{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:56:25.927571", "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-Jul-26_to_2025-Aug-01_299.0_-71.5"}, "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": 2025070002752}, "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": "July 26 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 01 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 119739.68268209315}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.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": ["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": -71.5}, "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": 299.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "299.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 293.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 301.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -76.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -65.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-07-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.03, -66.97], [-64.5, -66.75], [-63.97, -66.97], [-63.75, -67.5], [-63.96, -68.0], [-63.75, -68.5], [-63.97, -69.03], [-64.5, -69.25], [-65.03, -69.03], [-65.25, -68.5], [-65.04, -68.0], [-65.25, -67.5], [-65.03, -66.97]]]]}, "2025-07-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.53, -76.03], [-66.75, -75.5], [-66.53, -74.97], [-66.0, -74.75], [-65.75, -74.85], [-65.5, -74.75], [-65.0, -74.96], [-64.68, -74.82], [-64.53, -74.47], [-64.18, -74.32], [-64.03, -73.97], [-63.68, -73.82], [-63.53, -73.47], [-63.18, -73.32], [-63.03, -72.97], [-62.5, -72.75], [-62.25, -72.85], [-62.18, -72.82], [-62.15, -72.75], [-62.25, -72.5], [-62.15, -72.25], [-62.25, -72.0], [-62.15, -71.75], [-62.25, -71.5], [-62.15, -71.25], [-62.18, -71.18], [-62.53, -71.03], [-62.68, -70.68], [-63.03, -70.53], [-63.25, -70.0], [-63.15, -69.75], [-63.18, -69.68], [-63.25, -69.65], [-63.5, -69.75], [-64.03, -69.53], [-64.18, -69.18], [-64.25, -69.15], [-64.5, -69.25], [-64.75, -69.15], [-65.0, -69.25], [-65.53, -69.03], [-65.75, -68.5], [-65.65, -68.25], [-65.68, -68.18], [-66.03, -68.03], [-66.25, -67.5], [-66.03, -66.97], [-65.5, -66.75], [-65.25, -66.85], [-65.18, -66.82], [-65.03, -66.47], [-64.5, -66.25], [-64.25, -66.35], [-64.18, -66.32], [-64.03, -65.97], [-63.5, -65.75], [-63.25, -65.85], [-63.18, -65.82], [-63.03, -65.47], [-62.5, -65.25], [-61.97, -65.47], [-61.82, -65.82], [-61.75, -65.85], [-61.5, -65.75], [-60.97, -65.97], [-60.82, -66.32], [-60.75, -66.35], [-60.5, -66.25], [-59.97, -66.47], [-59.75, -67.0], [-59.96, -67.5], [-59.82, -67.82], [-59.75, -67.85], [-59.5, -67.75], [-59.25, -67.85], [-59.0, -67.75], [-58.47, -67.97], [-58.25, -68.5], [-58.47, -69.03], [-58.82, -69.18], [-58.97, -69.53], [-59.5, -69.75], [-59.75, -69.65], [-60.0, -69.75], [-60.25, -69.65], [-60.32, -69.68], [-60.47, -70.03], [-60.82, -70.18], [-60.85, -70.25], [-60.82, -70.32], [-60.47, -70.47], [-60.32, -70.82], [-59.97, -70.97], [-59.75, -71.5], [-59.87, -71.8], [-59.47, -71.97], [-59.25, -72.5], [-59.35, -72.75], [-59.25, -73.0], [-59.47, -73.53], [-60.0, -73.75], [-60.25, -73.65], [-60.32, -73.68], [-60.35, -73.75], [-60.25, -74.0], [-60.46, -74.5], [-60.32, -74.82], [-60.25, -74.85], [-60.0, -74.75], [-59.47, -74.97], [-59.25, -75.5], [-59.47, -76.03], [-60.0, -76.25], [-60.25, -76.15], [-60.5, -76.25], [-60.75, -76.15], [-60.82, -76.18], [-60.97, -76.53], [-61.5, -76.75], [-61.75, -76.65], [-62.0, -76.75], [-62.25, -76.65], [-62.5, -76.75], [-62.75, -76.65], [-63.0, -76.75], [-63.25, -76.65], [-63.5, -76.75], [-63.75, -76.65], [-64.0, -76.75], [-64.25, -76.65], [-64.5, -76.75], [-64.75, -76.65], [-65