{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:36:24.479019", "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": "2023-Aug-28_to_2023-Aug-30_313.0_69.0"}, "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": 2023080002274}, "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": "August 28 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 30 2023"}, "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": 64054.73349252848}, "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": ["Greenland"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Greenland/Iceland"]}, "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": 69.0}, "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": 313.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "313.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 310.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 314.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 65.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 71.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-08-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-50.25, 71.0], [-50.03, 71.53], [-49.5, 71.75], [-49.25, 71.65], [-49.0, 71.75], [-48.75, 71.65], [-48.5, 71.75], [-48.25, 71.65], [-48.0, 71.75], [-47.47, 71.53], [-47.32, 71.18], [-47.25, 71.15], [-47.0, 71.25], [-46.47, 71.03], [-46.32, 70.68], [-45.97, 70.53], [-45.75, 70.0], [-45.85, 69.75], [-45.82, 69.68], [-45.47, 69.53], [-45.32, 69.18], [-44.97, 69.03], [-44.75, 68.5], [-44.85, 68.25], [-44.75, 68.0], [-44.97, 67.47], [-45.32, 67.32], [-45.47, 66.97], [-46.0, 66.75], [-46.25, 66.85], [-46.32, 66.82], [-46.47, 66.47], [-47.0, 66.25], [-47.25, 66.35], [-47.32, 66.32], [-47.47, 65.97], [-48.0, 65.75], [-48.25, 65.85], [-48.32, 65.82], [-48.47, 65.47], [-49.0, 65.25], [-49.53, 65.47], [-49.75, 66.0], [-49.65, 66.25], [-49.75, 66.5], [-49.65, 66.75], [-49.75, 67.0], [-49.65, 67.25], [-49.75, 67.5], [-49.65, 67.75], [-49.75, 68.0], [-49.53, 68.53], [-49.18, 68.68], [-49.15, 68.75], [-49.25, 69.0], [-49.15, 69.25], [-49.18, 69.32], [-49.53, 69.47], [-49.75, 70.0], [-49.65, 70.25], [-49.68, 70.32], [-50.03, 70.47], [-50.25, 71.0]]]]}, "2023-08-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-50.25, 71.0], [-50.03, 71.53], [-49.5, 71.75], [-49.25, 71.65], [-49.0, 71.75], [-48.75, 71.65], [-48.5, 71.75], [-48.25, 71.65], [-48.0, 71.75], [-47.47, 71.53], [-47.32, 71.18], [-47.25, 71.15], [-47.0, 71.25], [-46.47, 71.03], [-46.32, 70.68], [-45.97, 70.53], [-45.75, 70.0], [-45.85, 69.75], [-45.82, 69.68], [-45.47, 69.53], [-45.32, 69.18], [-44.97, 69.03], [-44.75, 68.5], [-44.85, 68.25], [-44.75, 68.0], [-44.97, 67.47], [-45.32, 67.32], [-45.47, 66.97], [-46.0, 66.75], [-46.25, 66.85], [-46.32, 66.82], [-46.47, 66.47], [-47.0, 66.25], [-47.25, 66.35], [-47.32, 66.32], [-47.47, 65.97], [-48.0, 65.75], [-48.25, 65.85], [-48.32, 65.82], [-48.47, 65.47], [-49.0, 65.25], [-49.53, 65.47], [-49.75, 66.0], [-49.65, 66.25], [-49.75, 66.5], [-49.65, 66.75], [-49.75, 67.0], [-49.65, 67.25], [-49.75, 67.5], [-49.65, 67.75], [-49.75, 68.0], [-49.53, 68.53], [-49.18, 68.68], [-49.15, 68.75], [-49.25, 69.0], [-49.15, 69.25], [-49.18, 69.32], [-49.53, 69.47], [-49.75, 70.0], [-49.65, 70.25], [-49.68, 70.32], [-50.03, 70.47], [-50.25, 71.0]]]]}, "2023-08-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-50.25, 71.0], [-50.03, 71.53], [-49.5, 71.75], [-49.25, 71.65], [-49.0, 71.75], [-48.75, 71.65], [-48.5, 71.75], [-48.25, 71.65], [-48.0, 71.75], [-47.47, 71.53], [-47.32, 71.18], [-47.25, 71.15], [-47.0, 71.25], [-46.47, 71.03], [-46.32, 70.68], [-45.97, 70.53], [-45.75, 70.0], [-45.85, 69.75], [-45.82, 69.68], [-45.47, 69.53], [-45.32, 69.18], [-44.97, 69.03], [-44.75, 68.5], [-44.85, 68.25], [-44.75, 68.0], [-44.97, 67.47], [-45.32, 67.32], [-45.47, 66.97], [-46.0, 66.75], [-46.25, 66.85], [-46.32, 66.82], [-46.47, 66.47], [-47.0, 66.25], [-47.25, 66.35], [-47.32, 66.32], [-47.47, 65.97], [-48.0, 65.75], [-48.25, 65.85], [-48.32, 65.82], [-48.47, 65.47], [-49.0, 65.25], [-49.53, 65.47], [-49.75, 66.0], [-49.65, 66.25], [-49.75, 66.5], [-49.65, 66.75], [-49.75, 67.0], [-49.65, 67.25], [-49.75, 67.5], [-49.65, 67.75], [-49.75, 68.0], [-49.53, 68.53], [-49.18, 68.68], [-49.15, 68.75], [-49.25, 69.0], [-49.15, 69.25], [-49.18, 69.32], [-49.53, 69.47], [-49.75, 70.0], [-49.65, 70.25], [-49.68, 70.32], [-50.03, 70.47], [-50.25, 71.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.43633258647759}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.693217221001322}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-1.3432064007322992, -1.1011017972570016, -0.6074055411509107]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [2.051423778554067, 2.2054117488193583, 1.946141268532358]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.2770995444397615, 5.611906405888644, 6.190645712675574]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.986154806084755, 6.800687216344272, 7.43633258647759]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4852202181594751, 1.5433169355124174, 1.6757158614153005]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5871502253431113, 1.6797500213085539, 1.8932037388259613]}}