{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:59:03.167541", "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": "2024-May-18_to_2024-May-21_304.0_-75.5"}, "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": 2024050001748}, "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": "May 18 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 21 2024"}, "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": 86433.82715460779}, "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": ["Weddell 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": -75.5}, "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": 304.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "304.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 299.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 310.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -77.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -72.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-60.5, -76.25], [-60.25, -76.35], [-60.18, -76.32], [-60.03, -75.97], [-59.5, -75.75], [-59.25, -75.85], [-59.0, -75.75], [-58.75, -75.85], [-58.68, -75.82], [-58.53, -75.47], [-58.0, -75.25], [-57.75, -75.35], [-57.68, -75.32], [-57.53, -74.97], [-57.18, -74.82], [-57.03, -74.47], [-56.68, -74.32], [-56.53, -73.97], [-56.0, -73.75], [-55.75, -73.85], [-55.68, -73.82], [-55.53, -73.47], [-55.0, -73.25], [-54.75, -73.35], [-54.68, -73.32], [-54.65, -73.25], [-54.75, -73.0], [-54.65, -72.75], [-54.75, -72.5], [-54.53, -71.97], [-54.0, -71.75], [-53.47, -71.97], [-53.32, -72.32], [-53.25, -72.35], [-53.0, -72.25], [-52.47, -72.47], [-52.32, -72.82], [-52.25, -72.85], [-52.0, -72.75], [-51.75, -72.85], [-51.5, -72.75], [-51.25, -72.85], [-51.0, -72.75], [-50.75, -72.85], [-50.68, -72.82], [-50.53, -72.47], [-50.0, -72.25], [-49.47, -72.47], [-49.25, -73.0], [-49.35, -73.25], [-49.32, -73.32], [-48.97, -73.47], [-48.75, -74.0], [-48.97, -74.53], [-49.32, -74.68], [-49.35, -74.75], [-49.25, -75.0], [-49.47, -75.53], [-49.82, -75.68], [-49.97, -76.03], [-50.5, -76.25], [-50.75, -76.15], [-51.0, -76.25], [-51.25, -76.15], [-51.5, -76.25], [-51.75, -76.15], [-52.0, -76.25], [-52.25, -76.15], [-52.32, -76.18], [-52.35, -76.25], [-52.25, -76.5], [-52.47, -77.03], [-53.0, -77.25], [-53.25, -77.15], [-53.5, -77.25], [-53.75, -77.15], [-54.0, -77.25], [-54.25, -77.15], [-54.32, -77.18], [-54.47, -77.53], [-55.0, -77.75], [-55.25, -77.65], [-55.32, -77.68], [-55.47, -78.03], [-56.0, -78.25], [-56.25, -78.15], [-56.5, -78.25], [-56.75, -78.15], [-57.0, -78.25], [-57.25, -78.15], [-57.5, -78.25], [-57.75, -78.15], [-58.0, -78.25], [-58.25, -78.15], [-58.5, -78.25], [-58.75, -78.15], [-59.0, -78.25], [-59.25, -78.15], [-59.5, -78.25], [-59.75, -78.15], [-60.0, -78.25], [-60.53, -78.03], [-60.68, -77.68], [-61.03, -77.53], [-61.25, -77.0], [-61.03, -76.47], [-60.5, -76.