.0, -76.75], [-65.53, -76.53], [-65.68, -76.18], [-65.75, -76.15], [-66.0, -76.25], [-66.53, -76.03]]]]}, "2025-07-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.53, -76.03], [-66.75, -75.5], [-66.53, -74.97], [-66.0, -74.75], [-65.75, -74.85], [-65.5, -74.75], [-65.0, -74.96], [-64.68, -74.82], [-64.53, -74.47], [-64.18, -74.32], [-64.03, -73.97], [-63.68, -73.82], [-63.53, -73.47], [-63.18, -73.32], [-63.03, -72.97], [-62.5, -72.75], [-62.25, -72.85], [-62.18, -72.82], [-62.15, -72.75], [-62.25, -72.5], [-62.15, -72.25], [-62.25, -72.0], [-62.15, -71.75], [-62.25, -71.5], [-62.15, -71.25], [-62.18, -71.18], [-62.53, -71.03], [-62.68, -70.68], [-63.03, -70.53], [-63.25, -70.0], [-63.15, -69.75], [-63.18, -69.68], [-63.25, -69.65], [-63.5, -69.75], [-64.03, -69.53], [-64.18, -69.18], [-64.25, -69.15], [-64.5, -69.25], [-64.75, -69.15], [-65.0, -69.25], [-65.53, -69.03], [-65.75, -68.5], [-65.65, -68.25], [-65.68, -68.18], [-66.03, -68.03], [-66.25, -67.5], [-66.03, -66.97], [-65.5, -66.75], [-65.25, -66.85], [-65.18, -66.82], [-65.03, -66.47], [-64.5, -66.25], [-64.25, -66.35], [-64.18, -66.32], [-64.03, -65.97], [-63.5, -65.75], [-63.25, -65.85], [-63.18, -65.82], [-63.03, -65.47], [-62.5, -65.25], [-61.97, -65.47], [-61.82, -65.82], [-61.75, -65.85], [-61.5, -65.75], [-60.97, -65.97], [-60.82, -66.32], [-60.75, -66.35], [-60.5, -66.25], [-59.97, -66.47], [-59.75, -67.0], [-59.96, -67.5], [-59.82, -67.82], [-59.75, -67.85], [-59.5, -67.75], [-59.25, -67.85], [-59.0, -67.75], [-58.47, -67.97], [-58.25, -68.5], [-58.47, -69.03], [-58.82, -69.18], [-58.97, -69.53], [-59.5, -69.75], [-59.75, -69.65], [-60.0, -69.75], [-60.25, -69.65], [-60.32, -69.68], [-60.47, -70.03], [-60.82, -70.18], [-60.85, -70.25], [-60.82, -70.32], [-60.47, -70.47], [-60.32, -70.82], [-59.97, -70.97], [-59.75, -71.5], [-59.87, -71.8], [-59.47, -71.97], [-59.25, -72.5], [-59.35, -72.75], [-59.25, -73.0], [-59.47, -73.53], [-60.0, -73.75], [-60.25, -73.65], [-60.32, -73.68], [-60.35, -73.75], [-60.25, -74.0], [-60.46, -74.5], [-60.32, -74.82], [-60.25, -74.85], [-60.0, -74.75], [-59.47, -74.97], [-59.25, -75.5], [-59.47, -76.03], [-60.0, -76.25], [-60.25, -76.15], [-60.5, -76.25], [-60.75, -76.15], [-60.82, -76.18], [-60.97, -76.53], [-61.5, -76.75], [-61.75, -76.65], [-62.0, -76.75], [-62.25, -76.65], [-62.5, -76.75], [-62.75, -76.65], [-63.0, -76.75], [-63.25, -76.65], [-63.5, -76.75], [-63.75, -76.65], [-64.0, -76.75], [-64.25, -76.65], [-64.5, -76.75], [-64.75, -76.65], [-65.0, -76.75], [-65.53, -76.53], [-65.68, -76.18], [-65.75, -76.15], [-66.0, -76.25], [-66.53, -76.03]]]]}, "2025-07-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.53, -76.03], [-66.75, -75.5], [-66.53, -74.97], [-66.0, -74.75], [-65.75, -74.85], [-65.5, -74.75], [-65.0, -74.96], [-64.68, -74.82], [-64.53, -74.47], [-64.18, -74.32], [-64.03, -73.97], [-63.68, -73.82], [-63.53, -73.47], [-63.18, -73.32], [-63.03, -72.97], [-62.5, -72.75], [-62.25, -72.85], [-62.18, -72.82], [-62.15, -72.75], [-62.25, -72.5], [-62.15, -72.25], [-62.25, -72.0], [-62.15, -71.75], [-62.25, -71.5], [-62.15, -71.25], [-62.18, -71.18], [-62.53, -71.03], [-62.68, -70.68], [-63.03, -70.53], [-63.25, -70.0], [-63.15, -69.75], [-63.18, -69.68], [-63.25, -69.65], [-63.5, -69.75], [-64.03, -69.53], [-64.18, -69.18], [-64.25, -69.15], [-64.5, -69.25], [-64.75, -69.15], [-65.0, -69.25], [-65.53, -69.03], [-65.75, -68.5], [-65.65, -68.25], [-65.68, -68.18], [-66.03, -68.03], [-66.25, -67.5], [-66.03, -66.97], [-65.5, -66.75], [-65.25, -66.85], [-65.18, -66.82], [-65.03, -66.47], [-64.5, -66.25], [-64.25, -66.35], [-64.18, -66.32], [-64.03, -65.97], [-63.5, -65.75], [-63.25, -65.85], [-63.18, -65.82