{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:10:03.438059", "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-Jan-28_to_2018-Jan-30_242.0_44.0"}, "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": 2018010002623}, "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 28 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 30 2018"}, "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": 83181.04161820348}, "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": 44.0}, "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": 242.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "242.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 238.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 243.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 43.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 46.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-01-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-122.03, 45.03], [-121.68, 45.18], [-121.65, 45.25], [-121.75, 45.5], [-121.53, 46.03], [-121.0, 46.25], [-120.75, 46.15], [-120.5, 46.25], [-120.25, 46.15], [-120.0, 46.25], [-119.75, 46.15], [-119.5, 46.25], [-119.25, 46.15], [-119.18, 46.18], [-119.15, 46.25], [-119.25, 46.5], [-119.03, 47.03], [-118.5, 47.25], [-118.0, 47.04], [-117.5, 47.25], [-117.25, 47.15], [-117.0, 47.25], [-116.47, 47.03], [-116.25, 46.5], [-116.35, 46.25], [-116.25, 46.0], [-116.47, 45.47], [-117.0, 45.25], [-117.25, 45.35], [-117.32, 45.32], [-117.35, 45.25], [-117.25, 45.0], [-117.35, 44.75], [-117.32, 44.68], [-116.97, 44.53], [-116.75, 44.0], [-116.85, 43.75], [-116.75, 43.5], [-116.97, 42.97], [-117.5, 42.75], [-117.75, 42.85], [-118.0, 42.75], [-118.25, 42.85], [-118.5, 42.75], [-119.03, 42.97], [-119.25, 43.5], [-119.12, 43.8], [-119.25, 43.85], [-119.5, 43.75], [-119.75, 43.85], [-119.82, 43.82], [-119.97, 43.47], [-120.32, 43.32], [-120.47, 42.97], [-121.0, 42.75], [-121.25, 42.85], [-121.5, 42.75], [-122.03, 42.97], [-122.25, 43.5], [-122.04, 44.0], [-122.25, 44.5], [-122.03, 45.03]]]]}, "2018-01-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-122.03, 45.03], [-121.68, 45.18], [-121.65, 45.25], [-121.75, 45.5], [-121.53, 46.03], [-121.0, 46.25], [-120.75, 46.15], [-120.5, 46.25], [-120.25, 46.15], [-120.0, 46.25], [-119.75, 46.15], [-119.5, 46.25], [-119.25, 46.15], [-119.18, 46.18], [-119.15, 46.25], [-119.25, 46.5], [-119.03, 47.03], [-118.5, 47.25], [-118.0, 47.04], [-117.5, 47.25], [-117.25, 47.15], [-117.0, 47.25], [-116.47, 47.03], [-116.25, 46.5], [-116.35, 46.25], [-116.25, 46.0], [-116.47, 45.47], [-117.0, 45.25], [-117.25, 45.35], [-117.32, 45.32], [-117.35, 45.25], [-117.25, 45.0], [-117.35, 44.75], [-117.32, 44.68], [-116.97, 44.53], [-116.75, 44.0], [-116.85, 43.75], [-116.75, 43.5], [-116.97, 42.97], [-117.5, 42.75], [-117.75, 42.85], [-118.0, 42.75], [-118.25, 42.85], [-118.5, 42.75], [-119.03, 42.97], [-119.25, 43.5], [-119.12, 43.8], [-119.25, 43.85], [-119.5, 43.75], [-119.75, 43.85], [-119.82, 43.82], [-119.97, 43.47], [-120.32, 43.32], [-120.47, 42.97], [-121.0, 42.75], [-121.25, 42.85], [-121.5, 42.75], [-122.03, 42.97], [-122.25, 43.5], [-122.04, 44.0], [-122.25, 44.5], [-122.03, 45.03]]]]}, "2018-01-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-122.03, 45.03], [-121.68, 45.18], [-121.65, 45.25], [-121.75, 45.5], [-121.53, 46.03], [-121.0, 46.25], [-120.75, 46.15], [-120.5, 46.25], [-120.25, 46.15], [-120.0, 46.25], [-119.75, 46.15], [-119.5, 46.25], [-119.25, 46.15], [-119.18, 46.18], [-119.15, 46.25], [-119.25, 46.5], [-119.03, 47.03], [-118.5, 47.25], [-118.0, 47.04], [-117.5, 47.25], [-117.25, 47.15], [-117.0, 47.25], [-116.47, 47.03], [-116.25, 46.5], [-116.35, 46.25], [-116.25, 46.0], [-116.47, 45.47], [-117.0, 45.25], [-117.25, 45.35], [-117.32, 45.32], [-117.35, 45.25], [-117.25, 45.0], [-117.35, 44.75], [-117.32, 44.68], [-116.97, 44.53], [-116.75, 44.0], [-116.85, 43.75], [-116.75, 43.5], [-116.97, 42.97], [-117.5, 42.75], [-117.75, 42.85], [-118.0, 42.75], [-118.25, 42.85], [-118.5, 42.75], [-119.03, 42.97], [-119.25, 43.5], [-119.12, 43.8], [-119.25, 43.85], [-119.5, 43.75], [-119.75, 43.85], [-119.82, 43.82], [-119.97, 43.47], [-120.32, 43.32], [-120.47, 42.97], [-121.0, 42.75], [-121.25, 42.85], [-121.5, 42.75], [-122.03, 42.97], [-122.25, 43.5], [-122.04, 44.0], [-122.25, 44.5], [-122.03, 45.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 8.479695117413598}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.892471068703475}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [5.692206877058936, 5.635915476357411, 5.90797494725615]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.04912305187554, 10.06029547356053, 9.735198565266671]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.824781808187613, 5.78668861451292, 6.0659427834098905]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.341611951071513, 7.155039480408448, 8.479695117413598]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.388839938027588, 1.3301562530377777, 1.3376074591457157]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.620698847070429, 1.5744802669341775, 1.726844590000178]}}