{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:01:13.843895", "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-Sep-26_to_2024-Oct-01_148.0_21.0"}, "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": 2024090002274}, "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": "September 26 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 01 2024"}, "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": "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": 101729.9613513366}, "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": ["Northern Mariana Islands"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Oceania"]}, "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": ["Fryer Guyot", "Pacific 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": 21.0}, "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": 148.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "148.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 147.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 150.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 17.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 21.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[149.68, 17.82], [149.65, 17.75], [149.75, 17.5], [149.53, 16.97], [149.0, 16.75], [148.47, 16.97], [148.25, 17.5], [148.35, 17.75], [148.32, 17.82], [147.97, 17.97], [147.82, 18.32], [147.47, 18.47], [147.32, 18.82], [146.97, 18.97], [146.75, 19.5], [146.85, 19.75], [146.82, 19.82], [146.47, 19.97], [146.25, 20.5], [146.35, 20.75], [146.25, 21.0], [146.47, 21.53], [146.82, 21.68], [146.97, 22.03], [147.5, 22.25], [147.75, 22.15], [148.0, 22.25], [148.25, 22.15], [148.5, 22.25], [149.03, 22.03], [149.18, 21.68], [149.53, 21.53], [149.68, 21.18], [150.03, 21.03], [150.25, 20.5], [150.15, 20.25], [150.18, 20.18], [150.53, 20.03], [150.75, 19.5], [150.65, 19.25], [150.75, 19.0], [150.53, 18.47], [150.18, 18.32], [150.03, 17.97], [149.68, 17.82]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Pacific-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-09-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[148.97, 19.03], [149.5, 19.25], [150.03, 19.03], [150.25, 18.5], [150.03, 17.97], [149.5, 17.75], [148.97, 17.97], [148.75, 18.5], [148.97, 19.03]]]]}, "2024-09-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.75, 20.0], [146.97, 20.53], [147.32, 20.68], [147.35, 20.75], [147.32, 20.82], [146.97, 20.97], [146.75, 21.5], [146.97, 22.03], [147.5, 22.25], [148.03, 22.03], [148.18, 21.68], [148.53, 21.53], [148.75, 21.0], [148.65, 20.75], [148.68, 20.68], [148.75, 20.65], [149.0, 20.75], [149.25, 20.65], [149.5, 20.75], [150.03, 20.53], [150.18, 20.18], [150.53, 20.03], [150.75, 19.5], [150.65, 19.25], [150.75, 19.0], [150.53, 18.47], [150.18, 18.32], [150.03, 17.97], [149.68, 17.82], [149.65, 17.75], [149.75, 17.5], [149.53, 16.97], [149.0, 16.75], [148.47, 16.97], [148.25, 17.5], [148.35, 17.75], [148.32, 17.82], [147.97, 17.97], [147.82, 18.32], [147.47, 18.47], [147.32, 18.82], [146.97, 18.97], [146.75, 19.5], [146.85, 19.75], [146.75, 20.0]]]]}, "2024-09-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.75, 20.0], [146.97, 20.53], [147.32, 20.68], [147.35, 20.75], [147.32, 20.82], [146.97, 20.97], [146.75, 21.5], [146.97, 22.03], [147.5, 22.25], [148.03, 22.03], [148.18, 21.68], [148.53, 21.53], [148.75, 21.0], [148.65, 20.75], [148.68, 20.68], [148.75, 20.65], [149.0, 20.75], [149.25, 20.65], [149.5, 20.75], [150.03, 20.53], [150.18, 20.18], [150.53, 20.03], [150.75, 19.5], [150.65, 19.25], [150.75, 19.0], [150.53, 18.47], [150.18, 18.32], [150.03, 17.97], [149.68, 17.82], [149.65, 17.75], [149.75, 17.5], [149.53, 16.97], [149.0, 16.75], [148.47, 16.97], [148.25, 17.5], [148.35, 17.75], [148.32, 17.82], [147.97, 17.97], [147.82, 18.32], [147.47, 18.47], [147.32, 18.82], [146.97, 18.97], [146.75, 19.5], [146.85, 19.75], [146.75, 20.0]]]]}, "2024-09-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.25, 21.0], [146.47, 21.53], [146.82, 21.68], [146.97, 22.03], [147.5, 22.25], [147.75, 22.15], [148.0, 22.25], [148.25, 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duration", "value": 1.2554727833625634}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 0.877817668145614}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.387944793701195, 28.563232676188136, 28.340962558322474, 28.42337842668809, 28.586380861516602, 28.393556213378872]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.387944793701195, 28.788645680745446, 28.54225311279299, 28.565456644694052, 28.71706034342452, 28.548015848795615]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.8404851315509632, 1.0078278285059288, 0.7792706626063671, 0.8529928963185675, 0.9892891749675408, 0.7742979421045106]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [0.8404851315509632, 1.2554727833625634, 0.9685769493179919, 1.0130756296309187, 1.1328128759781748, 0.9074580509086445]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6369919253727043, 2.016429787858114, 1.6329829330701797, 1.783163554673338, 2.055253736632188, 1.6141743412708178]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6369919253727043, 2.5483580156729064, 2.039592011151614, 2.1694708572775325, 2.454566946583374, 1.8123096464121635]}}