{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:51.890509", "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-Jul-01_to_2011-Jul-04_273.0_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": 2011070000128}, "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": "July 01 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 04 2011"}, "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": 75649.98554355951}, "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": ["Nicaragua"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Central-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North 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": ["North Pacific Ocean"]}, "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": 273.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "273.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 270.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 274.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 9.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 13.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-07-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-89.25, 12.5], [-89.03, 13.03], [-88.68, 13.18], [-88.53, 13.53], [-88.0, 13.75], [-87.75, 13.65], [-87.5, 13.75], [-86.97, 13.53], [-86.75, 13.0], [-86.85, 12.75], [-86.82, 12.68], [-86.47, 12.53], [-86.25, 12.0], [-86.35, 11.75], [-86.32, 11.68], [-85.97, 11.53], [-85.82, 11.18], [-85.47, 11.03], [-85.25, 10.5], [-85.47, 9.97], [-86.0, 9.75], [-86.25, 9.85], [-86.32, 9.82], [-86.35, 9.75], [-86.25, 9.5], [-86.47, 8.97], [-87.0, 8.75], [-87.53, 8.97], [-87.75, 9.5], [-87.65, 9.75], [-87.75, 10.0], [-87.62, 10.3], [-88.03, 10.47], [-88.18, 10.82], [-88.25, 10.85], [-88.5, 10.75], [-88.75, 10.85], [-89.0, 10.75], [-89.53, 10.97], [-89.75, 11.5], [-89.53, 12.03], [-89.18, 12.18], [-89.15, 12.25], [-89.25, 12.5]]]]}, "2011-07-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-89.0, 13.75], [-88.75, 13.65], [-88.5, 13.75], [-88.25, 13.65], [-88.0, 13.75], [-87.75, 13.65], [-87.5, 13.75], [-86.97, 13.53], [-86.75, 13.0], [-86.85, 12.75], [-86.82, 12.68], [-86.47, 12.53], [-86.25, 12.0], [-86.35, 11.75], [-86.32, 11.68], [-85.97, 11.53], [-85.82, 11.18], [-85.47, 11.03], [-85.25, 10.5], [-85.47, 9.97], [-86.0, 9.75], [-86.25, 9.85], [-86.32, 9.82], [-86.35, 9.75], [-86.25, 9.5], [-86.47, 8.97], [-87.0, 8.75], [-87.53, 8.97], [-87.75, 9.5], [-87.65, 9.75], [-87.75, 10.0], [-87.62, 10.3], [-88.03, 10.47], [-88.18, 10.82], [-88.25, 10.85], [-88.5, 10.75], [-88.75, 10.85], [-89.0, 10.75], [-89.53, 10.97], [-89.75, 11.5], [-89.62, 11.8], [-90.03, 11.97], [-90.25, 12.5], [-90.03, 13.03], [-89.68, 13.18], [-89.53, 13.53], [-89.0, 13.75]]]]}, "2011-07-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-89.0, 13.75], [-88.75, 13.65], [-88.5, 13.75], [-88.25, 13.65], [-88.0, 13.75], [-87.75, 13.65], [-87.5, 13.75], [-86.97, 13.53], [-86.75, 13.0], [-86.85, 12.75], [-86.82, 12.68], [-86.47, 12.53], [-86.25, 12.0], [-86.35, 11.75], [-86.32, 11.68], [-85.97, 11.53], [-85.82, 11.18], [-85.47, 11.03], [-85.25, 10.5], [-85.47, 9.97], [-86.0, 9.75], [-86.25, 9.85], [-86.32, 9.82], [-86.35, 9.75], [-86.25, 9.5], [-86.47, 8.97], [-87.0, 8.75], [-87.53, 8.97], [-87.75, 9.5], [-87.65, 9.75], [-87.75, 10.0], [-87.62, 10.3], [-88.03, 10.47], [-88.18, 10.82], [-88.25, 10.85], [-88.5, 10.75], [-88.75, 10.85], [-89.0, 10.75], [-89.53, 10.97], [-89.75, 11.5], [-89.62, 11.8], [-90.03, 11.97], [-90.25, 12.5], [-90.03, 13.03], [-89.68, 13.18], [-89.53, 13.53], [-89.0, 13.75]]]]}, "2011-07-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-89.0, 13.75], [-88.75, 13.65], [-88.5, 13.75], [-88.25, 13.65], [-88.0, 13.75], [-87.47, 13.53], [-87.32, 13.18], [-86.97, 13.03], [-86.82, 12.68], [-86.47, 12.53], [-86.25, 12.0], [-86.47, 11.47], [-87.0, 11.25], [-87.25, 11.35], [-87.5, 11.25], [-87.75, 11.35], [-88.0, 11.25], [-88.25, 11.35], [-88.5, 11.25], [-89.03, 11.47], [-89.18, 11.82], [-89.25, 11.85], [-89.5, 11.75], [-90.03, 11.97], [-90.25, 12.5], [-90.03, 13.03], [-89.68, 13.18], [-89.53, 13.53], [-89.0, 13.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.2169049332043187}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.548323770074384}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.087981611175678, 26.092721055044763, 26.133025029569808, 26.247598220013913]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.631044493723266, 25.702522153564644, 25.68406363701223, 26.04969935850812]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.4978148934248208, -1.5461809616890991, -1.5128789984450464, -1.715021762574916]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.1661983811055734, -2.2087603603813477, -2.2169049332043187, -2.0090706867013637]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.573153758361929, -1.5550642321496213, -1.5332545722571966, -1.5435356208740474]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.010450802809882, -1.9277315528241377, -1.9420209382797329, -1.674050983946886]}}