{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:07:07.984321", "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": "2025-Aug-07_to_2025-Aug-10_91.5_-65.5"}, "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": 2025080001501}, "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": "August 07 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 10 2025"}, "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": 123839.30362784085}, "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": ["Davis 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": -65.5}, "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": 91.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "91.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 84.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 100.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -68.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -65.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[83.47, -66.47], [84.0, -66.25], [84.25, -66.35], [84.5, -66.25], [84.75, -66.35], [85.0, -66.25], [85.25, -66.35], [85.32, -66.32], [85.35, -66.25], [85.25, -66.0], [85.47, -65.47], [86.0, -65.25], [86.25, -65.35], [86.5, -65.25], [86.75, -65.35], [87.0, -65.25], [87.25, -65.35], [87.5, -65.25], [87.75, -65.35], [88.0, -65.25], [88.25, -65.35], [88.5, -65.25], [88.75, -65.35], [88.82, -65.32], [88.97, -64.97], [89.5, -64.75], [89.75, -64.85], [90.0, -64.75], [90.25, -64.85], [90.5, -64.75], [90.75, -64.85], [91.0, -64.75], [91.25, -64.85], [91.5, -64.75], [91.75, -64.85], [92.0, -64.75], [92.53, -64.97], [92.75, -65.5], [92.65, -65.75], [92.75, -66.0], [92.63, -66.3], [92.75, -66.35], [93.0, -66.25], [93.25, -66.35], [93.32, -66.32], [93.47, -65.97], [93.82, -65.82], [93.97, -65.47], [94.5, -65.25], [94.75, -65.35], [95.0, -65.25], [95.25, -65.35], [95.5, -65.25], [95.75, -65.35], [96.0, -65.25], [96.25, -65.35], [96.5, -65.25], [96.75, -65.35], [97.0, -65.25], [97.25, -65.35], [97.5, -65.25], [97.75, -65.35], [98.0, -65.25], [98.25, -65.35], [98.5, -65.25], [98.75, -65.35], [99.0, -65.25], [99.25, -65.35], [99.5, -65.25], [99.75, -65.35], [100.0, -65.25], [100.25, -65.35], [100.5, -65.25], [101.03, -65.47], [101.25, -66.0], [101.15, -66.25], [101.25, -66.5], [101.03, -67.03], [100.5, -67.25], [100.25, -67.15], [100.18, -67.18], [100.03, -67.53], [99.68, -67.68], [99.53, -68.03], [99.18, -68.18], [99.03, -68.53], [98.5, -68.75], [97.97, -68.53], [97.8, -68.12], [97.5, -68.25], [97.25, -68.15], [97.0, -68.25], [96.47, -68.03], [96.32, -67.68], [96.25, -67.65], [96.0, -67.75], [95.75, -67.65], [95.68, -67.68], [95.53, -68.03], [95.0, -68.25], [94.75, -68.15], [94.5, -68.25], [94.25, -68.15], [94.0, -68.25], [93.75, -68.15], [93.5, -68.25], [93.25, -68.15], [93.0, -68.25], [92.75, -68.15], [92.5, -68.25], [92.25, -68.15], [92.0, -68.25], [91.75, -68.15], [91.5, -68.25], [91.25, -68.15], [91.0, -68.25], [90.47, -68.03], [90.32, -67.68], [90.25, -67.65], [90.0, -67.75], [89.75, -67.65], [89.5, -67.75], [89.25, -67.65], [89.0, -67.75], [88.75, -67.65], [88.5, -67.75], [88.25, -67.65], [88.