{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:16.190358", "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": "2017-Oct-16_to_2017-Oct-20_253.5_47.0"}, "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": 2017100002098}, "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": "October 16 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 20 2017"}, "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": 51415.28761706698}, "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": 47.0}, "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": 253.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "253.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 249.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 254.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 44.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 47.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-10-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-110.0, 47.75], [-109.47, 47.53], [-109.25, 47.0], [-109.47, 46.47], [-110.0, 46.25], [-110.53, 46.47], [-110.75, 47.0], [-110.53, 47.53], [-110.0, 47.75]]]]}, "2017-10-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-110.0, 47.75], [-109.47, 47.53], [-109.32, 47.18], [-109.25, 47.15], [-109.0, 47.25], [-108.47, 47.03], [-108.32, 46.68], [-108.25, 46.65], [-108.18, 46.68], [-108.03, 47.03], [-107.5, 47.25], [-107.25, 47.15], [-107.18, 47.18], [-107.03, 47.53], [-106.5, 47.75], [-105.97, 47.53], [-105.82, 47.18], [-105.75, 47.15], [-105.5, 47.25], [-104.97, 47.03], [-104.75, 46.5], [-104.97, 45.97], [-105.32, 45.82], [-105.47, 45.47], [-105.82, 45.32], [-105.97, 44.97], [-106.5, 44.75], [-107.03, 44.97], [-107.18, 45.32], [-107.25, 45.35], [-107.5, 45.25], [-107.75, 45.35], [-108.0, 45.25], [-108.25, 45.35], [-108.5, 45.25], [-109.03, 45.47], [-109.18, 45.82], [-109.25, 45.85], [-109.5, 45.75], [-109.75, 45.85], [-110.0, 45.75], [-110.25, 45.85], [-110.5, 45.75], [-111.03, 45.97], [-111.25, 46.5], [-111.03, 47.03], [-110.68, 47.18], [-110.53, 47.53], [-110.0, 47.75]]]]}, "2017-10-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-110.0, 47.75], [-109.47, 47.53], [-109.32, 47.18], [-109.25, 47.15], [-109.0, 47.25], [-108.47, 47.03], [-108.32, 46.68], [-108.25, 46.65], [-108.18, 46.68], [-108.03, 47.03], [-107.5, 47.25], [-107.25, 47.15], [-107.18, 47.18], [-107.03, 47.53], [-106.5, 47.75], [-105.97, 47.53], [-105.82, 47.18], [-105.75, 47.15], [-105.5, 47.25], [-104.97, 47.03], [-104.75, 46.5], [-104.97, 45.97], [-105.32, 45.82], [-105.35, 45.75], [-105.25, 45.5], [-105.35, 45.25], [-105.25, 45.0], [-105.47, 44.47], [-106.0, 44.25], [-106.53, 44.47], [-106.68, 44.82], [-106.75, 44.85], [-107.0, 44.75], [-107.25, 44.85], [-107.5, 44.75], [-107.75, 44.85], [-108.0, 44.75], [-108.53, 44.97], [-108.68, 45.32], [-108.75, 45.35], [-109.0, 45.25], [-109.53, 45.47], [-109.68, 45.82], [-109.75, 45.85], [-110.0, 45.75], [-110.25, 45.85], [-110.5, 45.75], [-111.03, 45.97], [-111.25, 46.5], [-111.03, 47.03], [-110.68, 47.18], [-110.53, 47.53], [-110.0, 47.75]]]]}, "2017-10-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-110.0, 47.75], [-109.47, 47.53], [-109.32, 47.18], [-109.25, 47.15], [-109.0, 47.25], [-108.47, 47.03], [-108.32, 46.68], [-108.25, 46.65], [-108.18, 46.68], [-108.03, 47.03], [-107.5, 47.25], [-107.25, 47.15], [-107.18, 47.18], [-107.03, 47.53], [-106.5, 47.75], [-105.97, 47.53], [-105.82, 47.18], [-105.75, 47.15], [-105.5, 47.25], [-104.97, 47.03], [-104.75, 46.5], [-104.97, 45.97], [-105.32, 45.82], [-105.35, 45.75], [-105.25, 45.5], [-105.35, 45.25], [-105.25, 45.0], [-105.47, 44.47], [-106.0, 44.25], [-106.53, 44.47], [-106.68, 44.82], [-106.75, 44.85], [-107.0, 44.75], [-107.25, 44.85], [-107.5, 44.75], [-107.75, 44.85], [-108.0, 44.75], [-108.53, 44.97], [-108.68, 45.32], [-108.75, 45.35], [-109.0, 45.25], [-109.53, 45.47], [-109.68, 45.82], [-109.75, 45.85], [-110.0, 45.75], [-110.25, 45.85], [-110.5, 45.75], [-111.03, 45.97], [-111.25, 46.5], [-111.03, 47.03], [-110.68, 47.18], [-110.53, 47.53], [-110.0, 47.75]]]]}, "2017-10-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-110.25, 46.5], [-110.03, 47.03], [-109.5, 47.25], [-109.25, 47.15], [-109.0, 47.25], [-108.47, 47.03], [-108.32, 46.68], [-108.25, 46.65], [-108.18, 46.68], [-108.03, 47.03], [-107.5, 47.25], [-107.25, 47.15], [-107.18, 47.18], [-107.03, 47.53], [-106.5, 47.75], [-105.97, 47.53], [-105.75, 47.0], [-105.85, 46.75], [-105.82, 46.68], [-105.47, 46.53], [-105.25, 46.0], [-105.35, 45.75], [-105.25, 45.5], [-105.35, 45.25], [-105.25, 45.0], [-105.47, 44.47], [-106.0, 44.25], [-106.53, 44.47], [-106.68, 44.82], [-106.75, 44.85], [-107.0, 44.75], [-107.25, 44.85], [-107.5, 44.75], [-107.75, 44.85], [-108.0, 44.75], [-108.53, 44.97], [-108.68, 45.32], [-108.75, 45.35], [-109.0, 45.25], [-109.53, 45.47], [-109.68, 45.82], [-110.03, 45.97], [-110.25, 46.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 8.460169468324636}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.511714065804788}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.693235474770233, 14.693592555195096, 14.224703292126208, 14.918240260862149, 14.661327718248799]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.693235474770233, 17.047681224323355, 15.331666116120516, 17.00874672464778, 16.063860826896473]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.072275184997295, 6.609516429881966, 6.058771586187336, 6.915037412891974, 6.504483816257268]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.072275184997295, 8.33920263117102, 7.310555138156019, 8.460169468324636, 8.204429554308547]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4259338969863617, 1.6214557135472125, 1.4788941033194254, 1.6701111247350149, 1.4933892075246848]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4259338969863617, 1.9959148500893689, 1.9060013067944739, 1.952641011298079, 1.870112058627548]}}