], [-63.03, -65.47], [-62.5, -65.25], [-61.97, -65.47], [-61.82, -65.82], [-61.75, -65.85], [-61.5, -65.75], [-60.97, -65.97], [-60.82, -66.32], [-60.75, -66.35], [-60.5, -66.25], [-59.97, -66.47], [-59.75, -67.0], [-59.96, -67.5], [-59.82, -67.82], [-59.75, -67.85], [-59.5, -67.75], [-59.25, -67.85], [-59.0, -67.75], [-58.47, -67.97], [-58.25, -68.5], [-58.47, -69.03], [-58.82, -69.18], [-58.97, -69.53], [-59.5, -69.75], [-59.75, -69.65], [-60.0, -69.75], [-60.25, -69.65], [-60.32, -69.68], [-60.47, -70.03], [-60.82, -70.18], [-60.85, -70.25], [-60.82, -70.32], [-60.47, -70.47], [-60.32, -70.82], [-59.97, -70.97], [-59.75, -71.5], [-59.87, -71.8], [-59.47, -71.97], [-59.25, -72.5], [-59.35, -72.75], [-59.25, -73.0], [-59.47, -73.53], [-60.0, -73.75], [-60.25, -73.65], [-60.32, -73.68], [-60.35, -73.75], [-60.25, -74.0], [-60.46, -74.5], [-60.32, -74.82], [-60.25, -74.85], [-60.0, -74.75], [-59.47, -74.97], [-59.25, -75.5], [-59.47, -76.03], [-60.0, -76.25], [-60.25, -76.15], [-60.5, -76.25], [-60.75, -76.15], [-60.82, -76.18], [-60.97, -76.53], [-61.5, -76.75], [-61.75, -76.65], [-62.0, -76.75], [-62.25, -76.65], [-62.5, -76.75], [-62.75, -76.65], [-63.0, -76.75], [-63.25, -76.65], [-63.5, -76.75], [-63.75, -76.65], [-64.0, -76.75], [-64.25, -76.65], [-64.5, -76.75], [-64.75, -76.65], [-65.0, -76.75], [-65.53, -76.53], [-65.68, -76.18], [-65.75, -76.15], [-66.0, -76.25], [-66.53, -76.03]]]]}, "2025-07-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.53, -76.53], [-65.75, -76.0], [-65.53, -75.47], [-65.0, -75.25], [-64.47, -75.47], [-64.25, -76.0], [-64.47, -76.53], [-65.0, -76.75], [-65.53, -76.53]]], [[[-61.53, -72.03], [-61.75, -71.5], [-61.53, -70.97], [-61.0, -70.75], [-60.47, -70.97], [-60.25, -71.5], [-60.47, -72.03], [-61.0, -72.25], [-61.53, -72.03]]]]}, "2025-07-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.53, -76.53], [-65.75, -76.0], [-65.53, -75.47], [-65.0, -75.25], [-64.47, -75.47], [-64.25, -76.0], [-64.47, -76.53], [-65.0, -76.75], [-65.53, -76.53]]], [[[-61.53, -72.03], [-61.75, -71.5], [-61.53, -70.97], [-61.0, -70.75], [-60.47, -70.97], [-60.25, -71.5], [-60.47, -72.03], [-61.0, -72.25], [-61.53, -72.03]]]]}, "2025-08-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.0, -70.75], [-60.47, -70.97], [-60.25, -71.5], [-60.47, -72.03], [-61.0, -72.25], [-61.53, -72.03], [-61.75, -71.5], [-61.53, -70.97], [-61.0, -70.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 19.681072418390357}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 13.173595636092127}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-9.778335316975927, -12.387296379580903, -10.010444418856423, -14.34504936068663, -21.095889472961403, -17.303238614400186, -15.190872573852516]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-8.890680694580055, -2.575768534342444, -0.9600992838541629, -4.692326609293616, -17.29091618855793, -13.715591812133766, -15.190872573852516]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [10.944056062229095, 13.053209647368654, 15.503771388769646, 11.11716470559885, 8.628312974022322, 12.27830095789821, 10.26412828251199]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [11.794766475563591, 18.219772253883804, 19.681072418390357, 16.866940450709734, 8.845749154690566, 12.700217670230103, 10.26412828251199]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5386935172505, 1.9950308879785268, 2.408972701731256, 1.723827989924204, 1.4329596499485537, 2.0655504342100732, 1.7997267699644661]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5904344097974454, 2.7529115763944003, 3.206062559642593, 2.462220914839815, 1.4477205118707281, 2.0731021250875883, 1.7997267699644661]}}