0, -67.75], [87.75, -67.65], [87.5, -67.75], [87.25, -67.65], [87.0, -67.75], [86.75, -67.65], [86.5, -67.75], [86.25, -67.65], [86.0, -67.75], [85.75, -67.65], [85.5, -67.75], [85.25, -67.65], [85.0, -67.75], [84.75, -67.65], [84.5, -67.75], [84.25, -67.65], [84.0, -67.75], [83.47, -67.53], [83.25, -67.0], [83.47, -66.47]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Antarctica"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-08-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[84.0, -67.75], [83.47, -67.53], [83.25, -67.0], [83.47, -66.47], [84.0, -66.25], [84.25, -66.35], [84.5, -66.25], [84.75, -66.35], [85.0, -66.25], [85.25, -66.35], [85.32, -66.32], [85.35, -66.25], [85.25, -66.0], [85.47, -65.47], [86.0, -65.25], [86.25, -65.35], [86.5, -65.25], [86.75, -65.35], [87.0, -65.25], [87.25, -65.35], [87.5, -65.25], [87.75, -65.35], [88.0, -65.25], [88.25, -65.35], [88.5, -65.25], [88.75, -65.35], [88.82, -65.32], [88.97, -64.97], [89.5, -64.75], [89.75, -64.85], [90.0, -64.75], [90.25, -64.85], [90.5, -64.75], [90.75, -64.85], [91.0, -64.75], [91.25, -64.85], [91.5, -64.75], [91.75, -64.85], [92.0, -64.75], [92.53, -64.97], [92.75, -65.5], [92.65, -65.75], [92.75, -66.0], [92.63, -66.3], [92.75, -66.35], [93.0, -66.25], [93.25, -66.35], [93.32, -66.32], [93.47, -65.97], [93.82, -65.82], [93.97, -65.47], [94.5, -65.25], [94.75, -65.35], [95.0, -65.25], [95.25, -65.35], [95.5, -65.25], [95.75, -65.35], [96.0, -65.25], [96.25, -65.35], [96.5, -65.25], [96.75, -65.35], [97.0, -65.25], [97.25, -65.35], [97.5, -65.25], [97.75, -65.35], [98.0, -65.25], [98.25, -65.35], [98.5, -65.25], [98.75, -65.35], [99.0, -65.25], [99.25, -65.35], [99.5, -65.25], [99.75, -65.35], [100.0, -65.25], [100.25, -65.35], [100.5, -65.25], [101.03, -65.47], [101.25, -66.0], [101.15, -66.25], [101.25, -66.5], [101.03, -67.03], [100.5, -67.25], [100.25, -67.15], [100.18, -67.18], [100.03, -67.53], [99.68, -67.68], [99.53, -68.03], [99.18, -68.18], [99.03, -68.53], [98.5, -68.75], [97.97, -68.53], [97.8, -68.12], [97.5, -68.25], [97.25, -68.15], [97.0, -68.25], [96.47, -68.03], [96.32, -67.68], [96.25, -67.65], [96.0, -67.75], [95.75, -67.65], [95.68, -67.68], [95.53, -68.03], [95.0, -68.25], [94.75, -68.15], [94.5, -68.25], [94.25, -68.15], [94.0, -68.25], [93.75, -68.15], [93.5, -68.25], [93.25, -68.15], [93.0, -68.25], [92.75, -68.15], [92.5, -68.25], [92.25, -68.15], [92.0, -68.25], [91.75, -68.15], [91.5, -68.25], [91.25, -68.15], [91.0, -68.25], [90.47, -68.03], [90.32, -67.68], [90.25, -67.65], [90.0, -67.75], [89.75, -67.65], [89.5, -67.75], [89.25, -67.65], [89.0, -67.75], [88.75, -67.65], [88.5, -67.75], [88.25, -67.65], [88.0, -67.75], [87.75, -67.65], [87.5, -67.75], [87.25, -67.65], [87.0, -67.75], [86.75, -67.65], [86.5, -67.75], [86.25, -67.65], [86.0, -67.75], [85.75, -67.65], [85.5, -67.75], [85.25, -67.65], [85.0, -67.75], [84.75, -67.65], [84.5, -67.75], [84.25, -67.65], [84.0, -67.75]]]]}, "2025-08-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[84.0, -67.75], [83.47, -67.53], [83.25, -67.0], [83.47, -66.47], [84.0, -66.25], [84.25, -66