{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:50.051082", "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": "2021-Sep-13_to_2021-Sep-17_186.0_53.5"}, "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": 2021090002001}, "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": "September 13 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 17 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 101964.64754728627}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": ["Bering Sea"]}, "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": 53.5}, "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": 186.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "186.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 176.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 186.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 52.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 54.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-179.18, 54.18], [-179.03, 54.53], [-178.5, 54.75], [-178.25, 54.65], [-178.0, 54.75], [-177.75, 54.65], [-177.5, 54.75], [-176.97, 54.53], [-176.82, 54.18], [-176.75, 54.15], [-176.5, 54.25], [-176.25, 54.15], [-176.18, 54.18], [-176.03, 54.53], [-175.5, 54.75], [-175.25, 54.65], [-175.0, 54.75], [-174.75, 54.65], [-174.5, 54.75], [-174.25, 54.65], [-174.0, 54.75], [-173.75, 54.65], [-173.5, 54.75], [-172.97, 54.53], [-172.75, 54.0], [-172.85, 53.75], [-172.75, 53.5], [-172.97, 52.97], [-173.5, 52.75], [-173.75, 52.85], [-174.0, 52.75], [-174.25, 52.85], [-174.32, 52.82], [-174.47, 52.47], [-174.82, 52.32], [-174.97, 51.97], [-175.5, 51.75], [-176.03, 51.97], [-176.2, 52.38], [-176.5, 52.25], [-176.75, 52.35], [-177.0, 52.25], [-177.25, 52.35], [-177.5, 52.25], [-177.75, 52.35], [-178.0, 52.25], [-178.25, 52.35], [-178.32, 52.32], [-178.47, 51.97], [-178.82, 51.82], [-178.97, 51.47], [-179.5, 51.25], [-180.0, 51.46], [-180.0, 51.75], [-180.0, 54.25], [-179.75, 54.15], [-179.5, 54.25], [-179.25, 54.15], [-179.18, 54.18]]], [[[175.97, 53.53], [176.5, 53.75], [176.75, 53.65], [177.0, 53.75], [177.25, 53.65], [177.5, 53.75], [177.75, 53.65], [178.0, 53.75], [178.25, 53.65], [178.32, 53.68], [178.47, 54.03], [179.0, 54.25], [179.25, 54.15], [179.5, 54.25], [179.75, 54.15], [180.0, 54.25], [180.0, 51.75], [180.0, 51.46], [179.97, 51.47], [179.82, 51.82], [179.75, 51.85], [179.5, 51.75], [179.25, 51.85], [179.18, 51.82], [179.03, 51.47], [178.5, 51.25], [177.97, 51.47], [177.82, 51.82], [177.75, 51.85], [177.5, 51.75], [177.25, 51.85], [177.0, 51.75], [176.75, 51.85], [176.5, 51.75], [176.25, 51.85], [176.0, 51.75], [175.47, 51.97], [175.25, 52.5], [175.47, 53.03], [175.82, 53.18], [175.97, 53.53]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Pacific-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-09-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[176.5, 53.75], [176.75, 53.65], [177.0, 53.75], [177.25, 53.65], [177.5, 53.75], [177.75, 53.65], [178.0, 53.75], [178.25, 53.65], [178.32, 53.68], [178.47, 54.03], [179.0, 54.25], [179.25, 54.15], [179.5, 54.25], [179.75, 54.15], [180.0, 54.25], [180.0, 51.75], [179.75, 51.85], [179.5, 51.75], [179.25, 51.85], [179.0, 51.75], [178.75, 51.85], [178.5, 51.75], [178.25, 51.85], [178.0, 51.75], [177.75, 51.85], [177.5, 51.75], [177.25, 51.85], [177.0, 51.75], [176.75, 51.85], [176.5, 51.75], [176.25, 51.85], [176.0, 51.75], [175.47, 51.97], [175.25, 52.5], [175.47, 53.03], [175.82, 53.18], [175.97, 53.53], [176.5, 53.75]]], [[[-180.0, 54.25], [-179.75, 54.15], [-179.5, 54.25], [-179.25, 54.15], [-179.0, 54.25], [-178.75, 54.15], [-178.68, 54.18], [-178.53, 54.53], [-178.0, 54.75], [-177.75, 54.65], [-177.5, 54.75], [-176.97, 54.53], [-176.82, 