{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:07.095948", "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": "2015-May-29_to_2015-Jun-01_242.5_46.5"}, "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": 2015050002802}, "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": "May 29 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 01 2015"}, "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": 64446.13137652409}, "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": 46.5}, "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": 242.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "242.5\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": 44.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 48.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-05-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-122.03, 45.53], [-121.5, 45.75], [-121.2, 45.63], [-121.03, 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47.53], [-119.68, 47.68], [-119.53, 48.03], [-119.18, 48.18], [-119.03, 48.53], [-118.5, 48.75], [-117.97, 48.53], [-117.8, 48.13], [-117.5, 48.25], [-117.25, 48.15], [-117.0, 48.25], [-116.47, 48.03], [-116.25, 47.5], [-116.47, 46.97], [-116.82, 46.82], [-116.85, 46.75], [-116.75, 46.5], [-116.97, 45.97], [-117.5, 45.75], [-117.75, 45.85], [-117.82, 45.82], [-117.85, 45.75], [-117.75, 45.5], [-117.97, 44.97], [-118.32, 44.82], [-118.47, 44.47], [-118.82, 44.32], [-118.97, 43.97], [-119.5, 43.75], [-120.0, 43.96], [-120.5, 43.75], [-120.75, 43.85], [-121.0, 43.75], [-121.25, 43.85], [-121.5, 43.75], [-122.03, 43.97], [-122.25, 44.5], [-122.15, 44.75], [-122.25, 45.0], [-122.03, 45.53]], [[-118.18, 47.18], [-118.15, 47.25], [-118.2, 47.38], [-118.32, 47.32], [-118.35, 47.25], [-118.32, 47.18], [-118.25, 47.15], [-118.18, 47.18]]]]}, "2015-05-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-122.03, 45.53], [-121.5, 45.75], [-121.2, 45.63], [-121.03, 46.03], [-120.62, 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44.47], [-119.75, 45.0], [-119.53, 45.53], [-119.0, 45.75], [-118.47, 45.53], [-118.25, 45.0], [-118.47, 44.47], [-119.0, 44.25], [-119.53, 44.47]]], [[[-119.25, 48.0], [-119.03, 48.53], [-118.5, 48.75], [-117.97, 48.53], [-117.8, 48.13], [-117.5, 48.25], [-117.25, 48.15], [-117.0, 48.25], [-116.47, 48.03], [-116.25, 47.5], [-116.47, 46.97], [-116.82, 46.82], [-116.85, 46.75], [-116.75, 46.5], [-116.97, 45.97], [-117.5, 45.75], [-118.03, 45.97], [-118.25, 46.5], [-118.15, 46.75], [-118.25, 47.0], [-118.15, 47.25], [-118.2, 47.38], [-118.5, 47.25], [-119.03, 47.47], [-119.25, 48.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 8.205334820337157}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.514980980513915}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.091883922569025, 23.30250715126681, 23.451564471914594, 20.732602299506823]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.12895791681757, 27.914053770218914, 27.415520695541034, 22.515222820273664]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.578266673704933, 6.660731460729594, 6.618039452899542, 4.986150598147806]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [8.205334820337157, 7.959637969902417, 7.4776937961162275, 5.338742500118258]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.7030705641967674, 1.7308452649044341, 1.7100554368569112, 1.440986850726728]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.1061009319374815, 2.087163197449246, 1.9916486630776042, 1.5677721387067767]}}