.35], [84.5, -66.25], [84.75, -66.35], [85.0, -66.25], [85.25, -66.35], [85.32, -66.32], [85.35, -66.25], [85.25, -66.0], [85.47, -65.47], [86.0, -65.25], [86.25, -65.35], [86.5, -65.25], [86.75, -65.35], [87.0, -65.25], [87.25, -65.35], [87.5, -65.25], [87.75, -65.35], [88.0, -65.25], [88.25, -65.35], [88.5, -65.25], [88.75, -65.35], [88.82, -65.32], [88.97, -64.97], [89.5, -64.75], [89.75, -64.85], [90.0, -64.75], [90.25, -64.85], [90.5, -64.75], [90.75, -64.85], [91.0, -64.75], [91.25, -64.85], [91.5, -64.75], [91.75, -64.85], [92.0, -64.75], [92.53, -64.97], [92.75, -65.5], [92.65, -65.75], [92.75, -66.0], [92.63, -66.3], [92.75, -66.35], [93.0, -66.25], [93.25, -66.35], [93.32, -66.32], [93.47, -65.97], [93.82, -65.82], [93.97, -65.47], [94.5, -65.25], [94.75, -65.35], [95.0, -65.25], [95.25, -65.35], [95.5, -65.25], [95.75, -65.35], [96.0, -65.25], [96.25, -65.35], [96.5, -65.25], [96.75, -65.35], [97.0, -65.25], [97.25, -65.35], [97.5, -65.25], [97.75, -65.35], [98.0, -65.25], [98.25, -65.35], [98.5, -65.25], [98.75, -65.35], [99.0, -65.25], [99.25, -65.35], [99.5, -65.25], [99.75, -65.35], [100.0, -65.25], [100.25, -65.35], [100.5, -65.25], [101.03, -65.47], [101.25, -66.0], [101.15, -66.25], [101.25, -66.5], [101.03, -67.03], [100.5, -67.25], [100.25, -67.15], [100.18, -67.18], [100.03, -67.53], [99.68, -67.68], [99.53, -68.03], [99.18, -68.18], [99.03, -68.53], [98.5, -68.75], [97.97, -68.53], [97.8, -68.12], [97.5, -68.25], [97.25, -68.15], [97.0, -68.25], [96.47, -68.03], [96.32, -67.68], [96.25, -67.65], [96.0, -67.75], [95.75, -67.65], [95.68, -67.68], [95.53, -68.03], [95.0, -68.25], [94.75, -68.15], [94.5, -68.25], [94.25, -68.15], [94.0, -68.25], [93.75, -68.15], [93.5, -68.25], [93.25, -68.15], [93.0, -68.25], [92.75, -68.15], [92.5, -68.25], [92.25, -68.15], [92.0, -68.25], [91.75, -68.15], [91.5, -68.25], [91.25, -68.15], [91.0, -68.25], [90.47, -68.03], [90.32, -67.68], [90.25, -67.65], [90.0, -67.75], [89.75, -67.65], [89.5, -67.75], [89.25, -67.65], [89.0, -67.75], [88.75, -67.65], [88.5, -67.75], [88.25, -67.65], [88.0, -67.75], [87.75, -67.65], [87.5, -67.75], [87.25, -67.65], [87.0, -67.75], [86.75, -67.65], [86.5, -67.75], [86.25, -67.65], [86.0, -67.75], [85.75, -67.65], [85.5, -67.75], [85.25, -67.65], [85.0, -67.75], [84.75, -67.65], [84.5, -67.75], [84.25, -67.65], [84.0, -67.75]]]]}, "2025-08-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[84.0, -67.75], [83.47, -67.53], [83.25, -67.0], [83.47, -66.47], [84.0, -66.25], [84.25, -66.35], [84.5, -66.25], [84.75, -66.35], [85.0, -66.25], [85.25, -66.35], [85.32, -66.32], [85.35, -66.25], [85.25, -66.0], [85.47, -65.47], [86.0, -65.25], [86.25, -65.35], [86.5, -65.25], [86.75, -65.35], [87.0, -65.25], [87.25, -65.35], [87.5, -65.25], [87.75, -65.35], [88.0, -65.25], [88.25, -65.35], [88.5, -65.25], [88.75, -65.35], [88.82, -65.32], [88.97, -64.97], [89.5, -64.75], [89.75, -64.85], [90.0, -64.75], [90.25, -64.85], [90.5, -64.75], [90.75, -64.85], [91.0, -64.75], [91.25, -64.85], [91.5, -64.75], [91.75, -64.85], [92.0, -64.75], [92.53, -64.97], [92.75, -65.5], [92.65