{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:51:22.418877", "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-Feb-19_to_2023-Feb-22_40.5_15.5"}, "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": 2023020002207}, "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 19 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 22 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": 62222.48699815053}, "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": 15.5}, "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": 40.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "40.5\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": 41.5}, "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": [[[[40.0, 14.75], [39.47, 14.97], [39.32, 15.32], [38.97, 15.47], [38.75, 16.0], [38.85, 16.25], [38.75, 16.5], [38.85, 16.75], [38.75, 17.0], [38.85, 17.25], [38.82, 17.32], [38.47, 17.47], [38.25, 18.0], [38.47, 18.53], [39.0, 18.75], [39.25, 18.65], [39.5, 18.75], [39.75, 18.65], [40.0, 18.75], [40.53, 18.53], [40.68, 18.18], [41.03, 18.03], [41.25, 17.5], [41.15, 17.25], [41.25, 17.0], [41.15, 16.75], [41.18, 16.68], [41.53, 16.53], [41.75, 16.0], [41.65, 15.75], [41.75, 15.5], [41.65, 15.25], [41.68, 15.18], [42.03, 15.03], [42.25, 14.5], [42.03, 13.97], [41.5, 13.75], [40.97, 13.97], [40.82, 14.32], [40.47, 14.47], [40.32, 14.82], [40.25, 14.85], [40.0, 14.75]]]]}}, "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": {"2023-02-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.47, 17.47], [38.25, 18.0], [38.47, 18.53], [39.0, 18.75], [39.25, 18.65], [39.5, 18.75], [39.75, 18.65], [40.0, 18.75], [40.53, 18.53], [40.68, 18.18], [41.03, 18.03], [41.25, 17.5], [41.15, 17.25], [41.25, 17.0], [41.15, 16.75], [41.18, 16.68], [41.53, 16.53], [41.75, 16.0], [41.65, 15.75], [41.75, 15.5], [41.65, 15.25], [41.68, 15.18], [42.03, 15.03], [42.25, 14.5], [42.03, 13.97], [41.5, 13.75], [40.97, 13.97], [40.82, 14.32], [40.47, 14.47], [40.32, 14.82], [40.25, 14.85], [40.0, 14.75], [39.47, 14.97], [39.32, 15.32], [38.97, 15.47], [38.75, 16.0], [38.85, 16.25], [38.75, 16.5], [38.85, 16.75], [38.75, 17.0], [38.85, 17.25], [38.82, 17.32], [38.47, 17.47]]]]}, "2023-02-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.47, 17.47], [38.25, 18.0], [38.47, 18.53], [39.0, 18.75], [39.25, 18.65], [39.5, 18.75], [39.75, 18.65], [40.0, 18.75], [40.53, 18.53], [40.68, 18.18], [41.03, 18.03], [41.25, 17.5], [41.15, 17.25], [41.25, 17.0], [41.15, 16.75], [41.18, 16.68], [41.53, 16.53], [41.75, 16.0], [41.65, 15.75], [41.75, 15.5], [41.65, 15.25], [41.68, 15.18], [42.03, 15.03], [42.25, 14.5], [42.03, 13.97], [41.5, 13.75], [40.97, 13.97], [40.82, 14.32], [40.47, 14.47], [40.32, 14.82], [40.25, 14.85], [40.0, 14.75], [39.47, 14.97], [39.32, 15.32], [38.97, 15.47], [38.75, 16.0], [38.85, 16.25], [38.75, 16.5], [38.85, 16.75], [38.75, 17.0], [38.85, 17.25], [38.82, 17.32], [38.47, 17.47]]]]}, "2023-02-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.47, 17.47], [38.25, 18.0], [38.47, 18.53], [39.0, 18.75], [39.25, 18.65], [39.5, 18.75], [39.75, 18.65], [40.0, 18.75], [40.53, 18.53], [40.68, 18.18], [41.03, 18.03], [41.25, 17.5], [41.15, 17.25], [41.25, 17.0], [41.15, 16.75], [41.18, 16.68], [41.53, 16.53], [41.75, 16.0], [41.65, 15.75], [41.75, 15.5], [41.65, 15.25], [41.68, 15.18], [42.03, 15.03], [42.25, 14.5], [42.03, 13.97], [41.5, 13.75], [40.97, 13.97], [40.82, 14.32], [40.47, 14.47], [40.32, 14.82], [40.25, 14.85], [40.0, 14.75], [39.47, 14.97], [39.32, 15.32], [38.97, 15.47], [38.75, 16.0], [38.85, 16.25], [38.75, 16.5], [38.85, 16.75], [38.75, 17.0], [38.85, 17.25], [38.82, 17.32], [38.47, 17.47]]]]}, "2023-02-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.5, 14.75], [39.97, 14.97], [39.75, 15.5], [39.97, 16.03], [40.5, 16.25], [41.03, 16.03], [41.25, 15.5], [41.03, 14.97], [40.5, 14.75]]], [[[39.0, 17.25], [38.47, 17.47], [38.25, 18.0], [38.47, 18.53], [39.0, 18.75], [39.53, 18.53], [39.75, 18.0], [39.53, 17.47], [39.0, 17.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.162132747844282}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.5026063152327302}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.87533459614525, 27.11025612285391, 27.127423562649597, 26.8503103603324]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.897503599607035, 27.909010852148924, 28.107494329520307, 27.382071808001626]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.4103505792570505, 1.5846403822148432, 1.5397218257749343, 1.220220978972037]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.162132747844282, 1.9240710133512948, 1.939601940913235, 1.32252008605235]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.760894587991704, 1.9404381832869497, 1.8147723465410441, 1.3386518188209415]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.835415298173661, 2.2190131879696438, 2.263005900514294, 1.4986559648167719]}}