{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:20:16.166369", "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": "2019-Aug-01_to_2019-Aug-07_139.0_-7.0"}, "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": 2019080000024}, "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 01 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 07 2019"}, "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": "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": 52158.40563590593}, "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": ["Indonesia", "Papua New Guinea"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": ["Arafura 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": -7.0}, "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": 139.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "139.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 138.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 141.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -7.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -5.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-08-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.5, -5.25], [141.03, -5.47], [141.25, -6.0], [141.03, -6.53], [140.5, -6.75], [139.97, -6.53], [139.75, -6.0], [139.97, -5.47], [140.5, -5.25]]]]}, "2019-08-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.5, -5.25], [141.03, -5.47], [141.25, -6.0], [141.03, -6.53], [140.5, -6.75], [139.97, -6.53], [139.75, -6.0], [139.97, -5.47], [140.5, -5.25]]]]}, "2019-08-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.5, -5.25], [141.03, -5.47], [141.25, -6.0], [141.03, -6.53], [140.5, -6.75], [139.97, -6.53], [139.75, -6.0], [139.97, -5.47], [140.5, -5.25]]]]}, "2019-08-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.97, -7.53], [137.75, -7.0], [137.97, -6.47], [138.5, -6.25], [138.75, -6.35], [138.82, -6.32], [138.97, -5.97], [139.5, -5.75], [139.75, -5.85], [139.82, -5.82], [139.97, -5.47], [140.5, -5.25], [141.03, -5.47], [141.18, -5.82], [141.53, -5.97], [141.68, -6.32], [142.03, -6.47], [142.25, -7.0], [142.03, -7.53], [141.68, -7.68], [141.53, -8.03], [141.0, -8.25], [140.75, -8.15], [140.5, -8.25], [139.97, -8.03], [139.82, -7.68], [139.75, -7.65], [139.5, -7.75], [139.25, -7.65], [139.0, -7.75], [138.75, -7.65], [138.5, -7.75], [137.97, -7.53]]]]}, "2019-08-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.97, -6.47], [138.5, -6.25], [138.75, -6.35], [138.82, -6.32], [138.97, -5.97], [139.5, -5.75], [139.75, -5.85], [140.0, -5.75], [140.25, -5.85], [140.5, -5.75], [140.75, -5.85], [141.0, -5.75], [141.53, -5.97], [141.68, -6.32], [142.03, -6.47], [142.25, -7.0], [142.03, -7.53], [141.68, -7.68], [141.53, -8.03], [141.0, -8.25], [140.75, -8.15], [140.5, -8.25], [140.0, -8.04], [139.5, -8.25], [139.25, -8.15], [139.0, -8.25], [138.75, -8.15], [138.5, -8.25], [137.97, -8.03], [137.75, -7.5], [137.85, -7.25], [137.75, -7.0], [137.97, -6.47]]]]}, "2019-08-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.97, -6.47], [138.5, -6.25], [138.75, -6.35], [138.82, -6.32], [138.97, -5.97], [139.5, -5.75], [139.75, -5.85], [140.0, -5.75], [140.25, -5.85], [140.5, -5.75], [140.75, -5.85], [141.0, -5.75], [141.53, -5.97], [141.68, -6.32], [142.03, -6.47], [142.25, -7.0], [142.03, -7.53], [141.68, -7.68], [141.53, -8.03], [141.0, -8.25], [140.75, -8.15], [140.5, -8.25], [140.0, -8.04], [139.5, -8.25], [139.25, -8.15], [139.0, -8.25], [138.75, -8.15], [138.5, -8.25], [137.97, -8.03], [137.75, -7.5], [137.85, -7.25], [137.75, -7.0], [137.97, -6.47]]]]}, "2019-08-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.97, -6.47], [138.5, -6.25], [138.75, -6.35], [138.82, -6.32], [138.97, -5.97], [139.5, -5.75], [140.03, -5.97], [140.25, -6.5], [140.15, -6.75], [140.25, -7.0], [140.15, -7.25], [140.25, -7.5], [140.03, -8.03], [139.5, -8.25], [139.25, -8.15], [139.0, -8.25], [138.75, -8.15], [138.5, -8.25], [137.97, -8.03], [137.75, -7.5], [137.85, -7.25], [137.75, -7.0], [137.97, -6.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.2766911582555736}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.2515421434713068}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.88647023127163, 24.2899107180574, 24.22646778907614, 23.8096996545994, 23.825173594039143, 24.284163021509812, 24.440327832772084]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.88647023127163, 24.2899107180574, 24.22646778907614, 23.28945813417323, 23.28297248743587, 23.578817757836532, 24.156622362674682]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5305159092310419, -1.1311627104009858, -1.1912460220868297, -1.4195681024428706, -1.4344189868378159, -0.9933723259144678, -1.0735458506339424]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.5305159092310419, -1.1311627104009858, -1.1912460220868297, -1.7152750663515803, -2.2766911582555736, -1.4766624751352424, -1.4134189518915719]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.108998665393016, -1.5345764244010662, -1.6267446194720605, -2.247729093536584, -2.204406018374428, -1.5346840583738808, -1.6057986017833221]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.108998665393016, -1.5345764244010662, -1.6267446194720605, -2.7511928668157957, -3.337970263406296, -2.298634235480976, -2.0566441026685]}}