{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:16.298676", "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-Dec-29_to_2011-Dec-31_253.0_40.5"}, "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": 2011120002835}, "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 29 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 31 2011"}, "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": 62240.46354853589}, "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": 40.5}, "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": 253.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "253.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 249.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 254.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 36.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 41.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-12-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-110.53, 41.03], [-110.0, 41.25], [-109.5, 41.04], [-109.18, 41.18], [-109.03, 41.53], [-108.5, 41.75], [-108.25, 41.65], [-108.0, 41.75], [-107.47, 41.53], [-107.32, 41.18], [-107.25, 41.15], [-107.0, 41.25], [-106.47, 41.03], [-106.32, 40.68], [-106.25, 40.65], [-106.0, 40.75], [-105.47, 40.53], [-105.25, 40.0], [-105.35, 39.75], [-105.32, 39.68], [-104.97, 39.53], [-104.75, 39.0], [-104.97, 38.47], [-105.32, 38.32], [-105.47, 37.97], [-105.87, 37.8], [-105.75, 37.5], [-105.85, 37.25], [-105.75, 37.0], [-105.97, 36.47], [-106.5, 36.25], [-107.03, 36.47], [-107.18, 36.82], [-107.5, 36.96], [-108.0, 36.75], [-108.53, 36.97], [-108.75, 37.5], [-108.65, 37.75], [-108.75, 38.0], [-108.53, 38.53], [-108.0, 38.75], [-107.75, 38.65], [-107.62, 38.7], [-107.75, 39.0], [-107.65, 39.25], [-107.7, 39.38], [-108.0, 39.25], [-108.53, 39.47], [-108.7, 39.88], [-108.82, 39.82], [-108.97, 39.47], [-109.5, 39.25], [-109.75, 39.35], [-110.0, 39.25], [-110.53, 39.47], [-110.75, 40.0], [-110.65, 40.25], [-110.75, 40.5], [-110.53, 41.03]]]]}, "2011-12-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-110.53, 41.03], [-110.0, 41.25], [-109.5, 41.04], [-109.18, 41.18], [-109.03, 41.53], [-108.5, 41.75], [-108.25, 41.65], [-108.0, 41.75], [-107.47, 41.53], [-107.32, 41.18], [-107.25, 41.15], [-107.0, 41.25], [-106.47, 41.03], [-106.32, 40.68], [-106.25, 40.65], [-106.0, 40.75], [-105.47, 40.53], [-105.25, 40.0], [-105.35, 39.75], [-105.32, 39.68], [-104.97, 39.53], [-104.75, 39.0], [-104.97, 38.47], [-105.32, 38.32], [-105.47, 37.97], [-105.87, 37.8], [-105.75, 37.5], [-105.85, 37.25], [-105.75, 37.0], [-105.97, 36.47], [-106.5, 36.25], [-107.03, 36.47], [-107.18, 36.82], [-107.5, 36.96], [-108.0, 36.75], [-108.53, 36.97], [-108.75, 37.5], [-108.65, 37.75], [-108.75, 38.0], [-108.53, 38.53], [-108.0, 38.75], [-107.75, 38.65], [-107.62, 38.7], [-107.75, 39.0], [-107.65, 39.25], [-107.7, 39.38], [-108.0, 39.25], [-108.53, 39.47], [-108.7, 39.88], [-108.82, 39.82], [-108.97, 39.47], [-109.5, 39.25], [-109.75, 39.35], [-110.0, 39.25], [-110.53, 39.47], [-110.75, 40.0], [-110.65, 40.25], [-110.75, 40.5], [-110.53, 41.03]]]]}, "2011-12-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-110.53, 41.03], [-110.0, 41.25], [-109.5, 41.04], [-109.18, 41.18], [-109.03, 41.53], [-108.5, 41.75], [-108.25, 41.65], [-108.0, 41.75], [-107.47, 41.53], [-107.32, 41.18], [-107.25, 41.15], [-107.0, 41.25], [-106.47, 41.03], [-106.32, 40.68], [-106.25, 40.65], [-106.0, 40.75], [-105.47, 40.53], [-105.25, 40.0], [-105.35, 39.75], [-105.32, 39.68], [-104.97, 39.53], [-104.75, 39.0], [-104.97, 38.47], [-105.32, 38.32], [-105.47, 37.97], [-105.87, 37.8], [-105.75, 37.5], [-105.85, 37.25], [-105.75, 37.0], [-105.97, 36.47], [-106.5, 36.25], [-107.03, 36.47], [-107.18, 36.82], [-107.5, 36.96], [-108.0, 36.75], [-108.53, 36.97], [-108.75, 37.5], [-108.65, 37.75], [-108.75, 38.0], [-108.53, 38.53], [-108.0, 38.75], [-107.75, 38.65], [-107.62, 38.7], [-107.75, 39.0], [-107.65, 39.25], [-107.7, 39.38], [-108.0, 39.25], [-108.53, 39.47], [-108.7, 39.88], [-108.82, 39.82], [-108.97, 39.47], [-109.5, 39.25], [-109.75, 39.35], [-110.0, 39.25], [-110.53, 39.47], [-110.75, 40.0], [-110.65, 40.25], [-110.75, 40.5], [-110.53, 41.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 10.87594401848719}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.139781167180504}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-2.2977959234158334, -1.4590437747075953, -2.28671549120088]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.1030779431453652, 4.719817374519607, 5.7285184217655]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.834497371698098, 7.712994756785992, 6.871851373057437]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [10.87594401848719, 9.535364239242028, 10.472137427435314]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.692849305390638, 1.830416591303977, 1.5333699632965527]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.3144695033106975, 2.1869720083341715, 1.8113639991715809]}}