{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:45:40.212222", "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-Sep-30_to_2010-Oct-07_290.0_12.0"}, "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": 2010090001286}, "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": "September 30 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 07 2010"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 51543.25497239239}, "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": ["Venezuela"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Caribbean", "N.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": ["Caribbean Sea"]}, "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": 12.0}, "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": 290.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "290.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 288.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 291.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 9.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 12.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-09-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.0, 10.75], [-69.47, 10.53], [-69.25, 10.0], [-69.47, 9.47], [-70.0, 9.25], [-70.53, 9.47], [-70.75, 10.0], [-70.53, 10.53], [-70.0, 10.75]]]]}, "2010-10-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.03, 11.53], [-70.68, 11.68], [-70.65, 11.75], [-70.75, 12.0], [-70.53, 12.53], [-70.0, 12.75], [-69.47, 12.53], [-69.25, 12.0], [-69.35, 11.75], [-69.25, 11.5], [-69.35, 11.25], [-69.25, 11.0], [-69.35, 10.75], [-69.25, 10.5], [-69.35, 10.25], [-69.25, 10.0], [-69.47, 9.47], [-70.0, 9.25], [-70.53, 9.47], [-70.68, 9.82], [-71.03, 9.97], [-71.25, 10.5], [-71.15, 10.75], [-71.25, 11.0], [-71.03, 11.53]]]]}, "2010-10-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.03, 11.53], [-70.68, 11.68], [-70.65, 11.75], [-70.75, 12.0], [-70.53, 12.53], [-70.0, 12.75], [-69.47, 12.53], [-69.25, 12.0], [-69.35, 11.75], [-69.25, 11.5], [-69.35, 11.25], [-69.25, 11.0], [-69.35, 10.75], [-69.25, 10.5], [-69.35, 10.25], [-69.25, 10.0], [-69.47, 9.47], [-70.0, 9.25], [-70.53, 9.47], [-70.68, 9.82], [-71.03, 9.97], [-71.25, 10.5], [-71.15, 10.75], [-71.25, 11.0], [-71.03, 11.53]]]]}, "2010-10-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.53, 12.53], [-71.18, 12.68], [-71.03, 13.03], [-70.5, 13.25], [-69.97, 13.03], [-69.82, 12.68], [-69.47, 12.53], [-69.32, 12.18], [-68.97, 12.03], [-68.82, 11.68], [-68.47, 11.53], [-68.25, 11.0], [-68.47, 10.47], [-68.82, 10.32], [-68.97, 9.97], [-69.32, 9.82], [-69.47, 9.47], [-70.0, 9.25], [-70.53, 9.47], [-70.68, 9.82], [-71.03, 9.97], [-71.18, 10.32], [-71.25, 10.35], [-71.5, 10.25], [-72.03, 10.47], [-72.25, 11.0], [-72.03, 11.53], [-71.62, 11.7], [-71.75, 12.0], [-71.53, 12.53]]]]}, "2010-10-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.53, 12.53], [-71.18, 12.68], [-71.03, 13.03], [-70.5, 13.25], [-69.97, 13.03], [-69.82, 12.68], [-69.47, 12.53], [-69.32, 12.18], [-68.97, 12.03], [-68.82, 11.68], [-68.47, 11.53], [-68.25, 11.0], [-68.47, 10.47], [-68.82, 10.32], [-68.97, 9.97], [-69.32, 9.82], [-69.47, 9.47], [-70.0, 9.25], [-70.53, 9.47], [-70.68, 9.82], [-71.03, 9.97], [-71.18, 10.32], [-71.25, 10.35], [-71.5, 10.25], [-72.03, 10.47], [-72.25, 11.0], [-72.03, 11.53], [-71.62, 11.7], [-71.75, 12.0], [-71.53, 12.53]]]]}, "2010-10-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.53, 12.53], [-71.18, 12.68], [-71.03, 13.03], [-70.5, 13.25], [-69.97, 13.03], [-69.82, 12.68], [-69.47, 12.53], [-69.32, 12.18], [-68.97, 12.03], [-68.82, 11.68], [-68.47, 11.53], [-68.25, 11.0], [-68.47, 10.47], [-68.82, 10.32], [-68.97, 9.97], [-69.32, 9.82], [-69.47, 9.47], [-70.0, 9.25], [-70.53, 9.47], [-70.68, 9.82], [-71.03, 9.97], [-71.18, 10.32], [-71.25, 10.35], [-71.5, 10.25], [-72.03, 10.47], [-72.25, 11.0], [-72.03, 11.53], [-71.62, 11.7], [-71.75, 12.0], [-71.53, 12.53]]]]}, "2010-10-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.53, 11.47], [-71.75, 12.0], [-71.53, 12.53], [-71.0, 12.75], [-70.75, 12.65], [-70.5, 12.75], [-70.25, 12.65], [-70.0, 12.75], [-69.47, 12.53], [-69.32, 12.18], [-68.97, 12.03], [-68.75, 11.5], [-68.85, 11.25], [-68.75, 11.0], [-68.97, 10.47], [-69.32, 10.32], [-69.35, 10.25], [-69.25, 10.0], [-69.47, 9.47], [-70.0, 9.25], [-70.53, 9.47], [-70.75, 10.0], [-70.65, 10.25], [-70.75, 10.5], [-70.65, 10.75], [-70.75, 11.0], [-70.65, 11.25], [-70.68, 11.32], [-70.75, 11.35], [-71.0, 11.25], [-71.53, 11.47]]]]}, "2010-10-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.65, 11.75], [-70.75, 12.0], [-70.53, 12.53], [-70.0, 12.75], [-69.47, 12.53], [-69.32, 12.18], [-68.97, 12.03], [-68.75, 11.5], [-68.97, 10.97], [-69.32, 10.82], [-69.47, 10.47], [-70.0, 10.25], [-70.53, 10.47], [-70.75, 11.0], [-70.65, 11.25], [-70.75, 11.5], [-70.65, 11.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.0612901184649104}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.7065278425402726}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.209132083887482, 25.31664353316927, 25.70603395328476, 25.859787237637875, 25.715758592832742, 25.751763623306715, 26.083833216708456, 26.710099790530478]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.209132083887482, 23.8012446851738, 23.99648323070147, 23.730466184624504, 23.228134431493174, 23.336366857102917, 24.460201943103186, 25.283608736597614]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.164655708853843, -2.167173116845293, -1.7498762365632305, -1.658566860471808, -1.7495665353548187, -1.6689555266169223, -1.3973400663793174, -1.5862815247534598]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.164655708853843, -2.697361785024327, -2.336114249548018, -2.732539020646186, -3.0612901184649104, -2.91411362983996, -2.0703409038069935, -2.1710483927031987]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6166552606276705, -1.7090400742558534, -1.3813301716500017, -1.716908833375601, -1.7680979445040332, -1.7099707693207056, -1.472163172115452, -1.5778063210486597]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6166552606276705, -2.1891012032301664, -1.7694182237795069, -2.1224780517799533, -2.3648547488951865, -2.2493402645073886, -1.908496285296739, -1.7309280689152349]}}