{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:59:16.307630", "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-Jun-18_to_2024-Jun-20_210.5_-17.5"}, "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": 2024060000536}, "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": "June 18 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 20 2024"}, "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": "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": 64593.70951408806}, "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": ["French Polynesia"]}, "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": ["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": -17.5}, "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": 210.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "210.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 208.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 211.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -20.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -16.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-152.25, -19.0], [-152.15, -18.75], [-152.25, -18.5], [-152.03, -17.97], [-151.68, -17.82], [-151.53, -17.47], [-151.18, -17.32], [-151.03, -16.97], [-150.68, -16.82], [-150.53, -16.47], [-150.18, -16.32], [-150.03, -15.97], [-149.5, -15.75], [-149.25, -15.85], [-149.0, -15.75], [-148.75, -15.85], [-148.5, -15.75], [-147.97, -15.97], [-147.75, -16.5], [-147.85, -16.75], [-147.75, -17.0], [-147.97, -17.53], [-148.5, -17.75], [-148.75, -17.65], [-148.82, -17.68], [-148.97, -18.03], [-149.5, -18.25], [-149.75, -18.15], [-149.82, -18.18], [-149.96, -18.5], [-149.75, -19.0], [-149.85, -19.25], [-149.75, -19.5], [-149.85, -19.75], [-149.75, -20.0], [-149.97, -20.53], [-150.5, -20.75], [-150.75, -20.65], [-151.0, -20.75], [-151.25, -20.65], [-151.5, -20.75], [-152.03, -20.53], [-152.25, -20.0], [-152.15, -19.75], [-152.25, -19.5], [-152.15, -19.25], [-152.25, -19.0]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Pacific-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-06-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-152.25, -19.5], [-152.15, -19.25], [-152.25, -19.0], [-152.15, -18.75], [-152.25, -18.5], [-152.03, -17.97], [-151.68, -17.82], [-151.53, -17.47], [-151.18, -17.32], [-151.03, -16.97], [-150.68, -16.82], [-150.53, -16.47], [-150.18, -16.32], [-150.03, -15.97], [-149.5, -15.75], [-149.25, -15.85], [-149.0, -15.75], [-148.75, -15.85], [-148.5, -15.75], [-147.97, -15.97], [-147.75, -16.5], [-147.85, -16.75], [-147.75, -17.0], [-147.97, -17.53], [-148.5, -17.75], [-148.75, -17.65], [-148.82, -17.68], [-148.97, -18.03], [-149.5, -18.25], [-149.75, -18.15], [-149.82, -18.18], [-149.96, -18.5], [-149.75, -19.0], [-149.85, -19.25], [-149.75, -19.5], [-149.85, -19.75], [-149.75, -20.0], [-149.97, -20.53], [-150.5, -20.75], [-150.75, -20.65], [-151.0, -20.75], [-151.25, -20.65], [-151.5, -20.75], [-152.03, -20.53], [-152.25, -20.0], [-152.15, -19.75], [-152.25, -19.5]]]]}, "2024-06-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-152.25, -19.5], [-152.15, -19.25], [-152.25, -19.0], [-152.15, -18.75], [-152.25, -18.5], [-152.03, -17.97], [-151.68, -17.82], [-151.53, -17.47], [-151.18, -17.32], [-151.03, -16.97], [-150.68, -16.82], [-150.53, -16.47], [-150.18, -16.32], [-150.03, -15.97], [-149.5, -15.75], [-149.25, -15.85], [-149.0, -15.75], [-148.75, -15.85], [-148.5, -15.75], [-147.97, -15.97], [-147.75, -16.5], [-147.85, -16.75], [-147.75, -17.0], [-147.97, -17.53], [-148.5, -17.75], [-148.75, -17.65], [-148.82, -17.68], [-148.97, -18.03], [-149.5, -18.25], [-149.75, -18.15], [-149.82, -18.18], [-149.96, -18.5], [-149.75, -19.0], [-149.85, -19.25], [-149.75, -19.5], [-149.85, -19.75], [-149.75, -20.0], [-149.97, -20.53], [-150.5, -20.75], [-150.75, -20.65], [-151.0, -20.75], [-151.25, -20.65], [-151.5, -20.75], [-152.03, -20.53], [-152.25, -20.0], [-152.15, -19.75], [-152.25, -19.5]]]]}, "2024-06-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-152.25, -19.5], [-152.15, -19.25], [-152.25, -19.0], [-152.15, -18.75], [-152.25, -18.5], [-152.03, -17.97], [-151.68, -17.82], [-151.53, -17.47], [-151.18, -17.32], [-151.03, -16.97], [-150.68, -16.82], [-150.53, -16.47], [-150.18, -16.32], [-150.03, -15.97], [-149.5, -15.75], [-149.25, -15.85], [-149.0, -15.75], [-148.75, -15.85], [-148.5, -15.75], [-147.97, -15.97], [-147.75, -16.5], [-147.85, -16.75], [-147.75, -17.0], [-147.97, -17.53], [-148.5, -17.75], [-148.75, -17.65], [-148.82, -17.68], [-148.97, -18.03], [-149.5, -18.25], [-149.75, -18.15], [-149.82, -18.18], [-149.96, -18.5], [-149.75, -19.0], [-149.85, -19.25], [-149.75, -19.5], [-149.85, -19.75], [-149.75, -20.0], [-149.97, -20.53], [-150.5, -20.75], [-150.75, -20.65], [-151.0, -20.75], [-151.25, -20.65], [-151.5, -20.75], [-152.03, -20.53], [-152.25, -20.0], [-152.15, -19.75], [-152.25, -19.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.6210085039826936}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.1662876336348578}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.166999226394182, 23.79265309846477, 23.93720570013386]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.064733034484618, 22.660533571612234, 22.77309544734885]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.0178282626842732, -1.334374521756225, -1.146660116464075]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.3053302961952795, -1.6210085039826936, -1.4638613749838214]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3698361644622727, -1.7402449413254109, -1.5125391602908793]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5649866258669405, -1.8693562841478808, -1.972181533381049]}}