, -65.75], [92.75, -66.0], [92.63, -66.3], [92.75, -66.35], [93.0, -66.25], [93.25, -66.35], [93.32, -66.32], [93.47, -65.97], [93.82, -65.82], [93.97, -65.47], [94.5, -65.25], [94.75, -65.35], [95.0, -65.25], [95.25, -65.35], [95.5, -65.25], [95.75, -65.35], [96.0, -65.25], [96.25, -65.35], [96.5, -65.25], [96.75, -65.35], [97.0, -65.25], [97.25, -65.35], [97.5, -65.25], [97.75, -65.35], [98.0, -65.25], [98.25, -65.35], [98.5, -65.25], [98.75, -65.35], [99.0, -65.25], [99.25, -65.35], [99.5, -65.25], [99.75, -65.35], [100.0, -65.25], [100.25, -65.35], [100.5, -65.25], [101.03, -65.47], [101.25, -66.0], [101.15, -66.25], [101.25, -66.5], [101.03, -67.03], [100.5, -67.25], [100.25, -67.15], [100.18, -67.18], [100.03, -67.53], [99.68, -67.68], [99.53, -68.03], [99.18, -68.18], [99.03, -68.53], [98.5, -68.75], [97.97, -68.53], [97.8, -68.12], [97.5, -68.25], [97.25, -68.15], [97.0, -68.25], [96.47, -68.03], [96.32, -67.68], [96.25, -67.65], [96.0, -67.75], [95.75, -67.65], [95.68, -67.68], [95.53, -68.03], [95.0, -68.25], [94.75, -68.15], [94.5, -68.25], [94.25, -68.15], [94.0, -68.25], [93.75, -68.15], [93.5, -68.25], [93.25, -68.15], [93.0, -68.25], [92.75, -68.15], [92.5, -68.25], [92.25, -68.15], [92.0, -68.25], [91.75, -68.15], [91.5, -68.25], [91.25, -68.15], [91.0, -68.25], [90.47, -68.03], [90.32, -67.68], [90.25, -67.65], [90.0, -67.75], [89.75, -67.65], [89.5, -67.75], [89.25, -67.65], [89.0, -67.75], [88.75, -67.65], [88.5, -67.75], [88.25, -67.65], [88.0, -67.75], [87.75, -67.65], [87.5, -67.75], [87.25, -67.65], [87.0, -67.75], [86.75, -67.65], [86.5, -67.75], [86.25, -67.65], [86.0, -67.75], [85.75, -67.65], [85.5, -67.75], [85.25, -67.65], [85.0, -67.75], [84.75, -67.65], [84.5, -67.75], [84.25, -67.65], [84.0, -67.75]]]]}, "2025-08-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[90.5, -66.25], [89.97, -66.03], [89.75, -65.5], [89.97, -64.97], [90.5, -64.75], [90.75, -64.85], [91.0, -64.75], [91.25, -64.85], [91.5, -64.75], [91.75, -64.85], [92.0, -64.75], [92.53, -64.97], [92.75, -65.5], [92.53, -66.03], [92.0, -66.25], [91.75, -66.15], [91.5, -66.25], [91.25, -66.15], [91.0, -66.25], [90.75, -66.15], [90.5, -66.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 12.800652328393113}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 8.979125496135607}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-10.415923994209095, -9.280465076307962, -10.088162913810265, -8.298606618245401]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-6.104394022623694, -4.4624771118163835, -4.881133778889932, -8.090720876057901]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [8.379546077623099, 9.684878197801957, 8.998447668443754, 5.810365245720689]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [10.679761708419761, 12.800652328393113, 11.946852873142433, 5.971161191642409]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3870846175323228, 1.6689125167906846, 1.635835303117196, 1.332730426153304]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5149927175383053, 2.032503131069151, 1.9926547778863957, 1.3625074641818018]}}