{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:12:35.260359", "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": "2018-Apr-26_to_2018-Apr-29_248.5_40.0"}, "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": 2018040002644}, "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": "April 26 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 29 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 54221.736107059}, "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": 40.0}, "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": 248.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "248.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 247.75}, "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": 37.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 42.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-04-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-112.03, 40.53], [-111.5, 40.75], [-110.97, 40.53], [-110.75, 40.0], [-110.85, 39.75], [-110.75, 39.5], [-110.96, 39.0], [-110.75, 38.5], [-110.97, 37.97], [-111.5, 37.75], [-111.75, 37.85], [-112.0, 37.75], [-112.53, 37.97], [-112.75, 38.5], [-112.53, 39.03], [-112.12, 39.2], [-112.25, 39.5], [-112.15, 39.75], [-112.25, 40.0], [-112.03, 40.53]]]]}, "2018-04-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-112.65, 39.25], [-112.75, 39.5], [-112.53, 40.03], [-112.18, 40.18], [-112.03, 40.53], [-111.68, 40.68], [-111.53, 41.03], [-111.0, 41.25], [-110.7, 41.13], [-110.65, 41.25], [-110.75, 41.5], [-110.65, 41.75], [-110.75, 42.0], [-110.65, 42.25], [-110.75, 42.5], [-110.53, 43.03], [-110.0, 43.25], [-109.5, 43.04], [-109.0, 43.25], [-108.47, 43.03], [-108.25, 42.5], [-108.47, 41.97], [-108.82, 41.82], [-108.85, 41.75], [-108.82, 41.68], [-108.47, 41.53], [-108.25, 41.0], [-108.47, 40.47], [-109.0, 40.25], [-109.25, 40.35], [-109.32, 40.32], [-109.47, 39.97], [-109.82, 39.82], [-109.97, 39.47], [-110.32, 39.32], [-110.35, 39.25], [-110.25, 39.0], [-110.47, 38.47], [-110.82, 38.32], [-110.85, 38.25], [-110.75, 38.0], [-110.97, 37.47], [-111.5, 37.25], [-112.03, 37.47], [-112.18, 37.82], [-112.53, 37.97], [-112.75, 38.5], [-112.65, 38.75], [-112.75, 39.0], [-112.65, 39.25]]]]}, "2018-04-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-112.65, 39.25], [-112.75, 39.5], [-112.53, 40.03], [-112.18, 40.18], [-112.03, 40.53], [-111.68, 40.68], [-111.53, 41.03], [-111.0, 41.25], [-110.7, 41.13], [-110.65, 41.25], [-110.75, 41.5], [-110.65, 41.75], [-110.75, 42.0], [-110.65, 42.25], [-110.75, 42.5], [-110.53, 43.03], [-110.0, 43.25], [-109.5, 43.04], [-109.0, 43.25], [-108.47, 43.03], [-108.25, 42.5], [-108.47, 41.97], [-108.82, 41.82], [-108.85, 41.75], [-108.82, 41.68], [-108.47, 41.53], [-108.25, 41.0], [-108.47, 40.47], [-109.0, 40.25], [-109.25, 40.35], [-109.32, 40.32], [-109.47, 39.97], [-109.82, 39.82], [-109.97, 39.47], [-110.32, 39.32], [-110.35, 39.25], [-110.25, 39.0], [-110.47, 38.47], [-110.82, 38.32], [-110.85, 38.25], [-110.75, 38.0], [-110.97, 37.47], [-111.5, 37.25], [-112.03, 37.47], [-112.18, 37.82], [-112.53, 37.97], [-112.75, 38.5], [-112.65, 38.75], [-112.75, 39.0], [-112.65, 39.25]]]]}, "2018-04-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-112.53, 40.03], [-112.18, 40.18], [-112.03, 40.53], [-111.68, 40.68], [-111.53, 41.03], [-111.0, 41.25], [-110.7, 41.13], [-110.65, 41.25], [-110.75, 41.5], [-110.65, 41.75], [-110.75, 42.0], [-110.65, 42.25], [-110.75, 42.5], [-110.53, 43.03], [-110.0, 43.25], [-109.5, 43.04], [-109.0, 43.25], [-108.47, 43.03], [-108.25, 42.5], [-108.47, 41.97], [-108.82, 41.82], [-108.85, 41.75], [-108.82, 41.68], [-108.47, 41.53], [-108.25, 41.0], [-108.47, 40.47], [-109.0, 40.25], [-109.25, 40.35], [-109.32, 40.32], [-109.47, 39.97], [-109.82, 39.82], [-109.97, 39.47], [-110.32, 39.32], [-110.35, 39.25], [-110.25, 39.0], [-110.47, 38.47], [-110.82, 38.32], [-110.85, 38.25], [-110.75, 38.0], [-110.97, 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