54.18], [-176.47, 54.03], [-176.32, 53.68], [-175.97, 53.53], [-175.75, 53.0], [-175.97, 52.47], [-176.5, 52.25], [-176.75, 52.35], [-177.0, 52.25], [-177.25, 52.35], [-177.5, 52.25], [-177.75, 52.35], [-178.0, 52.25], [-178.25, 52.35], [-178.32, 52.32], [-178.47, 51.97], [-179.0, 51.75], [-179.25, 51.85], [-179.5, 51.75], [-179.75, 51.85], [-180.0, 51.75], [-180.0, 54.25]]], [[[-175.53, 52.97], [-175.75, 53.5], [-175.53, 54.03], [-175.0, 54.25], [-174.75, 54.15], [-174.5, 54.25], [-174.25, 54.15], [-174.0, 54.25], [-173.47, 54.03], [-173.25, 53.5], [-173.47, 52.97], [-174.0, 52.75], [-174.25, 52.85], [-174.5, 52.75], [-174.75, 52.85], [-175.0, 52.75], [-175.53, 52.97]]]]}, "2021-09-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[175.97, 53.53], [176.5, 53.75], [176.75, 53.65], [177.0, 53.75], [177.25, 53.65], [177.5, 53.75], [177.75, 53.65], [178.0, 53.75], [178.25, 53.65], [178.32, 53.68], [178.47, 54.03], [179.0, 54.25], [179.25, 54.15], [179.5, 54.25], [179.75, 54.15], [180.0, 54.25], [180.0, 51.46], [179.97, 51.47], [179.82, 51.82], [179.75, 51.85], [179.5, 51.75], [179.25, 51.85], [179.18, 51.82], [179.03, 51.47], [178.5, 51.25], [177.97, 51.47], [177.82, 51.82], [177.75, 51.85], [177.5, 51.75], [177.25, 51.85], [177.0, 51.75], [176.75, 51.85], [176.5, 51.75], [176.25, 51.85], [176.0, 51.75], [175.47, 51.97], [175.25, 52.5], [175.47, 53.03], [175.82, 53.18], [175.97, 53.53]]], [[[-180.0, 54.25], [-179.75, 54.15], [-179.5, 54.25], [-179.25, 54.15], [-179.18, 54.18], [-179.03, 54.53], [-178.5, 54.75], [-178.25, 54.65], [-178.0, 54.75], [-177.75, 54.65], [-177.5, 54.75], [-176.97, 54.53], [-176.82, 54.18], [-176.75, 54.15], [-176.5, 54.25], [-176.25, 54.15], [-176.18, 54.18], [-176.03, 54.53], [-175.5, 54.75], [-174.97, 54.53], [-174.82, 54.18], [-174.75, 54.15], [-174.5, 54.25], [-174.25, 54.15], [-174.0, 54.25], [-173.75, 54.15], [-173.5, 54.25], [-172.97, 54.03], [-172.75, 53.5], [-172.97, 52.97], [-173.5, 52.75], [-173.75, 52.85], [-174.0, 52.75], [-174.25, 52.85], [-174.32, 52.82], [-174.47, 52.47], [-174.82, 52.32], [-174.97, 51.97], [-175.5, 51.75], [-176.03, 51.97], [-176.2, 52.38], [-176.5, 52.25], [-176.75, 52.35], [-177.0, 52.25], [-177.25, 52.35], [-177.5, 52.25], [-177.75, 52.35], [-178.0, 52.25], [-178.25, 52.35], [-178.32, 52.32], [-178.47, 51.97], [-178.82, 51.82], [-178.97, 51.47], [-179.5, 51.25], [-180.0, 51.46], [-180.0, 54.25]]]]}, "2021-09-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[175.97, 53.53], [176.5, 53.75], [176.75, 53.65], [177.0, 53.75], [177.25, 53.65], [177.5, 53.75], [177.75, 53.65], [178.0, 53.75], [178.25, 53.65], [178.32, 53.68], [178.47, 54.03], [179.0, 54.25], [179.25, 54.15], [179.5, 54.25], [179.75, 54.15], [180.0, 54.25], [180.0, 51.46], [179.97, 51.47], [179.82, 51.82], [179.75, 51.85], [179.5, 51.75], [179.25, 51.85], [179.18, 51.82], [179.03, 51.47], [178.5, 51.25], [177.97, 51.47], [177.82, 51.82], [177.75, 51.85], [177.5, 51.75], [177.25, 51.85], [177.0, 51.75], [176.75, 51.85], [176.5, 51.75], [176.25, 51.85], [176.0, 51.75], [175.47, 51.97], [175.25, 52.5], [175.47, 53.03], [175.82, 53.18], [175.97, 53.53]]], [[[-180.0, 54.25], [-179.75, 54.15], [-179.5, 54.25], [-179.25, 54.15], [-179.18, 54.18], [-179.03, 54.53], [-178.5, 54.75], [-178.25, 54.65], [-178.0, 54.75], [-177.75, 54.65], [-177.5, 54.75], [-176.97, 54.53], [-176.82, 54.18], [-176.75, 54.15], [-176.5, 54.25], [-176.25, 54.15], [-176.18, 54.18], [-176.03, 54.53], [-175.5, 54.75], [-175.25, 54.65], [-175.0, 54.75], [-174.75, 54.65], [-174.5, 54.75], [-174.25, 54.65], [-174.0, 54.75], [-173.75, 54.65], [-173.5, 54.75], [-172.97, 54.53], [-172.75, 54.0], [-172.85, 53.75], [-172.75, 53.5], [-172.97, 52.97], [-173.5, 52.75], [-173.75, 52.85], [-174.0, 