{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-08-31 16:20:33.466887", "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": "2026-Aug-16_to_2026-Aug-21_152.5_-10.0"}, "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": 2026080000457}, "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 16 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 21 2026"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 94551.67660768463}, "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": ["Papua New Guinea"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Equatorial.Pacific-Ocean", "N.Australia", "S.E.Asia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "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": ["Solomon 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": -10.0}, "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": 152.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "152.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 150.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 154.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -11.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -6.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-08-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[151.75, -10.0], [151.97, -9.47], [152.38, -9.3], [152.25, -9.0], [152.35, -8.75], [152.25, -8.5], [152.47, -7.97], [153.0, -7.75], [153.25, -7.85], [153.5, -7.75], [154.03, -7.97], [154.18, -8.32], [154.53, -8.47], [154.68, -8.82], [155.03, -8.97], [155.25, -9.5], [155.15, -9.75], [155.25, -10.0], [155.03, -10.53], [154.5, -10.75], [154.25, -10.65], [154.18, -10.68], [154.03, -11.03], [153.5, -11.25], [153.25, -11.15], [153.0, -11.25], [152.47, -11.03], [152.32, -10.68], [151.97, -10.53], [151.75, -10.0]]]]}, "2026-08-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[151.35, -8.75], [151.25, -8.5], [151.47, -7.97], [151.82, -7.82], [151.85, -7.75], [151.75, -7.5], [151.97, -6.97], [152.32, -6.82], [152.47, -6.47], [153.0, -6.25], [153.53, -6.47], [153.75, -7.0], [153.65, -7.25], [153.75, -7.5], [153.65, -7.75], [153.68, -7.82], [154.03, -7.97], [154.18, -8.32], [154.53, -8.47], [154.68, -8.82], [155.03, -8.97], [155.25, -9.5], [155.15, -9.75], [155.25, -10.0], [155.03, -10.53], [154.5, -10.75], [154.25, -10.65], [154.18, -10.68], [154.03, -11.03], [153.5, -11.25], [153.25, -11.15], [153.0, -11.25], [152.47, -11.03], [152.32, -10.68], [151.97, -10.53], [151.82, -10.18], [151.47, -10.03], [151.25, -9.5], [151.35, -9.25], [151.25, -9.0], [151.35, -8.75]]]]}, "2026-08-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[151.35, -9.25], [151.25, -9.0], [151.35, -8.75], [151.25, -8.5], [151.47, -7.97], [151.82, -7.82], [151.85, -7.75], [151.75, -7.5], [151.97, -6.97], [152.32, -6.82], [152.47, -6.47], [153.0, -6.25], [153.53, -6.47], [153.75, -7.0], [153.65, -7.25], [153.75, -7.5], [153.65, -7.75], [153.68, -7.82], [154.03, -7.97], [154.18, -8.32], [154.53, -8.47], [154.68, -8.82], [155.03, -8.97], [155.25, -9.5], [155.15, -9.75], [155.25, -10.0], [155.03, -10.53], [154.5, -10.75], [154.25, -10.65], [154.18, -10.68], [154.03, -11.03], [153.5, -11.25], [153.25, -11.15], [153.0, -11.25], [152.47, -11.03], [152.32, -10.68], [152.25, -10.65], [152.0, -10.75], [151.47, -10.53], [151.25, -10.0], [151.35, -9.75], [151.25, -9.5], [151.35, -9.25]]]]}, "2026-08-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[150.25, -10.0], [150.47, -9.47], [150.82, -9.32], [150.97, -8.97], [151.32, -8.82], [151.35, -8.75], [151.25, -8.5], [151.35, -8.25], [151.25, -8.0], [151.47, -7.47], [151.82, -7.32], [151.97, -6.97], [152.32, -6.82], [152.47, -6.47], [153.0, -6.25], [153.53, -6.47], [153.75, -7.0], [153.65, -7.25], [153.75, -7.5], [153.65, -7.75], [153.68, -7.82], [154.03, -7.97], [154.25, -8.5], [154.15, -8.75], [154.25, -9.0], [154.03, -9.53], [153.5, -9.75], [153.25, -9.65], [153.13, -9.7], [153.18, -9.82], [153.53, -9.97], [153.75, -10.5], [153.53, -11.03], [153.0, -11.25], [152.7, -11.13], [152.53, -11.53], [152.0, -11.75], [151.47, -11.53], [151.32, -11.18], [150.97, -11.03], [150.82, -10.68], [150.47, -10.53], [150.25, -10.0]]]]}, "2026-08-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[150.25, -10.0], [150.47, -9.47], [150.82, -9.32], [150.97, 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-10.0], [153.03, -10.53], [152.68, -10.68], [152.65, -10.75], [152.75, -11.0], [152.53, -11.53], [152.0, -11.75], [151.47, -11.53], [151.32, -11.18], [150.97, -11.03], [150.82, -10.68], [150.47, -10.53], [150.25, -10.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.599689628989836}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.9526342198051659}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.966266462538044, 24.971020994324647, 25.06791458129885, 24.965222237326884, 24.62661885970681, 24.71559021778603]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.528142547607445, 24.59186706542971, 24.484988149007165, 23.544789886474632, 23.02049280802413, 23.27099761962893]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.9817930703913741, -1.0339116950620153, -0.9336983111797915, -0.8531881711612125, -1.0114637338383328, -0.9196131817316375]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.1931722751316443, -1.3207940216482825, -1.2616360084132339, -1.0547548336862747, -1.599689628989836, -1.3558950141224386]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.612496704611936, -1.768397711025779, -1.569128928108374, -1.4121412657940642, -1.657394668664033, -1.5609760756879938]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9628356979969235, -2.3089069920402348, -2.0792554814290534, -1.5931230985325207, -2.3320511735784155, -2.086569886663961]}}