{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:16.878933", "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": "2021-Aug-29_to_2021-Aug-31_320.5_-63.5"}, "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": 2021080003128}, "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 29 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 31 2021"}, "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": 53593.740510149}, "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": ["Endurance Ridge", "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": -63.5}, "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": 320.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "320.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 317.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 323.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -63.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -61.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-41.75, -60.35], [-41.5, -60.25], [-41.25, -60.35], [-41.0, -60.25], [-40.5, -60.46], [-40.0, -60.25], [-39.75, -60.35], [-39.5, -60.25], [-38.97, -60.47], [-38.82, -60.82], [-38.75, -60.85], [-38.5, -60.75], [-38.25, -60.85], [-38.0, -60.75], [-37.47, -60.97], [-37.32, -61.32], [-36.97, -61.47], [-36.82, -61.82], [-36.47, -61.97], [-36.25, -62.5], [-36.47, -63.03], [-37.0, -63.25], [-37.25, -63.15], [-37.32, -63.18], [-37.47, -63.53], [-37.82, -63.68], [-37.97, -64.03], [-38.5, -64.25], [-38.75, -64.15], [-39.0, -64.25], [-39.25, -64.15], [-39.5, -64.25], [-40.03, -64.03], [-40.25, -63.5], [-40.15, -63.25], [-40.18, -63.18], [-40.53, -63.03], [-40.68, -62.68], [-40.75, -62.65], [-41.0, -62.75], [-41.53, -62.53], [-41.68, -62.18], [-41.75, -62.15], [-42.0, -62.25], [-42.25, -62.15], [-42.5, -62.25], [-43.03, -62.03], [-43.25, -61.5], [-43.03, -60.97], [-42.68, -60.82], [-42.53, -60.47], [-42.0, -60.25], [-41.75, -60.35]]]]}}, "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": {"2021-08-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-42.52999999999997, -60.47], [-42.0, -60.25], [-41.75, -60.35], [-41.5, -60.25], [-41.25, -60.35], [-41.0, -60.25], [-40.5, -60.46], [-40.0, -60.25], [-39.75, -60.35], [-39.5, -60.25], [-38.97000000000003, -60.47], [-38.81999999999999, -60.82], [-38.75, -60.85], [-38.5, -60.75], [-38.25, -60.85], [-38.0, -60.75], [-37.47000000000003, -60.97], [-37.31999999999999, -61.32], [-36.97000000000003, -61.47], [-36.81999999999999, -61.82], [-36.47000000000003, -61.97], [-36.25, -62.5], [-36.47000000000003, -63.03], [-37.0, -63.25], [-37.25, -63.15], [-37.31999999999999, -63.18], [-37.47000000000003, -63.53], [-37.81999999999999, -63.68], [-37.97000000000003, -64.03], [-38.5, -64.25], [-38.75, -64.15], [-39.0, -64.25], [-39.25, -64.15], [-39.5, -64.25], [-40.02999999999997, -64.03], [-40.25, -63.5], [-40.14999999999998, -63.25], [-40.18000000000001, -63.18], [-40.52999999999997, -63.03], [-40.68000000000001, -62.68], [-40.75, -62.65], [-41.0, -62.75], [-41.52999999999997, -62.53], [-41.68000000000001, -62.18], [-41.75, -62.15], [-42.0, -62.25], [-42.25, -62.15], [-42.5, -62.25], [-43.02999999999997, -62.03], [-43.25, -61.5], [-43.02999999999997, -60.97], [-42.68000000000001, -60.82], [-42.52999999999997, -60.47]]]]}, "2021-08-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-42.52999999999997, -60.47], [-42.0, -60.25], [-41.75, -60.35], [-41.5, -60.25], [-41.25, -60.35], [-41.0, -60.25], [-40.5, -60.46], [-40.0, -60.25], [-39.75, -60.35], [-39.5, -60.25], [-38.97000000000003, -60.47], [-38.81999999999999, -60.82], [-38.75, -60.85], [-38.5, -60.75], [-38.25, -60.85], [-38.0, -60.75], [-37.47000000000003, -60.97], [-37.31999999999999, -61.32], [-36.97000000000003, -61.47], [-36.81999999999999, -61.82], [-36.47000000000003, -61.97], [-36.25, -62.5], [-36.47000000000003, -63.03], [-37.0, -63.25], [-37.25, -63.15], [-37.31999999999999, -63.18], [-37.47000000000003, -63.53], [-37.81999999999999, -63.68], [-37.97000000000003, -64.03], [-38.5, -64.25], [-38.75, -64.15], [-39.0, -64.25], [-39.25, -64.15], [-39.5, -64.25], [-40.02999999999997, -64.03], [-40.25, -63.5], [-40.14999999999998, -63.25], [-40.18000000000001, -63.18], [-40.52999999999997, -63.03], [-40.68000000000001, -62.68], [-40.75, -62.65], [-41.0, -62.75], [-41.52999999999997, -62.53], [-41.68000000000001, -62.18], [-41.75, -62.15], [-42.0, -62.25], [-42.25, -62.15], [-42.5, -62.25], [-43.02999999999997, -62.03], [-43.25, -61.5], [-43.02999999999997, -60.97], [-42.68000000000001, -60.82], [-42.52999999999997, -60.47]]]]}, "2021-08-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-42.52999999999997, -60.47], [-42.0, -60.25], [-41.75, -60.35], [-41.5, -60.25], [-41.25, -60.35], [-41.0, -60.25], [-40.5, -60.46], [-40.0, -60.25], [-39.75, -60.35], [-39.5, -60.25], [-38.97000000000003, -60.47], [-38.81999999999999, -60.82], [-38.75, -60.85], [-38.5, -60.75], [-38.25, -60.85], [-38.0, -60.75], [-37.47000000000003, -60.97], [-37.31999999999999, -61.32], [-36.97000000000003, -61.47], [-36.81999999999999, -61.82], [-36.47000000000003, -61.97], [-36.25, -62.5], [-36.47000000000003, -63.03], [-37.0, -63.25], [-37.25, -63.15], [-37.31999999999999, -63.18], [-37.47000000000003, -63.53], [-37.81999999999999, -63.68], [-37.97000000000003, -64.03], [-38.5, -64.25], [-38.75, -64.15], [-39.0, -64.25], [-39.25, -64.15], [-39.5, -64.25], [-40.02999999999997, -64.03], [-40.25, -63.5], [-40.14999999999998, -63.25], [-40.18000000000001, -63.18], [-40.52999999999997, -63.03], [-40.68000000000001, -62.68], [-40.75, -62.65], [-41.0, -62.75], [-41.52999999999997, -62.53], [-41.68000000000001, -62.18], [-41.75, -62.15], [-42.0, -62.25], [-42.25, -62.15], [-42.5, -62.25], [-43.02999999999997, -62.03], [-43.25, -61.5], [-43.02999999999997, -60.97], [-42.68000000000001, -60.82], [-42.52999999999997, -60.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 10.046982022335953}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 8.016039343185163}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-2.6353808052987233, -2.5548591160682577, -2.23528913491117]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-1.5858399055460382, -1.7714413073222772, -1.3323979913964763]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [8.124120090255792, 7.86131330997046, 8.062684629329231]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [10.046982022335953, 9.208815926027057, 9.447727388311591]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.292697415437132, 1.278326998451455, 1.282477367115108]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.490202516984868, 1.3863184241280735, 1.370042209848609]}}