{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:34:57.384492", "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-Apr-07_to_2023-Apr-09_255.0_64.0"}, "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": 2023040001516}, "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": "April 07 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 09 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": 58081.20797167511}, "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.E.North-America", "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": 64.0}, "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": 255.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "255.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 251.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 257.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 60.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 64.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-04-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.03, 62.03], [-108.68, 62.18], [-108.53, 62.53], [-108.0, 62.75], [-107.75, 62.65], [-107.5, 62.75], [-107.25, 62.65], [-107.18, 62.68], [-107.03, 63.03], [-106.68, 63.18], [-106.65, 63.25], [-106.75, 63.5], [-106.53, 64.03], [-106.18, 64.18], [-106.03, 64.53], [-105.5, 64.75], [-105.25, 64.65], [-105.0, 64.75], [-104.75, 64.65], [-104.5, 64.75], [-104.25, 64.65], [-104.0, 64.75], [-103.75, 64.65], [-103.5, 64.75], [-103.25, 64.65], [-103.0, 64.75], [-102.75, 64.65], [-102.5, 64.75], [-101.97, 64.53], [-101.75, 64.0], [-101.97, 63.47], [-102.32, 63.32], [-102.47, 62.97], [-102.82, 62.82], [-102.97, 62.47], [-103.32, 62.32], [-103.47, 61.97], [-103.82, 61.82], [-103.97, 61.47], [-104.5, 61.25], [-104.75, 61.35], [-105.0, 61.25], [-105.25, 61.35], [-105.32, 61.32], [-105.47, 60.97], [-106.0, 60.75], [-106.25, 60.85], [-106.5, 60.75], [-106.75, 60.85], [-107.0, 60.75], [-107.25, 60.85], [-107.5, 60.75], [-107.75, 60.85], [-107.82, 60.82], [-107.97, 60.47], [-108.5, 60.25], [-109.03, 60.47], [-109.25, 61.0], [-109.15, 61.25], [-109.25, 61.5], [-109.03, 62.03]]]]}, "2023-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.03, 62.03], [-108.68, 62.18], [-108.53, 62.53], [-108.0, 62.75], [-107.75, 62.65], [-107.5, 62.75], [-107.25, 62.65], [-107.18, 62.68], [-107.03, 63.03], [-106.68, 63.18], [-106.65, 63.25], [-106.75, 63.5], [-106.53, 64.03], [-106.18, 64.18], [-106.03, 64.53], [-105.5, 64.75], [-105.25, 64.65], [-105.0, 64.75], [-104.75, 64.65], [-104.5, 64.75], [-104.25, 64.65], [-104.0, 64.75], [-103.75, 64.65], [-103.5, 64.75], [-103.25, 64.65], [-103.0, 64.75], [-102.75, 64.65], [-102.5, 64.75], [-101.97, 64.53], [-101.75, 64.0], [-101.97, 63.47], [-102.32, 63.32], [-102.47, 62.97], [-102.82, 62.82], [-102.97, 62.47], [-103.32, 62.32], [-103.47, 61.97], [-103.82, 61.82], [-103.97, 61.47], [-104.5, 61.25], [-104.75, 61.35], [-105.0, 61.25], [-105.25, 61.35], [-105.32, 61.32], [-105.47, 60.97], [-106.0, 60.75], [-106.25, 60.85], [-106.5, 60.75], [-106.75, 60.85], [-107.0, 60.75], [-107.25, 60.85], [-107.5, 60.75], [-107.75, 60.85], [-107.82, 60.82], [-107.97, 60.47], [-108.5, 60.25], [-109.03, 60.47], [-109.25, 61.0], [-109.15, 61.25], [-109.25, 61.5], [-109.03, 62.03]]]]}, "2023-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.03, 62.03], [-108.68, 62.18], [-108.53, 62.53], [-108.0, 62.75], [-107.75, 62.65], [-107.5, 62.75], [-107.25, 62.65], [-107.18, 62.68], [-107.03, 63.03], [-106.68, 63.18], [-106.65, 63.25], [-106.75, 63.5], [-106.53, 64.03], [-106.18, 64.18], [-106.03, 64.53], [-105.5, 64.75], [-105.25, 64.65], [-105.0, 64.75], [-104.75, 64.65], [-104.5, 64.75], [-104.25, 64.65], [-104.0, 64.75], [-103.75, 64.65], [-103.5, 64.75], [-103.25, 64.65], [-103.0, 64.75], [-102.75, 64.65], [-102.5, 64.75], [-101.97, 64.53], [-101.75, 64.0], [-101.97, 63.47], [-102.32, 63.32], [-102.47, 62.97], [-102.82, 62.82], [-102.97, 62.47], [-103.32, 62.32], [-103.47, 61.97], [-103.82, 61.82], [-103.97, 61.47], [-104.5, 61.25], [-104.75, 61.35], [-105.0, 61.25], [-105.25, 61.35], [-105.32, 61.32], [-105.47, 60.97], [-106.0, 60.75], [-106.25, 60.85], [-106.5, 60.75], [-106.75, 60.85], [-107.0, 60.75], [-107.25, 60.85], [-107.5, 60.75], [-107.75, 60.85], [-107.82, 60.82], [-107.97, 60.47], [-108.5, 60.25], [-109.03, 60.47], [-109.25, 61.0], [-109.15, 61.25], [-109.25, 61.5], [-109.03, 62.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 16.076928966889113}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 12.210113271317612}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-2.6663095654306517, 0.7426163778573027, -2.8707430078167135]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [1.1202141574444227, 4.134655169958307, 1.2883303334762672]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [11.373206709500543, 14.576992786795888, 10.680140317656408]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [12.644553013185032, 16.076928966889113, 12.048782682636443]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5612334684630167, 2.0097393500842577, 1.4966682464147003]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.847464260849396, 2.3787380997422636, 1.6447745008817631]}}