{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:52:46.653505", "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": "2023-Apr-12_to_2023-Apr-14_147.0_-3.5"}, "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": 2023040001892}, "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": "April 12 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 14 2023"}, "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": 92640.66962647563}, "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"]}, "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": ["Bismarck Sea", "New Guinea Basin", "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": -3.5}, "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": 147.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "147.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 143.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 148.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -4.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -1.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[142.82, -0.82], [142.97, -0.47], [143.5, -0.25], [143.75, -0.35], [144.0, -0.25], [144.53, -0.47], [144.68, -0.82], [144.75, -0.85], [145.0, -0.75], [145.53, -0.97], [145.68, -1.32], [145.75, -1.35], [146.0, -1.25], [146.53, -1.47], [146.68, -1.82], [147.03, -1.97], [147.18, -2.32], [147.25, -2.35], [147.5, -2.25], [148.03, -2.47], [148.18, -2.82], [148.53, -2.97], [148.75, -3.5], [148.53, -4.03], [148.0, -4.25], [147.75, -4.15], [147.68, -4.18], [147.53, -4.53], [147.0, -4.75], [146.47, -4.53], [146.32, -4.18], [146.25, -4.15], [146.0, -4.25], [145.47, -4.03], [145.32, -3.68], [144.97, -3.53], [144.82, -3.18], [144.75, -3.15], [144.5, -3.25], [143.97, -3.03], [143.82, -2.68], [143.75, -2.65], [143.5, -2.75], [143.25, -2.65], [143.0, -2.75], [142.47, -2.53], [142.25, -2.0], [142.35, -1.75], [142.25, -1.5], [142.47, -0.97], [142.82, -0.82]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.Asia", "Equatorial.Pacific-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-04-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.25, -1.5], [142.47, -0.97], [142.82, -0.82], [142.97, -0.47], [143.5, -0.25], [143.75, -0.35], [144.0, -0.25], [144.53, -0.47], [144.68, -0.82], [144.75, -0.85], [145.0, -0.75], [145.53, -0.97], [145.68, -1.32], [145.75, -1.35], [146.0, -1.25], [146.53, -1.47], [146.68, -1.82], [147.03, -1.97], [147.18, -2.32], [147.25, -2.35], [147.5, -2.25], [148.03, -2.47], [148.18, -2.82], [148.53, -2.97], [148.75, -3.5], [148.53, -4.03], [148.0, -4.25], [147.75, -4.15], [147.68, -4.18], [147.53, -4.53], [147.0, -4.75], [146.47, -4.53], [146.32, -4.18], [146.25, -4.15], [146.0, -4.25], [145.47, -4.03], [145.32, -3.68], [144.97, -3.53], [144.82, -3.18], [144.75, -3.15], [144.5, -3.25], [143.97, -3.03], [143.82, -2.68], [143.75, -2.65], [143.5, -2.75], [143.25, -2.65], [143.0, -2.75], [142.47, -2.53], [142.25, -2.0], [142.35, -1.75], [142.25, -1.5]]]]}, "2023-04-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.25, -1.5], [142.47, -0.97], [142.82, -0.82], [142.97, -0.47], [143.5, -0.25], [143.75, -0.35], [144.0, -0.25], [144.53, -0.47], [144.68, -0.82], [144.75, -0.85], [145.0, -0.75], [145.53, -0.97], [145.68, -1.32], [145.75, -1.35], [146.0, -1.25], [146.53, -1.47], [146.68, -1.82], [147.03, -1.97], [147.18, -2.32], [147.25, -2.35], [147.5, -2.25], [148.03, -2.47], [148.18, -2.82], [148.53, -2.97], [148.75, -3.5], [148.53, -4.03], [148.0, -4.25], [147.75, -4.15], [147.68, -4.18], [147.53, -4.53], [147.0, -4.75], [146.47, -4.53], [146.32, -4.18], [146.25, -4.15], [146.0, -4.25], [145.47, -4.03], [145.32, -3.68], [144.97, -3.53], [144.82, -3.18], [144.75, -3.15], [144.5, -3.25], [143.97, -3.03], [143.82, -2.68], [143.75, -2.65], [143.5, -2.75], [143.25, -2.65], [143.0, -2.75], [142.47, -2.53], [142.25, -2.0], [142.35, -1.75], [142.25, -1.5]]]]}, "2023-04-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.25, -1.5], [142.47, -0.97], [142.82, -0.82], [142.97, -0.47], [143.5, -0.25], [143.75, -0.35], [144.0, -0.25], [144.53, -0.47], [144.68, -0.82], [144.75, -0.85], [145.0, -0.75], [145.53, -0.97], [145.68, -1.32], [145.75, -1.35], [146.0, -1.25], [146.53, -1.47], [146.68, -1.82], [147.03, -1.97], [147.18, -2.32], [147.25, -2.35], [147.5, -2.25], [148.03, -2.47], [148.18, -2.82], [148.53, -2.97], [148.75, -3.5], [148.53, -4.03], [148.0, -4.25], [147.75, -4.15], [147.68, -4.18], [147.53, -4.53], [147.0, -4.75], [146.47, -4.53], [146.32, -4.18], [146.25, -4.15], [146.0, -4.25], [145.47, -4.03], [145.32, -3.68], [144.97, -3.53], [144.82, -3.18], [144.75, -3.15], [144.5, -3.25], [143.97, -3.03], [143.82, -2.68], [143.75, -2.65], [143.5, -2.75], [143.25, -2.65], [143.0, -2.75], [142.47, -2.53], [142.25, -2.0], [142.35, -1.75], [142.25, -1.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 1.9604864299571432}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.293854059381246}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.10731401450903, 28.72951345670606, 28.511886575265123]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.38703573617306, 29.05433897875548, 28.818238980661647]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.9394307137757418, 1.5664858451702306, 1.3756456191977653]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.2064321353018954, 1.9604864299571432, 1.7288076867320683]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.72631156977888, 2.8638220582012446, 2.5673704798408816]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.188114314783079, 3.581328742649661, 3.191386717419625]}}