52.75], [-174.25, 52.85], [-174.32, 52.82], [-174.47, 52.47], [-174.82, 52.32], [-174.97, 51.97], [-175.5, 51.75], [-176.03, 51.97], [-176.2, 52.38], [-176.5, 52.25], [-176.75, 52.35], [-177.0, 52.25], [-177.25, 52.35], [-177.5, 52.25], [-177.75, 52.35], [-178.0, 52.25], [-178.25, 52.35], [-178.32, 52.32], [-178.47, 51.97], [-178.82, 51.82], [-178.97, 51.47], [-179.5, 51.25], [-180.0, 51.46], [-180.0, 54.25]]]]}, "2021-09-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[176.0, 51.75], [175.47, 51.97], [175.25, 52.5], [175.47, 53.03], [176.0, 53.25], [176.53, 53.03], [176.75, 52.5], [176.53, 51.97], [176.0, 51.75]]], [[[177.5, 53.25], [178.03, 53.03], [178.2, 52.63], [178.32, 52.68], [178.35, 52.75], [178.25, 53.0], [178.35, 53.25], [178.25, 53.5], [178.47, 54.03], [179.0, 54.25], [179.25, 54.15], [179.5, 54.25], [179.75, 54.15], [180.0, 54.25], [180.0, 51.46], [179.97, 51.47], [179.82, 51.82], [179.75, 51.85], [179.5, 51.75], [179.25, 51.85], [179.18, 51.82], [179.03, 51.47], [178.5, 51.25], [177.97, 51.47], [177.8, 51.88], [177.5, 51.75], [176.97, 51.97], [176.75, 52.5], [176.97, 53.03], [177.5, 53.25]]], [[[-180.0, 54.25], [-179.75, 54.15], [-179.5, 54.25], [-179.25, 54.15], [-179.18, 54.18], [-179.03, 54.53], [-178.5, 54.75], [-178.25, 54.65], [-178.0, 54.75], [-177.75, 54.65], [-177.5, 54.75], [-176.97, 54.53], [-176.82, 54.18], [-176.75, 54.15], [-176.5, 54.25], [-176.25, 54.15], [-176.18, 54.18], [-176.03, 54.53], [-175.5, 54.75], [-175.25, 54.65], [-175.0, 54.75], [-174.75, 54.65], [-174.5, 54.75], [-174.25, 54.65], [-174.0, 54.75], [-173.75, 54.65], [-173.5, 54.75], [-172.97, 54.53], [-172.75, 54.0], [-172.85, 53.75], [-172.75, 53.5], [-172.97, 52.97], [-173.5, 52.75], [-173.75, 52.85], [-174.0, 52.75], [-174.25, 52.85], [-174.32, 52.82], [-174.47, 52.47], [-174.82, 52.32], [-174.97, 51.97], [-175.5, 51.75], [-176.03, 51.97], [-176.2, 52.38], [-176.5, 52.25], [-176.75, 52.35], [-177.0, 52.25], [-177.25, 52.35], [-177.5, 52.25], [-177.75, 52.35], [-178.0, 52.25], [-178.25, 52.35], [-178.32, 52.32], [-178.47, 51.97], [-178.82, 51.82], [-178.97, 51.47], [-179.5, 51.25], [-180.0, 51.46], [-180.0, 54.25]]]]}, "2021-09-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-175.5, 53.25], [-176.03, 53.47], [-176.25, 54.0], [-176.03, 54.53], [-175.5, 54.75], [-175.25, 54.65], [-175.0, 54.75], [-174.75, 54.65], [-174.5, 54.75], [-174.25, 54.65], [-174.0, 54.75], [-173.75, 54.65], [-173.5, 54.75], [-172.97, 54.53], [-172.75, 54.0], [-172.85, 53.75], [-172.75, 53.5], [-172.97, 52.97], [-173.5, 52.75], [-173.75, 52.85], [-174.0, 52.75], [-174.53, 52.97], [-174.68, 53.32], [-174.75, 53.35], [-175.0, 53.25], [-175.25, 53.35], [-175.5, 53.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.1417961423840097}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.3137073656397564}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [10.566435582685529, 10.433511570548603, 10.917957834878905, 10.43059785765331, 10.269840194171422]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.909898763835201, 10.8142914598223, 11.454618056036225, 10.809366471962278, 10.333284312159662]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.173229871411344, 1.1034247762255585, 1.6541027306849474, 1.2832671281788288, 1.1739956049222948]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.3920786972086603, 1.2966987251556361, 2.1417961423840097, 1.6126182505277598, 1.2452200866769658]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.53327706213042, 1.4304651911737742, 2.098058044458672, 1.5752398343630618, 1.3462706952445116]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8967727881976122, 1.7147148874722007, 2.7394638168228878, 1.875403920027352, 1.410856062283776]}}