{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:57:42.695519", "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": "2024-Feb-27_to_2024-Feb-29_52.0_-7.5"}, "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": 2024020001925}, "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 27 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 29 2024"}, "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": 82804.0387005898}, "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": ["Seychelles"]}, "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": ["Indian Ocean"]}, "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": -7.5}, "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": 52.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "52.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 48.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 52.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -8.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -6.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[47.25, -7.0], [47.47, -6.47], [48.0, -6.25], [48.25, -6.35], [48.32, -6.32], [48.47, -5.97], [49.0, -5.75], [49.25, -5.85], [49.5, -5.75], [49.75, -5.85], [50.0, -5.75], [50.25, -5.85], [50.5, -5.75], [50.75, -5.85], [51.0, -5.75], [51.25, -5.85], [51.5, -5.75], [52.03, -5.97], [52.18, -6.32], [52.25, -6.35], [52.5, -6.25], [53.03, -6.47], [53.25, -7.0], [53.15, -7.25], [53.25, -7.5], [53.15, -7.75], [53.25, -8.0], [53.03, -8.53], [52.5, -8.75], [52.25, -8.65], [52.0, -8.75], [51.75, -8.65], [51.5, -8.75], [51.25, -8.65], [51.0, -8.75], [50.47, -8.53], [50.32, -8.18], [50.25, -8.15], [50.0, -8.25], [49.75, -8.15], [49.5, -8.25], [48.97, -8.03], [48.82, -7.68], [48.75, -7.65], [48.5, -7.75], [48.25, -7.65], [48.0, -7.75], [47.47, -7.53], [47.25, -7.0]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Equatorial.Indian-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-02-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.0, -7.75], [47.47, -7.53], [47.25, -7.0], [47.47, -6.47], [48.0, -6.25], [48.25, -6.35], [48.32, -6.32], [48.47, -5.97], [49.0, -5.75], [49.25, -5.85], [49.5, -5.75], [49.75, -5.85], [50.0, -5.75], [50.25, -5.85], [50.5, -5.75], [50.75, -5.85], [51.0, -5.75], [51.25, -5.85], [51.5, -5.75], [52.03, -5.97], [52.18, -6.32], [52.25, -6.35], [52.5, -6.25], [53.03, -6.47], [53.25, -7.0], [53.15, -7.25], [53.25, -7.5], [53.15, -7.75], [53.25, -8.0], [53.03, -8.53], [52.5, -8.75], [52.25, -8.65], [52.0, -8.75], [51.75, -8.65], [51.5, -8.75], [51.25, -8.65], [51.0, -8.75], [50.47, -8.53], [50.32, -8.18], [50.25, -8.15], [50.0, -8.25], [49.75, -8.15], [49.5, -8.25], [48.97, -8.03], [48.82, -7.68], [48.75, -7.65], [48.5, -7.75], [48.25, -7.65], [48.0, -7.75]]]]}, "2024-02-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.0, -7.75], [47.47, -7.53], [47.25, -7.0], [47.47, -6.47], [48.0, -6.25], [48.25, -6.35], [48.32, -6.32], [48.47, -5.97], [49.0, -5.75], [49.25, -5.85], [49.5, -5.75], [49.75, -5.85], [50.0, -5.75], [50.25, -5.85], [50.5, -5.75], [50.75, -5.85], [51.0, -5.75], [51.25, -5.85], [51.5, -5.75], [52.03, -5.97], [52.18, -6.32], [52.25, -6.35], [52.5, -6.25], [53.03, -6.47], [53.25, -7.0], [53.15, -7.25], [53.25, -7.5], [53.15, -7.75], [53.25, -8.0], [53.03, -8.53], [52.5, -8.75], [52.25, -8.65], [52.0, -8.75], [51.75, -8.65], [51.5, -8.75], [51.25, -8.65], [51.0, -8.75], [50.47, -8.53], [50.32, -8.18], [50.25, -8.15], [50.0, -8.25], [49.75, -8.15], [49.5, -8.25], [48.97, -8.03], [48.82, -7.68], [48.75, -7.65], [48.5, -7.75], [48.25, -7.65], [48.0, -7.75]]]]}, "2024-02-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.0, -7.75], [47.47, -7.53], [47.25, -7.0], [47.47, -6.47], [48.0, -6.25], [48.25, -6.35], [48.32, -6.32], [48.47, -5.97], [49.0, -5.75], [49.25, -5.85], [49.5, -5.75], [49.75, -5.85], [50.0, -5.75], [50.25, -5.85], [50.5, -5.75], [50.75, -5.85], [51.0, -5.75], [51.25, -5.85], [51.5, -5.75], [52.03, -5.97], [52.18, -6.32], [52.25, -6.35], [52.5, -6.25], [53.03, -6.47], [53.25, -7.0], [53.15, -7.25], [53.25, -7.5], [53.15, -7.75], [53.25, -8.0], [53.03, -8.53], [52.5, -8.75], [52.25, -8.65], [52.0, -8.75], [51.75, -8.65], [51.5, -8.75], [51.25, -8.65], [51.0, -8.75], [50.47, -8.53], [50.32, -8.18], [50.25, -8.15], [50.0, -8.25], [49.75, -8.15], [49.5, -8.25], [48.97, -8.03], [48.82, -7.68], [48.75, -7.65], [48.5, -7.75], [48.25, -7.65], [48.0, -7.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.063682978220868}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.5104279339561855}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.878893473573896, 28.584033673221427, 28.835567876184086]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [29.15548103891382, 28.830523505445797, 29.09571068923009]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.6522639875099812, 1.3312853316272835, 1.547734482731292]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.063682978220868, 1.575986567618429, 1.919204104836922]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.994921588549793, 1.6025414649306686, 1.8736535277515758]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.5212360901307393, 1.9165620816668054, 2.3874949103007364]}}