{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:55:26.103347", "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-Sep-24_to_2023-Sep-26_88.5_-61.0"}, "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": 2023090001847}, "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": "September 24 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 26 2023"}, "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": 57765.05246208246}, "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": ["Antarctica"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Antarctica"]}, "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": ["Gribb Bank", "Indian Ocean", "Southern 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": -61.0}, "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": 88.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "88.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 85.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 91.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -61.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -59.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[85.32, -59.32], [85.47, -58.97], [85.82, -58.82], [85.97, -58.47], [86.5, -58.25], [86.75, -58.35], [87.0, -58.25], [87.25, -58.35], [87.5, -58.25], [88.03, -58.47], [88.25, -59.0], [88.15, -59.25], [88.25, -59.5], [88.15, -59.75], [88.18, -59.82], [88.25, -59.85], [88.5, -59.75], [88.75, -59.85], [89.0, -59.75], [89.53, -59.97], [89.68, -60.32], [89.75, -60.35], [90.0, -60.25], [90.25, -60.35], [90.5, -60.25], [90.75, -60.35], [91.0, -60.25], [91.53, -60.47], [91.75, -61.0], [91.53, -61.53], [91.0, -61.75], [90.75, -61.65], [90.68, -61.68], [90.53, -62.03], [90.0, -62.25], [89.75, -62.15], [89.5, -62.25], [89.25, -62.15], [89.0, -62.25], [88.75, -62.15], [88.5, -62.25], [88.25, -62.15], [88.0, -62.25], [87.75, -62.15], [87.5, -62.25], [87.25, -62.15], [87.0, -62.25], [86.47, -62.03], [86.32, -61.68], [86.25, -61.65], [86.0, -61.75], [85.47, -61.53], [85.32, -61.18], [84.97, -61.03], [84.75, -60.5], [84.85, -60.25], [84.75, -60.0], [84.97, -59.47], [85.32, -59.32]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Southern-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-09-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[84.75, -60.0], [84.97, -59.47], [85.32, -59.32], [85.47, -58.97], [85.82, -58.82], [85.97, -58.47], [86.5, -58.25], [86.75, -58.35], [87.0, -58.25], [87.25, -58.35], [87.5, -58.25], [88.03, -58.47], [88.25, -59.0], [88.15, -59.25], [88.25, -59.5], [88.15, -59.75], [88.18, -59.82], [88.25, -59.85], [88.5, -59.75], [88.75, -59.85], [89.0, -59.75], [89.53, -59.97], [89.68, -60.32], [89.75, -60.35], [90.0, -60.25], [90.25, -60.35], [90.5, -60.25], [90.75, -60.35], [91.0, -60.25], [91.53, -60.47], [91.75, -61.0], [91.53, -61.53], [91.0, -61.75], [90.75, -61.65], [90.68, -61.68], [90.53, -62.03], [90.0, -62.25], [89.75, -62.15], [89.5, -62.25], [89.25, -62.15], [89.0, -62.25], [88.75, -62.15], [88.5, -62.25], [88.25, -62.15], [88.0, -62.25], [87.75, -62.15], [87.5, -62.25], [87.25, -62.15], [87.0, -62.25], [86.47, -62.03], [86.32, -61.68], [86.25, -61.65], [86.0, -61.75], [85.47, -61.53], [85.32, -61.18], [84.97, -61.03], [84.75, -60.5], [84.85, -60.25], [84.75, -60.0]]]]}, "2023-09-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[84.75, -60.0], [84.97, -59.47], [85.32, -59.32], [85.47, -58.97], [85.82, -58.82], [85.97, -58.47], [86.5, -58.25], [86.75, -58.35], [87.0, -58.25], [87.25, -58.35], [87.5, -58.25], [88.03, -58.47], [88.25, -59.0], [88.15, -59.25], [88.25, -59.5], [88.15, -59.75], [88.18, -59.82], [88.25, -59.85], [88.5, -59.75], [88.75, -59.85], [89.0, -59.75], [89.53, -59.97], [89.68, -60.32], [89.75, -60.35], [90.0, -60.25], [90.25, -60.35], [90.5, -60.25], [90.75, -60.35], [91.0, -60.25], [91.53, -60.47], [91.75, -61.0], [91.53, -61.53], [91.0, -61.75], [90.75, -61.65], [90.68, -61.68], [90.53, -62.03], [90.0, -62.25], [89.75, -62.15], [89.5, -62.25], [89.25, -62.15], [89.0, -62.25], [88.75, -62.15], [88.5, -62.25], [88.25, -62.15], [88.0, -62.25], [87.75, -62.15], [87.5, -62.25], [87.25, -62.15], [87.0, -62.25], [86.47, -62.03], [86.32, -61.68], [86.25, -61.65], [86.0, -61.75], [85.47, -61.53], [85.32, -61.18], [84.97, -61.03], [84.75, -60.5], [84.85, -60.25], [84.75, -60.0]]]]}, "2023-09-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[84.75, -60.0], [84.97, -59.47], [85.32, -59.32], [85.47, -58.97], [85.82, -58.82], [85.97, -58.47], [86.5, -58.25], [86.75, -58.35], [87.0, -58.25], [87.25, -58.35], [87.5, -58.25], [88.03, -58.47], [88.25, -59.0], [88.15, -59.25], [88.25, -59.5], [88.15, -59.75], [88.18, -59.82], [88.25, -59.85], [88.5, -59.75], [88.75, -59.85], [89.0, -59.75], [89.53, -59.97], [89.68, -60.32], [89.75, -60.35], [90.0, -60.25], [90.25, -60.35], [90.5, -60.25], [90.75, -60.35], [91.0, -60.25], [91.53, -60.47], [91.75, -61.0], [91.53, -61.53], [91.0, -61.75], [90.75, -61.65], [90.68, -61.68], [90.53, -62.03], [90.0, -62.25], [89.75, -62.15], [89.5, -62.25], [89.25, -62.15], [89.0, -62.25], [88.75, -62.15], [88.5, -62.25], [88.25, -62.15], [88.0, -62.25], [87.75, -62.15], [87.5, -62.25], [87.25, -62.15], [87.0, -62.25], [86.47, -62.03], [86.32, -61.68], [86.25, -61.65], [86.0, -61.75], [85.47, -61.53], [85.32, -61.18], [84.97, -61.03], [84.75, -60.5], [84.85, -60.25], [84.75, -60.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.448303212094004}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.974405260419302}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-1.8130020606415087, -0.9516449801053568, -1.2149998834043458]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-0.5793511846632668, -0.1364155871297612, -0.41229555599960577]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.596895248315335, 5.40637434998624, 4.919946182956332]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.392624380491156, 6.448303212094004, 5.830136470949981]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2574124445643782, 1.4565365108879393, 1.3346774454004842]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.342164685413281, 1.5539957499444208, 1.4296479501891006]}}