, -1.7474174620378295, -1.866788411065212]}}