{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:32.420570", "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-Sep-25_to_2011-Sep-29_255.0_34.0"}, "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": 2011090002689}, "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": "September 25 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 29 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 56110.98901187515}, "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": ["C.North-America", "N.Central-America", "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": 34.0}, "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": 255.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "255.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 253.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 256.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 32.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 36.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-09-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.65, 33.75], [-105.75, 34.0], [-105.65, 34.25], [-105.75, 34.5], [-105.53, 35.03], [-105.0, 35.25], [-104.75, 35.15], [-104.5, 35.25], [-103.97, 35.03], [-103.75, 34.5], [-103.85, 34.25], [-103.75, 34.0], [-103.85, 33.75], [-103.75, 33.5], [-103.96, 33.0], [-103.75, 32.5], [-103.97, 31.97], [-104.5, 31.75], [-105.03, 31.97], [-105.18, 32.32], [-105.53, 32.47], [-105.75, 33.0], [-105.65, 33.25], [-105.75, 33.5], [-105.65, 33.75]]]]}, "2011-09-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.68, 33.32], [-106.03, 33.47], [-106.25, 34.0], [-106.03, 34.53], [-105.68, 34.68], [-105.65, 34.75], [-105.75, 35.0], [-105.53, 35.53], [-105.0, 35.75], [-104.75, 35.65], [-104.5, 35.75], [-103.97, 35.53], [-103.75, 35.0], [-103.85, 34.75], [-103.75, 34.5], [-103.85, 34.25], [-103.75, 34.0], [-103.85, 33.75], [-103.75, 33.5], [-103.85, 33.25], [-103.75, 33.0], [-103.85, 32.75], [-103.75, 32.5], [-103.97, 31.97], [-104.5, 31.75], [-105.0, 31.96], [-105.5, 31.75], [-106.03, 31.97], [-106.25, 32.5], [-106.03, 33.03], [-105.68, 33.18], [-105.65, 33.25], [-105.68, 33.32]]]]}, "2011-09-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-107.25, 35.5], [-107.03, 36.03], [-106.5, 36.25], [-106.25, 36.15], [-106.0, 36.25], [-105.47, 36.03], [-105.3, 35.63], [-105.18, 35.68], [-105.03, 36.03], [-104.5, 36.25], [-104.25, 36.15], [-104.18, 36.18], [-104.03, 36.53], [-103.5, 36.75], [-102.97, 36.53], [-102.75, 36.0], [-102.85, 35.75], [-102.75, 35.5], [-102.97, 34.97], [-103.37, 34.8], [-103.25, 34.5], [-103.47, 33.97], [-103.82, 33.82], [-103.85, 33.75], [-103.75, 33.5], [-103.85, 33.25], [-103.75, 33.0], [-103.85, 32.75], [-103.75, 32.5], [-103.97, 31.97], [-104.5, 31.75], [-105.0, 31.96], [-105.5, 31.75], [-106.03, 31.97], [-106.25, 32.5], [-106.03, 33.03], [-105.68, 33.18], [-105.65, 33.25], [-105.68, 33.32], [-106.03, 33.47], [-106.25, 34.0], [-106.15, 34.25], [-106.18, 34.32], [-106.53, 34.47], [-106.68, 34.82], [-107.03, 34.97], [-107.25, 35.5]]]]}, "2011-09-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-107.25, 35.5], [-107.03, 36.03], [-106.5, 36.25], [-106.25, 36.15], [-106.0, 36.25], [-105.47, 36.03], [-105.3, 35.63], [-105.18, 35.68], [-105.03, 36.03], [-104.5, 36.25], [-104.25, 36.15], [-104.18, 36.18], [-104.03, 36.53], [-103.5, 36.75], [-102.97, 36.53], [-102.75, 36.0], [-102.85, 35.75], [-102.75, 35.5], [-102.97, 34.97], [-103.37, 34.8], [-103.25, 34.5], [-103.47, 33.97], [-103.82, 33.82], [-103.85, 33.75], [-103.75, 33.5], [-103.85, 33.25], [-103.75, 33.0], [-103.85, 32.75], [-103.75, 32.5], [-103.97, 31.97], [-104.5, 31.75], [-105.0, 31.96], [-105.5, 31.75], [-106.03, 31.97], [-106.25, 32.5], [-106.03, 33.03], [-105.68, 33.18], [-105.65, 33.25], [-105.68, 33.32], [-106.03, 33.47], [-106.25, 34.0], [-106.15, 34.25], [-106.18, 34.32], [-106.53, 34.47], [-106.68, 34.82], [-107.03, 34.97], [-107.25, 35.5]]]]}, "2011-09-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.97, 31.97], [-104.5, 31.75], [-105.0, 31.96], [-105.5, 31.75], [-106.03, 31.97], [-106.25, 32.5], [-106.03, 33.03], [-105.5, 33.25], [-105.0, 33.04], [-104.5, 33.25], [-103.97, 33.03], [-103.75, 32.5], [-103.97, 31.97]]], [[[-107.03, 36.03], [-106.5, 36.25], [-106.25, 36.15], [-106.0, 36.25], [-105.47, 36.03], [-105.3, 35.63], [-105.18, 35.68], [-105.03, 36.03], [-104.5, 36.25], [-104.25, 36.15], [-104.18, 36.18], [-104.03, 36.53], [-103.5, 36.75], [-102.97, 36.53], [-102.75, 36.0], [-102.85, 35.75], [-102.75, 35.5], [-102.97, 34.97], [-103.37, 34.8], [-103.25, 34.5], [-103.47, 33.97], [-103.82, 33.82], [-103.97, 33.47], [-104.5, 33.25], [-104.75, 33.35], [-105.0, 33.25], [-105.53, 33.47], [-105.68, 33.82], [-106.03, 33.97], [-106.18, 34.32], [-106.53, 34.47], [-106.68, 34.82], [-107.03, 34.97], [-107.25, 35.5], [-107.03, 36.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.59920746511483}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.453566166390105}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.70850103808118, 24.601330402941812, 23.558566712746938, 23.505425597920464, 22.917087191402743]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.416588526611974, 27.214301778293304, 26.50421046293593, 26.18877149216962, 25.99152390457033]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.328395209531898, 4.697832059783611, 4.497544197356647, 4.507360800632011, 4.1991492491056475]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.527296081946474, 5.272080178606529, 5.503088556211196, 5.59920746511483, 4.803168814079868]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.304972966878852, 1.4610273295494842, 1.4193998783456547, 1.4844377290896924, 1.4209655678811197]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4139601408079885, 1.6685245857336923, 1.6817666947116454, 1.7582863092259073, 1.5462059986281844]}}