{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:34:02.593764", "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": "2023-Jan-17_to_2023-Jan-20_280.5_36.5"}, "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": 2023010002322}, "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 17 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 20 2023"}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 146294.80200481962}, "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": ["United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.North-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": []}, "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": 36.5}, "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": 280.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "280.5\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": 282.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 30.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 38.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-01-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.0, 39.25], [-79.75, 39.15], [-79.5, 39.25], [-78.97, 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[-78.47, 38.53], [-78.32, 38.18], [-78.25, 38.15], [-78.0, 38.25], [-77.47, 38.03], [-77.25, 37.5], [-77.37, 37.2], [-76.97, 37.03], [-76.75, 36.5], [-76.85, 36.25], [-76.75, 36.0], [-76.96, 35.5], [-76.75, 35.0], [-76.97, 34.47], [-77.5, 34.25], [-77.75, 34.35], [-77.82, 34.32], [-77.97, 33.97], [-78.32, 33.82], [-78.47, 33.47], [-78.82, 33.32], [-78.97, 32.97], [-79.32, 32.82], [-79.47, 32.47], [-80.0, 32.25], [-80.25, 32.35], [-80.32, 32.32], [-80.47, 31.97], [-80.82, 31.82], [-80.97, 31.47], [-81.32, 31.32], [-81.35, 31.25], [-81.25, 31.0], [-81.47, 30.47], [-82.0, 30.25], [-82.53, 30.47], [-82.75, 31.0], [-82.65, 31.25], [-82.75, 31.5], [-82.65, 31.75]]]]}, "2023-01-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.65, 31.75], [-82.75, 32.0], [-82.54, 32.5], [-82.75, 33.0], [-82.53, 33.53], [-82.18, 33.68], [-82.15, 33.75], [-82.25, 34.0], [-82.03, 34.53], [-81.5, 34.75], [-81.0, 34.54], [-80.5, 34.75], [-80.25, 34.65], [-80.0, 34.75], [-79.75, 34.65], 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"value": [6.484808313891563, 18.89877916454742, 19.09881559918182, 17.729385136646727]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.909396382757905, 8.202711202302595, 9.125550998821488, 8.349900581577373]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [9.293102261615388, 9.87189515174083, 10.09698456952691, 10.249248095758162]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2758838834777122, 1.5276776137239072, 1.7409719480074837, 1.6332044169812547]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.370006146510769, 1.821184587202441, 2.0022433627205203, 1.8923632419249599]}}