{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:25.982731", "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-Dec-10_to_2010-Dec-15_249.0_39.0"}, "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": 2010120002027}, "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": "December 10 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 15 2010"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 69532.8373895003}, "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": ["W.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": 39.0}, "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": 249.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "249.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 248.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 251.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 37.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 41.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-12-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-111.53, 39.53], [-111.18, 39.68], [-111.03, 40.03], 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[-111.65, 38.25], [-111.75, 38.5]], [[-109.8, 38.38], [-109.85, 38.25], [-109.8, 38.13], [-109.5, 38.25], [-109.8, 38.38]]]]}, "2010-12-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-112.03, 39.03], [-111.68, 39.18], [-111.53, 39.53], [-111.18, 39.68], [-111.15, 39.75], [-111.18, 39.82], [-111.53, 39.97], [-111.75, 40.5], [-111.53, 41.03], [-111.0, 41.25], [-110.75, 41.15], [-110.68, 41.18], [-110.65, 41.25], [-110.75, 41.5], [-110.53, 42.03], [-110.0, 42.25], [-109.47, 42.03], [-109.25, 41.5], [-109.35, 41.25], [-109.25, 41.0], [-109.35, 40.75], [-109.25, 40.5], [-109.35, 40.25], [-109.3, 40.13], [-109.0, 40.25], [-108.47, 40.03], [-108.25, 39.5], [-108.47, 38.97], [-108.82, 38.82], [-108.97, 38.47], [-109.5, 38.25], [-108.97, 38.03], [-108.75, 37.5], [-108.97, 36.97], [-109.5, 36.75], [-110.03, 36.97], [-110.2, 37.38], [-110.32, 37.32], [-110.47, 36.97], [-111.0, 36.75], [-111.25, 36.85], [-111.5, 36.75], [-112.03, 36.97], [-112.25, 37.5], [-112.04, 38.0], [-112.25, 38.5], [-112.03, 39.03]], [[-109.8, 38.38], [-109.85, 38.25], [-109.8, 38.13], [-109.5, 38.25], [-109.8, 38.38]]]]}, "2010-12-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-112.15, 38.25], [-112.25, 38.5], [-112.03, 39.03], [-111.68, 39.18], [-111.53, 39.53], [-111.18, 39.68], [-111.15, 39.75], [-111.18, 39.82], [-111.53, 39.97], [-111.75, 40.5], [-111.53, 41.03], [-111.0, 41.25], [-110.75, 41.15], [-110.68, 41.18], [-110.65, 41.25], [-110.75, 41.5], [-110.53, 42.03], [-110.0, 42.25], [-109.47, 42.03], [-109.25, 41.5], [-109.35, 41.25], [-109.25, 41.0], [-109.35, 40.75], [-109.32, 40.68], [-109.25, 40.65], [-109.0, 40.75], [-108.47, 40.53], [-108.25, 40.0], [-108.35, 39.75], [-108.25, 39.5], [-108.35, 39.25], [-108.25, 39.0], [-108.35, 38.75], [-108.25, 38.5], [-108.47, 37.97], [-108.82, 37.82], [-108.85, 37.75], [-108.75, 37.5], [-108.97, 36.97], [-109.5, 36.75], [-110.03, 36.97], [-110.18, 37.32], [-110.25, 37.35], [-110.32, 37.32], [-110.47, 36.97], 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6.161460693710257, 7.351706932706502]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.457175073511337, 6.701228519448875, 7.646021106825231, 8.109017322946727, 7.3578023366926, 10.062930919295127]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3143793129736367, 1.3372506995118085, 1.350693479546742, 1.5000096681045556, 1.4643646941394861, 1.8588801702865139]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5660191127382321, 1.6107321187392074, 1.6785845721383894, 2.033399012786749, 1.7673514553356124, 2.5571777380887073]}}