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Antarctica", "W.Antarctica", "Southern-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-05-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.5, -77.25], [-60.02999999999997, -77.03], [-60.25, -76.5], [-60.02999999999997, -75.97], [-59.5, -75.75], [-59.25, -75.85], [-59.0, -75.75], [-58.75, -75.85], [-58.68000000000001, -75.82], [-58.52999999999997, -75.47], [-58.0, -75.25], [-57.75, -75.35], [-57.68000000000001, -75.32], [-57.52999999999997, -74.97], [-57.18000000000001, -74.82], [-57.02999999999997, -74.47], [-56.68000000000001, -74.32], [-56.52999999999997, -73.97], [-56.0, -73.75], [-55.75, -73.85], [-55.5, -73.75], [-55.25, -73.85], [-55.18000000000001, -73.82], [-55.02999999999997, -73.47], [-54.68000000000001, -73.32], [-54.64999999999998, -73.25], [-54.75, -73.0], [-54.64999999999998, -72.75], [-54.75, -72.5], [-54.52999999999997, -71.97], [-54.0, -71.75], [-53.47000000000003, -71.97], [-53.31999999999999, -72.32], [-53.25, -72.35], [-53.0, -72.25], [-52.47000000000003, -72.47], [-52.31999999999999, -72.82], [-52.25, -72.85], [-52.0, -72.75], [-51.75, -72.85], [-51.5, -72.75], [-51.25, -72.85], [-51.0, -72.75], [-50.75, -72.85], [-50.68000000000001, -72.82], [-50.52999999999997, -72.47], [-50.0, -72.25], [-49.47000000000003, -72.47], [-49.25, -73.0], [-49.35000000000002, -73.25], [-49.31999999999999, -73.32], [-48.97000000000003, -73.47], [-48.75, -74.0], [-48.97000000000003, -74.53], [-49.31999999999999, -74.68], [-49.35000000000002, -74.75], [-49.25, -75.0], [-49.47000000000003, -75.53], [-49.81999999999999, -75.68], [-49.97000000000003, -76.03], [-50.5, -76.25], [-50.75, -76.15], [-51.0, -76.25], [-51.25, -76.15], [-51.5, -76.25], [-51.75, -76.15], [-52.0, -76.25], [-52.25, -76.15], [-52.31999999999999, -76.18], [-52.35000000000002, -76.25], [-52.25, -76.5], [-52.47000000000003, -77.03], [-53.0, -77.25], [-53.25, -77.15], [-53.5, -77.25], [-53.75, -77.15], [-54.0, -77.25], [-54.25, -77.15], [-54.5, -77.25], [-54.75, -77.15], [-55.0, -77.25], [-55.25, -77.15], [-55.5, -77.25], [-55.75, -77.15], [-56.0, -77.25], [-56.25, -77.15], [-56.31999999999999, -77.18], [-56.47000000000003, -77.53], [-57.0, -77.75], [-57.25, -77.65], [-57.5, -77.75], [-58.02999999999997, -77.53], [-58.18000000000001, -77.18], [-58.25, -77.15], [-58.5, -77.25], [-58.75, -77.15], [-59.0, -77.25], [-59.25, -77.15], [-59.5, -77.25]]]]}, "2024-05-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.02999999999997, -77.53], [-61.25, -77.0], [-61.02999999999997, -76.47], [-60.5, -76.25], [-60.25, -76.35], [-60.18000000000001, -76.32], [-60.02999999999997, -75.97], [-59.5, -75.75], [-59.25, -75.85], [-59.0, -75.75], [-58.75, -75.85], [-58.68000000000001, -75.82], [-58.52999999999997, -75.47], [-58.0, -75.25], [-57.75, -75.35], [-57.68000000000001, -75.32], [-57.52999999999997, -74.97], [-57.18000000000001, -74.82], [-57.02999999999997, -74.47], [-56.68000000000001, -74.32], [-56.52999999999997, -73.97], [-56.0, -73.75], [-55.75, -73.85], [-55.68000000000001, -73.82], [-55.52999999999997, -73.47], [-55.0, -73.25], [-54.75, -73.35], [-54.68000000000001, -73.32], [-54.64999999999998, -73.25], [-54.75, -73.0], [-54.64999999999998, -72.75], [-54.75, -72.5], [-54.52999999999997, -71.97], [-54.0, -71.75], [-53.47000000000003, -71.97], [-53.31999999999999, -72.32], [-53.25, -72.35], [-53.0, -72.25], [-52.47000000000003, -72.47], [-52.31999999999999, -72.82], [-52.25, -72.85], [-52.0, -72.75], [-51.75, -72.85], [-51.5, -72.75], [-51.25, -72.85], [-51.0, -72.75], [-50.75, -72.85], [-50.68000000000001, -72.82], [-50.52999999999997, -72.47], [-50.0, -72.25], [-49.47000000000003, -72.47], [-49.25, -73.0], [-49.35000000000002, -73.25], [-49.31999999999999, -73.32], [-48.97000000000003, -73.47], [-48.75, -74.0], [-48.97000000000003, -74.53], [-49.31999999999999, -74.68], [-49.35000000000002, -74.75], [-49.25, -75.0], [-49.47000000000003, -75.53], [-49.81999999999999, -75.68], [-49.97000000000003, -76.03], [-50.5, -76.25], [-50.75, -76.15], [-51.0, -76.25], [-51.25, -76.15], [-51.5, -76.25], [-51.75, -76.15], [-52.0, -76.25], [-52.25, -76.15], [-52.31999999999999, -76.18], [-52.35000000000002, -76.25], [-52.25, -76.5], [-52.47000000000003, -77.03], [-53.0, -77.25], [-53.25, -77.15], [-53.5, -77.25], [-53.75, -77.15], [-54.0, -77.25], [-54.25, -77.15], [-54.31999999999999, -77.18], [-54.47000000000003, -77.53], [-55.0, -77.75], [-55.25, -77.65], [-55.31999999999999, -77.68], [-55.47000000000003, -78.03], [-56.0, -78.25], [-56.25, -78.15], [-56.5, -78.25], [-56.75, -78.15], [-57.0, -78.25], [-57.25, -78.15], [-57.5, -78.25], [-57.75, -78.15], [-58.0, -78.25], [-58.25, -78.15], [-58.5, -78.25], [-58.75, -78.15], [-59.0, -78.25], [-59.25, -78.15], [-59.5, -78.25], [-59.75, -78.15], [-60.0, -78.25], [-60.52999999999997, -78.03], [-60.68000000000001, -77.68], [-61.02999999999997, -77.53]]]]}, "2024-05-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.02999999999997, -77.53], [-61.25, -77.0], [-61.02999999999997, -76.47], [-60.5, -76.25], [-60.25, -76.35], [-60.18000000000001, -76.32], [-60.02999999999997, -75.97], [-59.5, -75.75], [-59.25, -75.85], [-59.0, -75.75], [-58.75, -75.85], [-58.68000000000001, -75.82], [-58.52999999999997, -75.47], [-58.0, -75.25], [-57.75, -75.35], [-57.68000000000001, -75.32], [-57.52999999999997, -74.97], [-57.18000000000001, -74.82], [-57.02999999999997, -74.47], [-56.68000000000001, -74.32], [-56.52999999999997, -73.97], [-56.0, -73.75], [-55.75, -73.85], [-55.68000000000001, -73.82], [-55.52999999999997, -73.47], [-55.0, -73.25], [-54.75, -73.35], [-54.68000000000001, -73.32], [-54.64999999999998, -73.25], [-54.75, -73.0], [-54.64999999999998, -72.75], [-54.75, -72.5], [-54.52999999999997, -71.97], [-54.0, -71.75], [-53.47000000000003, -71.97], [-53.31999999999999, -72.32], [-53.25, -72.35], [-53.0, -72.25], [-52.47000000000003, -72.47], [-52.31999999999999, -72.82], [-52.25, -72.85], [-52.0, -72.75], [-51.75, -72.85], [-51.5, -72.75], [-51.25, -72.85], [-51.0, -72.75], [-50.75, -72.85], [-50.68000000000001, -72.82], [-50.52999999999997, -72.47], [-50.0, -72.25], [-49.47000000000003, -72.47], [-49.25, -73.0], [-49.35000000000002, -73.25], [-49.31999999999999, -73.32], [-48.97000000000003, -73.47], [-48.75, -74.0], [-48.97000000000003, -74.53], [-49.31999999999999, -74.68], [-49.35000000000002, -74.75], [-49.25, -75.0], [-49.47000000000003, -75.53], [-49.81999999999999, -75.68], [-49.97000000000003, -76.03], [-50.5, -76.25], [-50.75, -76.15], [-51.0, -76.25], [-51.25, -76.15], [-51.5, -76.25], [-51.75, -76.15], [-52.0, -76.25], [-52.25, -76.15], [-52.31999999999999, -76.18], [-52.35000000000002, -76.25], [-52.25, -76.5], [-52.47000000000003, -77.03], [-53.0, -77.25], [-53.