{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:08.305999", "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": "2019-Feb-03_to_2019-Feb-05_253.0_37.0"}, "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": 2019020001234}, "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": "February 03 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 05 2019"}, "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": 66448.87716960227}, "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": 37.0}, "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": 253.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "253.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 249.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 253.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 35.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 39.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-02-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.5, 38.25], [-109.25, 38.15], [-109.18, 38.18], [-109.03, 38.53], [-108.68, 38.68], [-108.65, 38.75], [-108.75, 39.0], [-108.53, 39.53], [-108.18, 39.68], [-108.03, 40.03], [-107.5, 40.25], [-106.97, 40.03], [-106.75, 39.5], [-106.87, 39.2], [-106.47, 39.03], [-106.25, 38.5], [-106.35, 38.25], [-106.25, 38.0], [-106.46, 37.5], [-106.32, 37.18], [-105.97, 37.03], [-105.75, 36.5], [-105.85, 36.25], [-105.75, 36.0], [-105.97, 35.47], [-106.5, 35.25], [-106.75, 35.35], [-107.0, 35.25], [-107.25, 35.35], [-107.5, 35.25], [-108.0, 35.46], [-108.5, 35.25], [-109.03, 35.47], [-109.18, 35.82], [-109.53, 35.97], [-109.68, 36.32], [-109.75, 36.35], [-110.0, 36.25], [-110.53, 36.47], [-110.75, 37.0], [-110.53, 37.53], [-110.18, 37.68], [-110.03, 38.03], [-109.5, 38.25]]]]}, "2019-02-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.5, 38.25], [-109.25, 38.15], [-109.18, 38.18], [-109.03, 38.53], [-108.68, 38.68], [-108.65, 38.75], [-108.75, 39.0], [-108.53, 39.53], [-108.18, 39.68], [-108.03, 40.03], [-107.5, 40.25], [-106.97, 40.03], [-106.75, 39.5], [-106.87, 39.2], [-106.47, 39.03], [-106.25, 38.5], [-106.35, 38.25], [-106.25, 38.0], [-106.46, 37.5], [-106.32, 37.18], [-105.97, 37.03], [-105.75, 36.5], [-105.85, 36.25], [-105.75, 36.0], [-105.97, 35.47], [-106.5, 35.25], [-106.75, 35.35], [-107.0, 35.25], [-107.25, 35.35], [-107.5, 35.25], [-108.0, 35.46], [-108.5, 35.25], [-109.03, 35.47], [-109.18, 35.82], [-109.53, 35.97], [-109.68, 36.32], [-109.75, 36.35], [-110.0, 36.25], [-110.53, 36.47], [-110.75, 37.0], [-110.53, 37.53], [-110.18, 37.68], [-110.03, 38.03], [-109.5, 38.25]]]]}, "2019-02-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.5, 38.25], [-109.25, 38.15], [-109.18, 38.18], [-109.03, 38.53], [-108.68, 38.68], [-108.65, 38.75], [-108.75, 39.0], [-108.53, 39.53], [-108.18, 39.68], [-108.03, 40.03], [-107.5, 40.25], [-106.97, 40.03], [-106.75, 39.5], [-106.87, 39.2], [-106.47, 39.03], [-106.25, 38.5], [-106.35, 38.25], [-106.25, 38.0], [-106.46, 37.5], [-106.32, 37.18], [-105.97, 37.03], [-105.75, 36.5], [-105.85, 36.25], [-105.75, 36.0], [-105.97, 35.47], [-106.5, 35.25], [-106.75, 35.35], [-107.0, 35.25], [-107.25, 35.35], [-107.5, 35.25], [-108.0, 35.46], [-108.5, 35.25], [-109.03, 35.47], [-109.18, 35.82], [-109.53, 35.97], [-109.68, 36.32], [-109.75, 36.35], [-110.0, 36.25], [-110.53, 36.47], [-110.75, 37.0], [-110.53, 37.53], [-110.18, 37.68], [-110.03, 38.03], [-109.5, 38.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 10.002239318479553}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.77302846025742}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [4.77313810757073, 3.7110557705029237, 3.364609694912133]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.55548646414718, 8.550803915967663, 8.749868828184901]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.785821254528657, 6.604300618855352, 5.928963507388251]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [10.002239318479553, 8.228265166447272, 7.417781036458905]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.8306508931431251, 1.5630887828768008, 1.4276912935156634]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.4504231244878016, 2.0653245987968325, 1.7545647827137845]}}