{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:50:47.156291", "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-Jan-20_to_2023-Jan-23_40.0_14.5"}, "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": 2023010002600}, "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 20 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 23 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 53431.27658391936}, "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": ["Eritrea"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "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": ["Red Sea"]}, "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": 14.5}, "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": 40.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "40.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 39.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 41.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 14.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 18.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[38.47, 16.47], [38.25, 17.0], [38.35, 17.25], [38.25, 17.5], [38.35, 17.75], [38.25, 18.0], [38.47, 18.53], [39.0, 18.75], [39.53, 18.53], [39.68, 18.18], [40.03, 18.03], [40.18, 17.68], [40.53, 17.53], [40.75, 17.0], [40.65, 16.75], [40.68, 16.68], [41.03, 16.53], [41.25, 16.0], [41.15, 15.75], [41.18, 15.68], [41.53, 15.53], [41.75, 15.0], [41.53, 14.47], [41.0, 14.25], [40.75, 14.35], [40.68, 14.32], [40.53, 13.97], [40.0, 13.75], [39.47, 13.97], [39.25, 14.5], [39.35, 14.75], [39.32, 14.82], [38.97, 14.97], [38.75, 15.5], [38.85, 15.75], [38.75, 16.0], [38.85, 16.25], [38.82, 16.32], [38.47, 16.47]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara", "N.Eastern-Africa", "Arabian-Peninsula"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-01-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.25, 17.5], [38.35, 17.75], [38.25, 18.0], [38.47, 18.53], [39.0, 18.75], [39.53, 18.53], [39.68, 18.18], [40.03, 18.03], [40.18, 17.68], [40.53, 17.53], [40.75, 17.0], [40.65, 16.75], [40.68, 16.68], [41.03, 16.53], [41.25, 16.0], [41.15, 15.75], [41.18, 15.68], [41.53, 15.53], [41.75, 15.0], [41.53, 14.47], [41.0, 14.25], [40.75, 14.35], [40.68, 14.32], [40.53, 13.97], [40.0, 13.75], [39.47, 13.97], [39.25, 14.5], [39.35, 14.75], [39.25, 15.0], [39.35, 15.25], [39.25, 15.5], [39.35, 15.75], [39.32, 15.82], [38.97, 15.97], [38.82, 16.32], [38.47, 16.47], [38.25, 17.0], [38.35, 17.25], [38.25, 17.5]]]]}, "2023-01-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.25, 17.5], [38.35, 17.75], [38.25, 18.0], [38.47, 18.53], [39.0, 18.75], [39.53, 18.53], [39.68, 18.18], [40.03, 18.03], [40.18, 17.68], [40.53, 17.53], [40.75, 17.0], [40.65, 16.75], [40.68, 16.68], [41.03, 16.53], [41.25, 16.0], [41.15, 15.75], [41.18, 15.68], [41.53, 15.53], [41.75, 15.0], [41.53, 14.47], [41.0, 14.25], [40.75, 14.35], [40.68, 14.32], [40.53, 13.97], [40.0, 13.75], [39.47, 13.97], [39.25, 14.5], [39.35, 14.75], [39.32, 14.82], [38.97, 14.97], [38.75, 15.5], [38.85, 15.75], [38.75, 16.0], [38.85, 16.25], [38.82, 16.32], [38.47, 16.47], [38.25, 17.0], [38.35, 17.25], [38.25, 17.5]]]]}, "2023-01-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.25, 17.5], [38.35, 17.75], [38.25, 18.0], [38.47, 18.53], [39.0, 18.75], [39.53, 18.53], [39.68, 18.18], [40.03, 18.03], [40.18, 17.68], [40.53, 17.53], [40.75, 17.0], [40.65, 16.75], [40.68, 16.68], [41.03, 16.53], [41.25, 16.0], [41.15, 15.75], [41.18, 15.68], [41.53, 15.53], [41.75, 15.0], [41.53, 14.47], [41.0, 14.25], [40.75, 14.35], [40.68, 14.32], [40.53, 13.97], [40.0, 13.75], [39.47, 13.97], [39.25, 14.5], [39.35, 14.75], [39.32, 14.82], [38.97, 14.97], [38.75, 15.5], [38.85, 15.75], [38.75, 16.0], [38.85, 16.25], [38.82, 16.32], [38.47, 16.47], [38.25, 17.0], [38.35, 17.25], [38.25, 17.5]]]]}, "2023-01-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.75, 16.0], [38.85, 16.25], [38.75, 16.5], [38.85, 16.75], [38.75, 17.0], [38.88, 17.3], [38.47, 17.47], [38.25, 18.0], [38.47, 18.53], [39.0, 18.75], [39.53, 18.53], [39.75, 18.0], [39.63, 17.7], [40.03, 17.53], [40.25, 17.0], [40.15, 16.75], [40.25, 16.5], [40.15, 16.25], [40.18, 16.18], [40.53, 16.03], [40.75, 15.5], [40.65, 15.25], [40.75, 15.0], [40.65, 14.75], [40.75, 14.5], [40.53, 13.97], [40.0, 13.75], [39.47, 13.97], [39.25, 14.5], [39.35, 14.75], [39.32, 14.82], [38.97, 14.97], [38.75, 15.5], [38.85, 15.75], [38.75, 16.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.376981645866977}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.6516710388292921}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.918581306468525, 26.891550421217914, 26.567509120644786, 26.368296990044314]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.693091836202996, 28.276852229221163, 27.753049927322877, 27.36691637857092]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.7063736132339251, 1.8087527195792523, 1.4949393559335564, 1.5414783948480206]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.376981645866977, 3.813259093737827, 3.4299780095680603, 3.006536302782081]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.892028893235814, 1.973628074875781, 1.5745095223950127, 1.2490616660249847]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.5164234274597908, 2.552397339160599, 1.8963117753168328, 1.381378860548262]}}