{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:06.875273", "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-Mar-31_to_2011-Apr-02_250.5_43.5"}, "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": 2011030002710}, "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": "March 31 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 02 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": 77927.85565094573}, "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": 43.5}, "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": 250.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "250.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 245.75}, "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": 42.25}, "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": {"2011-03-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-114.53, 41.97], [-114.75, 42.5], [-114.53, 43.03], [-114.0, 43.25], [-113.75, 43.15], [-113.68, 43.18], [-113.53, 43.53], [-113.18, 43.68], [-113.03, 44.03], [-112.62, 44.2], [-112.75, 44.5], [-112.65, 44.75], [-112.75, 45.0], [-112.53, 45.53], [-112.18, 45.68], [-112.03, 46.03], [-111.5, 46.25], [-110.97, 46.03], [-110.82, 45.68], [-110.75, 45.65], [-110.5, 45.75], [-110.25, 45.65], [-110.0, 45.75], [-109.75, 45.65], [-109.5, 45.75], [-108.97, 45.53], [-108.82, 45.18], [-108.47, 45.03], [-108.25, 44.5], [-108.35, 44.25], [-108.25, 44.0], [-108.35, 43.75], [-108.25, 43.5], [-108.47, 42.97], [-108.82, 42.82], [-108.97, 42.47], [-109.5, 42.25], [-109.75, 42.35], [-109.82, 42.32], [-109.97, 41.97], [-110.5, 41.75], [-111.03, 41.97], [-111.2, 42.38], [-111.5, 42.25], [-112.0, 42.46], [-112.5, 42.25], [-112.75, 42.35], [-112.82, 42.32], [-112.97, 41.97], [-113.5, 41.75], [-113.75, 41.85], [-114.0, 41.75], [-114.53, 41.97]]]]}, "2011-04-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-114.53, 41.97], [-114.75, 42.5], [-114.53, 43.03], [-114.0, 43.25], [-113.75, 43.15], [-113.68, 43.18], [-113.53, 43.53], [-113.18, 43.68], [-113.03, 44.03], [-112.62, 44.2], [-112.75, 44.5], [-112.65, 44.75], [-112.75, 45.0], [-112.53, 45.53], [-112.18, 45.68], [-112.03, 46.03], [-111.5, 46.25], [-110.97, 46.03], [-110.82, 45.68], [-110.75, 45.65], [-110.5, 45.75], [-110.25, 45.65], [-110.0, 45.75], [-109.75, 45.65], [-109.5, 45.75], [-108.97, 45.53], [-108.82, 45.18], [-108.47, 45.03], [-108.25, 44.5], [-108.35, 44.25], [-108.25, 44.0], [-108.35, 43.75], [-108.25, 43.5], [-108.47, 42.97], [-108.82, 42.82], [-108.97, 42.47], [-109.5, 42.25], [-109.75, 42.35], [-109.82, 42.32], [-109.97, 41.97], [-110.5, 41.75], [-111.03, 41.97], [-111.2, 42.38], [-111.5, 42.25], [-112.0, 42.46], [-112.5, 42.25], [-112.75, 42.35], [-112.82, 42.32], [-112.97, 41.97], [-113.5, 41.75], [-113.75, 41.85], [-114.0, 41.75], [-114.53, 41.97]]]]}, "2011-04-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-114.53, 41.97], [-114.75, 42.5], [-114.53, 43.03], [-114.0, 43.25], [-113.75, 43.15], [-113.68, 43.18], [-113.53, 43.53], [-113.18, 43.68], [-113.03, 44.03], [-112.62, 44.2], [-112.75, 44.5], [-112.65, 44.75], [-112.75, 45.0], [-112.53, 45.53], [-112.18, 45.68], [-112.03, 46.03], [-111.5, 46.25], [-110.97, 46.03], [-110.82, 45.68], [-110.75, 45.65], [-110.5, 45.75], [-110.25, 45.65], [-110.0, 45.75], [-109.75, 45.65], [-109.5, 45.75], [-108.97, 45.53], [-108.82, 45.18], [-108.47, 45.03], [-108.25, 44.5], [-108.35, 44.25], [-108.25, 44.0], [-108.35, 43.75], [-108.25, 43.5], [-108.47, 42.97], [-108.82, 42.82], [-108.97, 42.47], [-109.5, 42.25], [-109.75, 42.35], [-109.82, 42.32], [-109.97, 41.97], [-110.5, 41.75], [-111.03, 41.97], [-111.2, 42.38], [-111.5, 42.25], [-112.0, 42.46], [-112.5, 42.25], [-112.75, 42.35], [-112.82, 42.32], [-112.97, 41.97], [-113.5, 41.75], [-113.75, 41.85], [-114.0, 41.75], [-114.53, 41.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.051521638341626}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.332478273916008}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [4.124511478023237, 4.412136939475772, 5.55981169532663]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.830651051390134, 12.159334476684023, 13.676314061898779]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.951327822198839, 5.098489506462262, 5.947617493086929]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.599423623724931, 6.784143011978813, 7.051521638341626]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3983338696499743, 1.4045230057394325, 1.6127689512484753]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6913642385936907, 1.6738132997310113, 1.8066653187879242]}}