{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:29.568098", "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-Jan-02_to_2011-Jan-08_279.0_10.5"}, "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": 2011010000283}, "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": "January 02 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 08 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 79122.98617127752}, "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": ["Panama"]}, "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": ["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": 10.5}, "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": 279.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "279.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 277.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 281.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 8.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 11.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-01-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.47, 8.47], [-81.0, 8.25], [-81.53, 8.47], [-81.75, 9.0], [-81.53, 9.53], [-81.0, 9.75], [-80.47, 9.53], [-80.25, 9.0], [-80.47, 8.47]]], [[[-82.25, 10.5], [-82.03, 11.03], [-81.5, 11.25], [-81.25, 11.15], [-81.0, 11.25], [-80.75, 11.15], [-80.5, 11.25], [-79.97, 11.03], [-79.75, 10.5], [-79.97, 9.97], [-80.5, 9.75], [-80.75, 9.85], [-81.0, 9.75], [-81.25, 9.85], [-81.5, 9.75], [-82.03, 9.97], [-82.25, 10.5]]]]}, "2011-01-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.75, 9.0], [-82.53, 9.53], [-82.0, 9.75], [-81.75, 9.65], [-81.5, 9.75], [-81.25, 9.65], [-81.0, 9.75], [-80.47, 9.53], [-80.25, 9.0], [-80.47, 8.47], [-81.0, 8.25], [-81.25, 8.35], [-81.5, 8.25], [-81.75, 8.35], [-82.0, 8.25], [-82.53, 8.47], [-82.75, 9.0]]], [[[-82.03, 9.97], [-82.25, 10.5], [-82.03, 11.03], [-81.5, 11.25], [-81.25, 11.15], [-81.18, 11.18], [-81.03, 11.53], [-80.5, 11.75], [-80.25, 11.65], [-80.0, 11.75], [-79.47, 11.53], [-79.25, 11.0], [-79.47, 10.47], [-79.82, 10.32], [-79.97, 9.97], [-80.5, 9.75], [-80.75, 9.85], [-81.0, 9.75], [-81.25, 9.85], [-81.5, 9.75], [-82.03, 9.97]]]]}, "2011-01-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.53, 10.53], [-82.18, 10.68], [-82.03, 11.03], [-81.5, 11.25], [-81.25, 11.15], [-81.18, 11.18], [-81.03, 11.53], [-80.5, 11.75], [-80.25, 11.65], [-80.0, 11.75], [-79.75, 11.65], [-79.5, 11.75], [-79.25, 11.65], [-79.0, 11.75], [-78.47, 11.53], [-78.25, 11.0], [-78.47, 10.47], [-78.82, 10.32], [-78.97, 9.97], [-79.5, 9.75], [-79.75, 9.85], [-79.82, 9.82], [-79.85, 9.75], [-79.75, 9.5], [-79.85, 9.25], [-79.75, 9.0], [-79.97, 8.47], [-80.5, 8.25], [-80.75, 8.35], [-81.0, 8.25], [-81.25, 8.35], [-81.5, 8.25], [-81.75, 8.35], [-82.0, 8.25], [-82.53, 8.47], [-82.75, 9.0], [-82.54, 9.5], [-82.75, 10.0], [-82.53, 10.53]]]]}, "2011-01-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.53, 10.53], [-82.18, 10.68], [-82.03, 11.03], [-81.5, 11.25], [-81.25, 11.15], [-81.18, 11.18], [-81.03, 11.53], [-80.5, 11.75], [-80.25, 11.65], [-80.0, 11.75], [-79.75, 11.65], [-79.5, 11.75], [-79.25, 11.65], [-79.0, 11.75], [-78.47, 11.53], [-78.25, 11.0], [-78.35, 10.75], [-78.25, 10.5], [-78.35, 10.25], [-78.25, 