{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:23:09.210570", "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-Jan-31_to_2021-Feb-02_241.0_46.0"}, "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": 2021010002776}, "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 31 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 02 2021"}, "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": 53129.49089159386}, "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": 46.0}, "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": 241.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "241.0\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": 44.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 48.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-01-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-121.03, 46.03], [-120.5, 46.25], [-120.25, 46.15], [-120.18, 46.18], [-120.15, 46.25], [-120.25, 46.5], [-120.15, 46.75], [-120.25, 47.0], [-120.03, 47.53], [-119.68, 47.68], [-119.65, 47.75], [-119.75, 48.0], [-119.53, 48.53], [-119.0, 48.75], [-118.75, 48.65], [-118.5, 48.75], [-117.97, 48.53], [-117.8, 48.13], [-117.5, 48.25], [-117.25, 48.15], [-117.0, 48.25], [-116.75, 48.15], [-116.5, 48.25], [-115.97, 48.03], [-115.75, 47.5], [-115.85, 47.25], [-115.82, 47.18], [-115.47, 47.03], [-115.25, 46.5], [-115.47, 45.97], [-116.0, 45.75], [-116.53, 45.97], [-116.68, 46.32], [-116.75, 46.35], [-117.0, 46.25], [-117.25, 46.35], [-117.32, 46.32], [-117.46, 46.0], [-117.25, 45.5], [-117.47, 44.97], [-118.0, 44.75], [-118.5, 44.96], [-119.0, 44.75], [-119.25, 44.85], [-119.5, 44.75], [-119.75, 44.85], [-119.82, 44.82], [-119.97, 44.47], [-120.5, 44.25], [-121.03, 44.47], [-121.25, 45.0], [-121.15, 45.25], [-121.25, 45.5], [-121.03, 46.03]], [[-118.18, 47.18], [-118.15, 47.25], [-118.2, 47.38], [-118.32, 47.32], [-118.35, 47.25], [-118.32, 47.18], [-118.25, 47.15], [-118.18, 47.18]]]]}, "2021-02-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-121.03, 46.03], [-120.5, 46.25], [-120.25, 46.15], [-120.18, 46.18], [-120.15, 46.25], [-120.25, 46.5], [-120.15, 46.75], [-120.25, 47.0], [-120.03, 47.53], [-119.68, 47.68], [-119.65, 47.75], [-119.75, 48.0], [-119.53, 48.53], [-119.0, 48.75], [-118.75, 48.65], [-118.5, 48.75], [-117.97, 48.53], [-117.8, 48.13], [-117.5, 48.25], [-117.25, 48.15], [-117.0, 48.25], [-116.75, 48.15], [-116.5, 48.25], [-115.97, 48.03], [-115.75, 47.5], [-115.85, 47.25], [-115.82, 47.18], [-115.47, 47.03], [-115.25, 46.5], [-115.47, 45.97], [-116.0, 45.75], [-116.53, 45.97], [-116.68, 46.32], [-116.75, 46.35], [-117.0, 46.25], [-117.25, 46.35], [-117.32, 46.32], [-117.46, 46.0], [-117.25, 45.5], [-117.47, 44.97], [-118.0, 44.75], [-118.5, 44.96], [-119.0, 44.75], [-119.25, 44.85], [-119.5, 44.75], [-119.75, 44.85], [-119.82, 44.82], [-119.97, 44.47], [-120.5, 44.25], [-121.03, 44.47], [-121.25, 45.0], [-121.15, 45.25], [-121.25, 45.5], [-121.03, 46.03]], [[-118.18, 47.18], [-118.15, 47.25], [-118.2, 47.38], [-118.32, 47.32], [-118.35, 47.25], [-118.32, 47.18], [-118.25, 47.15], [-118.18, 47.18]]]]}, "2021-02-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-121.03, 46.03], [-120.5, 46.25], [-120.25, 46.15], [-120.18, 46.18], [-120.15, 46.25], [-120.25, 46.5], [-120.15, 46.75], [-120.25, 47.0], [-120.03, 47.53], [-119.68, 47.68], [-119.65, 47.75], [-119.75, 48.0], [-119.53, 48.53], [-119.0, 48.75], [-118.75, 48.65], [-118.5, 48.75], [-117.97, 48.53], [-117.8, 48.13], [-117.5, 48.25], [-117.25, 48.15], [-117.0, 48.25], [-116.75, 48.15], [-116.5, 48.25], [-115.97, 48.03], [-115.75, 47.5], [-115.85, 47.25], [-115.82, 47.18], [-115.47, 47.03], [-115.25, 46.5], [-115.47, 45.97], [-116.0, 45.75], [-116.53, 45.97], [-116.68, 46.32], [-116.75, 46.35], [-117.0, 46.25], [-117.25, 46.35], [-117.32, 46.32], [-117.46, 46.0], [-117.25, 45.5], [-117.47, 44.97], [-118.0, 44.75], [-118.5, 44.96], [-119.0, 44.75], [-119.25, 44.85], [-119.5, 44.75], [-119.75, 44.85], [-119.82, 44.82], [-119.97, 44.47], [-120.5, 44.25], [-121.03, 44.47], [-121.25, 45.0], [-121.15, 45.25], [-121.25, 45.5], [-121.03, 46.03]], [[-118.18, 47.18], [-118.15, 47.25], [-118.2, 47.38], [-118.32, 47.32], [-118.35, 47.25], [-118.32, 47.18], [-118.25, 47.15], [-118.18, 47.18]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 8.28720996586452}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.279151567013583}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [6.799544199481431, 8.116782427804537, 8.187816905319835]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.272879902546265, 11.912738785624299, 10.96670149719921]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.41015507325636, 6.691976790068449, 6.735322837715939]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.964454600505974, 8.28720996586452, 7.626930155700393]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.1710713819971503, 1.427001797347677, 1.4428121971939436]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.43827895226131, 1.7077659886730507, 1.6226387976582717]}}