25, -77.15], [-53.5, -77.25], [-53.75, -77.15], [-54.0, -77.25], [-54.25, -77.15], [-54.31999999999999, -77.18], [-54.47000000000003, -77.53], [-55.0, -77.75], [-55.25, -77.65], [-55.31999999999999, -77.68], [-55.47000000000003, -78.03], [-56.0, -78.25], [-56.25, -78.15], [-56.5, -78.25], [-56.75, -78.15], [-57.0, -78.25], [-57.25, -78.15], [-57.5, -78.25], [-57.75, -78.15], [-58.0, -78.25], [-58.25, -78.15], [-58.5, -78.25], [-58.75, -78.15], [-59.0, -78.25], [-59.25, -78.15], [-59.5, -78.25], [-59.75, -78.15], [-60.0, -78.25], [-60.52999999999997, -78.03], [-60.68000000000001, -77.68], [-61.02999999999997, -77.53]]]]}, "2024-05-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.02999999999997, -77.53], [-61.25, -77.0], [-61.02999999999997, -76.47], [-60.5, -76.25], [-60.25, -76.35], [-60.0, -76.25], [-59.75, -76.35], [-59.5, -76.25], [-59.25, -76.35], [-59.18000000000001, -76.32], [-59.02999999999997, -75.97], [-58.68000000000001, -75.82], [-58.52999999999997, -75.47], [-58.0, -75.25], [-57.75, -75.35], [-57.68000000000001, -75.32], [-57.52999999999997, -74.97], [-57.18000000000001, -74.82], [-57.02999999999997, -74.47], [-56.68000000000001, -74.32], [-56.52999999999997, -73.97], [-56.0, -73.75], [-55.75, -73.85], [-55.68000000000001, -73.82], [-55.52999999999997, -73.47], [-55.0, -73.25], [-54.47000000000003, -73.47], [-54.31999999999999, -73.82], [-53.97000000000003, -73.97], [-53.81999999999999, -74.32], [-53.75, -74.35], [-53.5, -74.25], [-52.97000000000003, -74.47], [-52.75, -75.0], [-52.85000000000002, -75.25], [-52.75, -75.5], [-52.85000000000002, -75.75], [-52.75, -76.0], [-52.97000000000003, -76.53], [-53.31999999999999, -76.68], [-53.47000000000003, -77.03], [-54.0, -77.25], [-54.25, -77.15], [-54.31999999999999, -77.18], [-54.47000000000003, -77.53], [-55.0, -77.75], [-55.25, -77.65], [-55.31999999999999, -77.68], [-55.47000000000003, -78.03], [-56.0, -78.25], [-56.25, -78.15], [-56.5, -78.25], [-56.75, -78.15], [-57.0, -78.25], [-57.25, -78.15], [-57.5, -78.25], [-57.75, -78.15], [-58.0, -78.25], [-58.25, -78.15], [-58.5, -78.25], [-58.75, -78.15], [-59.0, -78.25], [-59.25, -78.15], [-59.5, -78.25], [-59.75, -78.15], [-60.0, -78.25], [-60.52999999999997, -78.03], [-60.68000000000001, -77.68], [-61.02999999999997, -77.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 12.563357828253174}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 8.67066271815441}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-18.872791456105404, -19.402839114165346, -19.45502338128614, -23.563929317452732]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-13.82862556117226, -16.439085323191705, -15.977700238235627, -17.924848435574972]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.784718956628377, 9.027817507324501, 9.341906576332127, 8.120968168043946]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [10.206043060479345, 11.941162131272876, 12.563357828253174, 9.53639916928887]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4744114636953762, 1.7342488000785385, 1.8383804789062475, 1.5553479476845782]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7677064928997137, 2.15173978425689, 2.27584914512357, 1.7608894747671873]}}