{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:34.148082", "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": "2013-Jan-25_to_2013-Jan-27_249.5_43.0"}, "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": 2013010002372}, "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 25 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 27 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 51377.34414349918}, "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": 43.0}, "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": 249.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "249.5\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": 41.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 45.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-01-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-112.03, 43.53], [-111.68, 43.68], [-111.65, 43.75], [-111.75, 44.0], [-111.65, 44.25], [-111.75, 44.5], [-111.65, 44.75], [-111.75, 45.0], [-111.53, 45.53], [-111.18, 45.68], [-111.03, 46.03], [-110.5, 46.25], [-109.97, 46.03], [-109.82, 45.68], [-109.47, 45.53], [-109.32, 45.18], [-108.97, 45.03], [-108.75, 44.5], [-108.85, 44.25], [-108.82, 44.18], [-108.47, 44.03], [-108.25, 43.5], [-108.47, 42.97], [-109.0, 42.75], [-109.25, 42.85], [-109.32, 42.82], [-109.47, 42.47], [-109.82, 42.32], [-109.97, 41.97], [-110.32, 41.82], [-110.47, 41.47], [-111.0, 41.25], [-111.53, 41.47], [-111.68, 41.82], [-112.03, 41.97], [-112.25, 42.5], [-112.15, 42.75], [-112.25, 43.0], [-112.03, 43.53]]]]}, "2013-01-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-112.03, 43.53], [-111.68, 43.68], [-111.65, 43.75], [-111.75, 44.0], [-111.65, 44.25], [-111.75, 44.5], [-111.65, 44.75], [-111.75, 45.0], [-111.53, 45.53], [-111.18, 45.68], [-111.03, 46.03], [-110.5, 46.25], [-109.97, 46.03], [-109.82, 45.68], [-109.47, 45.53], [-109.32, 45.18], [-108.97, 45.03], [-108.75, 44.5], [-108.85, 44.25], [-108.82, 44.18], [-108.47, 44.03], [-108.25, 43.5], [-108.47, 42.97], [-109.0, 42.75], [-109.25, 42.85], [-109.32, 42.82], [-109.47, 42.47], [-109.82, 42.32], [-109.97, 41.97], [-110.32, 41.82], [-110.47, 41.47], [-111.0, 41.25], [-111.53, 41.47], [-111.68, 41.82], [-112.03, 41.97], [-112.25, 42.5], [-112.15, 42.75], [-112.25, 43.0], [-112.03, 43.53]]]]}, "2013-01-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-112.03, 43.53], [-111.68, 43.68], [-111.65, 43.75], [-111.75, 44.0], [-111.65, 44.25], [-111.75, 44.5], [-111.65, 44.75], [-111.75, 45.0], [-111.53, 45.53], [-111.18, 45.68], [-111.03, 46.03], [-110.5, 46.25], [-109.97, 46.03], [-109.82, 45.68], [-109.47, 45.53], [-109.32, 45.18], [-108.97, 45.03], [-108.75, 44.5], [-108.85, 44.25], [-108.82, 44.18], [-108.47, 44.03], [-108.25, 43.5], [-108.47, 42.97], [-109.0, 42.75], [-109.25, 42.85], [-109.32, 42.82], [-109.47, 42.47], [-109.82, 42.32], [-109.97, 41.97], [-110.32, 41.82], [-110.47, 41.47], [-111.0, 41.25], [-111.53, 41.47], [-111.68, 41.82], [-112.03, 41.97], [-112.25, 42.5], [-112.15, 42.75], [-112.25, 43.0], [-112.03, 43.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 8.680218299312969}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.398645056602737}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-2.506465419827805, -0.28601363950878067, -1.4516462729752675]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-0.3780248600317577, 1.9308200682991128, -0.004334058995311807]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.323212724708427, 7.552268006158319, 6.320454438941463]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.18076301413339, 8.680218299312969, 7.338616031120637]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3735676161522654, 1.9106316786332902, 1.5202417322159467]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.535557170223995, 2.1853511083675756, 1.7364895125440682]}}