{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:42.290126", "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-Jan-25_to_2011-Jan-28_243.0_52.0"}, "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": 2011010002556}, "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 25 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 28 2011"}, "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": 55292.413515398875}, "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": ["Canada"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.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": 52.0}, "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": 243.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "243.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 239.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 244.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 50.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 53.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-01-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-121.03, 52.47], [-121.25, 53.0], [-121.03, 53.53], [-120.5, 53.75], [-120.25, 53.65], [-120.0, 53.75], [-119.47, 53.53], [-119.25, 53.0], [-119.47, 52.47], [-120.0, 52.25], [-120.25, 52.35], [-120.5, 52.25], [-121.03, 52.47]]]]}, "2011-01-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-121.03, 53.53], [-120.5, 53.75], [-120.25, 53.65], [-120.0, 53.75], [-119.47, 53.53], [-119.32, 53.18], [-119.25, 53.15], [-119.0, 53.25], [-118.75, 53.15], [-118.5, 53.25], [-118.25, 53.15], [-118.0, 53.25], [-117.75, 53.15], [-117.5, 53.25], [-117.25, 53.15], [-117.0, 53.25], [-116.47, 53.03], [-116.32, 52.68], [-115.97, 52.53], [-115.82, 52.18], [-115.47, 52.03], [-115.25, 51.5], [-115.35, 51.25], [-115.25, 51.0], [-115.47, 50.47], [-116.0, 50.25], [-116.5, 50.46], [-117.0, 50.25], [-117.25, 50.35], [-117.5, 50.25], [-118.03, 50.47], [-118.18, 50.82], [-118.25, 50.85], [-118.5, 50.75], [-118.75, 50.85], [-119.0, 50.75], [-119.25, 50.85], [-119.5, 50.75], [-119.75, 50.85], [-120.0, 50.75], [-120.53, 50.97], [-120.68, 51.32], [-121.03, 51.47], [-121.25, 52.0], [-121.04, 52.5], [-121.25, 53.0], [-121.03, 53.53]]]]}, "2011-01-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-121.03, 53.53], [-120.5, 53.75], [-120.25, 53.65], [-120.0, 53.75], [-119.47, 53.53], [-119.32, 53.18], [-119.25, 53.15], [-119.0, 53.25], [-118.75, 53.15], [-118.5, 53.25], [-118.25, 53.15], [-118.0, 53.25], [-117.75, 53.15], [-117.5, 53.25], [-117.25, 53.15], [-117.0, 53.25], [-116.47, 53.03], [-116.32, 52.68], [-115.97, 52.53], [-115.82, 52.18], [-115.47, 52.03], [-115.25, 51.5], [-115.35, 51.25], [-115.25, 51.0], [-115.47, 50.47], [-116.0, 50.25], [-116.5, 50.46], [-117.0, 50.25], [-117.25, 50.35], [-117.5, 50.25], [-118.03, 50.47], [-118.18, 50.82], [-118.25, 50.85], [-118.5, 50.75], [-118.75, 50.85], [-119.0, 50.75], [-119.25, 50.85], [-119.5, 50.75], [-119.75, 50.85], [-120.0, 50.75], [-120.53, 50.97], [-120.68, 51.32], [-121.03, 51.47], [-121.25, 52.0], [-121.04, 52.5], [-121.25, 53.0], [-121.03, 53.53]]]]}, "2011-01-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-121.25, 52.0], [-121.03, 52.53], [-120.5, 52.75], [-120.25, 52.65], [-120.18, 52.68], [-120.03, 53.03], [-119.5, 53.25], [-119.25, 53.15], [-119.0, 53.25], [-118.75, 53.15], [-118.5, 53.25], [-118.25, 53.15], [-118.0, 53.25], [-117.75, 53.15], [-117.5, 53.25], [-117.25, 53.15], [-117.0, 53.25], [-116.47, 53.03], [-116.32, 52.68], [-115.97, 52.53], [-115.82, 52.18], [-115.47, 52.03], [-115.25, 51.5], [-115.35, 51.25], [-115.25, 51.0], [-115.47, 50.47], [-116.0, 50.25], [-116.5, 50.46], [-117.0, 50.25], [-117.25, 50.35], [-117.5, 50.25], [-118.03, 50.47], [-118.18, 50.82], [-118.25, 50.85], [-118.5, 50.75], [-118.75, 50.85], [-119.0, 50.75], [-119.25, 50.85], [-119.5, 50.75], [-119.75, 50.85], [-120.0, 50.75], [-120.53, 50.97], [-120.68, 51.32], [-121.03, 51.47], [-121.25, 52.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 10.96800029369922}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 8.037911336502264}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-3.812937753045844, -2.596825345750858, -1.6933281664556716, -2.3498734785038664]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-3.7809872910844433, 0.3339602907223025, 0.49146927022150066, 1.1377523380243133]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.6713762744540475, 7.7758250173861985, 8.59577072917907, 7.82145396579245]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.916816337880334, 9.097971520233216, 10.96800029369922, 9.640202263673018]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.150347708863094, 1.29891361298412, 1.410774075929461, 1.2979134660152285]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.1657124310433216, 1.4772982116154179, 1.6196323719120702, 1.620341700183849]}}