10.0], [-78.47, 9.47], [-79.0, 9.25], [-79.25, 9.35], [-79.32, 9.32], [-79.47, 8.97], [-79.82, 8.82], [-79.97, 8.47], [-80.5, 8.25], [-80.75, 8.35], [-81.0, 8.25], [-81.25, 8.35], [-81.5, 8.25], [-81.75, 8.35], [-82.0, 8.25], [-82.53, 8.47], [-82.75, 9.0], [-82.54, 9.5], [-82.75, 10.0], [-82.53, 10.53]]]]}, "2011-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.75, 10.0], [-82.53, 10.53], [-82.18, 10.68], [-82.15, 10.75], [-82.25, 11.0], [-82.03, 11.53], [-81.5, 11.75], [-81.0, 11.54], [-80.5, 11.75], [-80.25, 11.65], [-80.0, 11.75], [-79.75, 11.65], [-79.5, 11.75], [-79.25, 11.65], [-79.0, 11.75], [-78.47, 11.53], [-78.25, 11.0], [-78.35, 10.75], [-78.25, 10.5], [-78.35, 10.25], [-78.25, 10.0], [-78.47, 9.47], [-79.0, 9.25], [-79.25, 9.35], [-79.32, 9.32], [-79.47, 8.97], [-79.82, 8.82], [-79.97, 8.47], [-80.5, 8.25], [-81.03, 8.47], [-81.18, 8.82], [-81.25, 8.85], [-81.5, 8.75], [-82.03, 8.97], [-82.18, 9.32], [-82.53, 9.47], [-82.75, 10.0]]]]}, "2011-01-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.75, 10.0], [-82.53, 10.53], [-82.18, 10.68], [-82.15, 10.75], [-82.25, 11.0], [-82.03, 11.53], [-81.5, 11.75], [-81.0, 11.54], [-80.5, 11.75], [-80.25, 11.65], [-80.0, 11.75], [-79.47, 11.53], [-79.32, 11.18], [-79.25, 11.15], [-79.0, 11.25], [-78.47, 11.03], [-78.25, 10.5], [-78.35, 10.25], [-78.25, 10.0], [-78.47, 9.47], [-79.0, 9.25], [-79.25, 9.35], [-79.32, 9.32], [-79.47, 8.97], [-79.82, 8.82], [-79.97, 8.47], [-80.5, 8.25], [-81.03, 8.47], [-81.18, 8.82], [-81.25, 8.85], [-81.5, 8.75], [-82.03, 8.97], [-82.18, 9.32], [-82.53, 9.47], [-82.75, 10.0]]]]}, "2011-01-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.75, 10.0], [-82.53, 10.53], [-82.18, 10.68], [-82.15, 10.75], [-82.25, 11.0], [-82.03, 11.53], [-81.5, 11.75], [-80.97, 11.53], [-80.82, 11.18], [-80.5, 11.04], [-80.0, 11.25], [-79.75, 11.15], [-79.5, 11.25], [-79.25, 11.15], [-79.0, 11.25], [-78.47, 11.03], [-78.25, 10.5], [-78.35, 10.25], [-78.25, 10.0], [-78.47, 9.47], [-79.0, 9.25], [-79.25, 9.35], [-79.32, 9.32], [-79.47, 8.97], [-80.0, 8.75], [-80.25, 8.85], [-80.5, 8.75], [-80.75, 8.85], [-81.0, 8.75], [-81.25, 8.85], [-81.5, 8.75], [-82.03, 8.97], [-82.18, 9.32], [-82.53, 9.47], [-82.75, 10.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.163402613003541}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.3374688446263918}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.945061241078747, 24.612631979804007, 24.182315340441278, 24.561046599373242, 24.7712873779372, 24.6904189726622, 24.918097290514822]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.222504942806324, 22.908661159128656, 22.95849028384731, 22.928103355130872, 23.792193401921566, 23.796272184299767, 24.229302913436584]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.959670805601732, -1.017400677099488, -1.6500472048330352, -1.3888974141628205, -1.331709182442716, -1.3438060795280757, -1.133577453512243]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.0395590203678466, -1.1880381306827985, -2.163402613003541, -1.8427388176615977, -1.682405691278916, -1.6360823908187854, -1.3446353768075596]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4345123415288492, 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