{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:56:27.829982", "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-Nov-30_to_2023-Dec-04_52.0_-5.5"}, "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": 2023110002327}, "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": "November 30 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 04 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 113511.51832090912}, "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": ["Amirante Basin", "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": -5.5}, "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": 50.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 53.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -9.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -5.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[49.97, -7.47], [50.38, -7.3], [50.25, -7.0], [50.35, -6.75], [50.32, -6.68], [49.97, -6.53], [49.75, -6.0], [49.97, -5.47], [50.32, -5.32], [50.47, -4.97], [51.0, -4.75], [51.25, -4.85], [51.5, -4.75], [51.75, -4.85], [52.0, -4.75], [52.25, -4.85], [52.5, -4.75], [52.75, -4.85], [53.0, -4.75], [53.25, -4.85], [53.5, -4.75], [54.03, -4.97], [54.25, -5.5], [54.15, -5.75], [54.25, -6.0], [54.15, -6.25], [54.25, -6.5], [54.15, -6.75], [54.25, -7.0], [54.03, -7.53], [53.5, -7.75], [53.2, -7.62], [53.03, -8.03], [52.68, -8.18], [52.53, -8.53], [52.18, -8.68], [52.03, -9.03], [51.68, -9.18], [51.65, -9.25], [51.75, -9.5], [51.53, -10.03], [51.0, -10.25], [50.47, -10.03], [50.32, -9.68], [49.97, -9.53], [49.75, -9.0], [49.85, -8.75], [49.75, -8.5], [49.85, -8.25], [49.75, -8.0], [49.97, -7.47]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Madagascar", "Equatorial.Indian-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-11-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.47, -4.97], [52.0, -4.75], [52.53, -4.97], [52.75, -5.5], [52.53, -6.03], [52.0, -6.25], [51.47, -6.03], [51.25, -5.5], [51.47, -4.97]]]]}, "2023-12-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.47, -4.97], [52.0, -4.75], [52.53, -4.97], [52.75, -5.5], [52.53, -6.03], [52.0, -6.25], [51.47, -6.03], [51.25, -5.5], [51.47, -4.97]]]]}, "2023-12-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[49.75, -8.5], [49.85, -8.25], [49.75, -8.0], [49.97, -7.47], [50.38, -7.3], [50.25, -7.0], [50.35, -6.75], [50.32, -6.68], [49.97, -6.53], [49.75, -6.0], [49.97, -5.47], [50.32, -5.32], [50.47, -4.97], [51.0, -4.75], [51.25, -4.85], [51.5, -4.75], [51.75, -4.85], [52.0, -4.75], [52.25, -4.85], [52.5, -4.75], [52.75, -4.85], [53.0, -4.75], [53.25, -4.85], [53.5, -4.75], [54.03, -4.97], [54.25, -5.5], [54.15, -5.75], [54.25, -6.0], [54.15, -6.25], [54.25, -6.5], [54.15, -6.75], [54.25, -7.0], [54.03, -7.53], [53.5, 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-9.0], [49.85, -8.75], [49.75, -8.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 1.5633660639219897}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.0904291750812671}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.477091017849204, 27.44042265401623, 27.64553544194564, 27.837875755942605, 27.611579077147553]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.477091017849204, 27.44042265401623, 27.944774376781538, 28.19747277413893, 28.072621511921056]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.8024337101953734, 0.7809747720103815, 1.0271710157313123, 1.240579990284146, 1.0196838129569046]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [0.8024337101953734, 0.7809747720103815, 1.3498700806683814, 1.5633660639219897, 1.5267130603518808]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4048469563114618, 1.406976630295369, 1.9971754253524343, 2.4955210897907625, 1.9931417505508857]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4048469563114618, 1.406976630295369, 2.6323826634312537, 3.1196254880506524, 2.974336246799359]}}