{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:16:41.462063", "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": "2022-Jan-06_to_2022-Jan-10_151.0_-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": 2022010000348}, "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": "January 06 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 10 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 60992.60556000658}, "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": ["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": 151.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "151.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 148.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 151.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -10.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -8.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[148.75, -7.85], [149.0, -7.75], [149.25, -7.85], [149.5, -7.75], [149.75, -7.85], [150.0, -7.75], [150.53, -7.97], [150.68, -8.32], [151.03, -8.47], [151.18, -8.82], [151.25, -8.85], [151.5, -8.75], [152.03, -8.97], [152.25, -9.5], [152.15, -9.75], [152.25, -10.0], [152.03, -10.53], [151.5, -10.75], [151.25, -10.65], [151.18, -10.68], [151.03, -11.03], [150.5, -11.25], [149.97, -11.03], [149.82, -10.68], [149.75, -10.65], [149.5, -10.75], [148.97, -10.53], [148.8, -10.13], [148.5, -10.25], [147.97, -10.03], [147.75, -9.5], [147.96, -9.0], [147.75, -8.5], [147.97, -7.97], [148.5, -7.75], [148.75, -7.85]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.Asia", "N.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[148.47, -9.03], [148.25, -8.5], [148.47, -7.97], [149.0, -7.75], [149.25, -7.85], [149.5, -7.75], [150.03, -7.97], [150.18, -8.32], [150.25, -8.35], [150.5, -8.25], [151.03, -8.47], [151.18, -8.82], [151.25, -8.85], [151.5, -8.75], [152.03, -8.97], [152.25, -9.5], [152.15, -9.75], [152.25, -10.0], [152.03, -10.53], [151.5, -10.75], [151.0, -10.54], [150.5, -10.75], [149.97, -10.53], [149.75, -10.0], [149.88, -9.7], [149.75, -9.65], [149.5, -9.75], [148.97, -9.53], [148.82, -9.18], [148.47, -9.03]]]]}, "2022-01-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[147.75, -8.5], [147.97, -7.97], [148.5, -7.75], [148.75, -7.85], [149.0, -7.75], [149.25, -7.85], [149.5, -7.75], [150.03, -7.97], [150.18, -8.32], [150.25, -8.35], [150.5, -8.25], [151.03, -8.47], [151.18, -8.82], [151.25, -8.85], [151.5, -8.75], [152.03, -8.97], [152.25, -9.5], [152.15, -9.75], [152.25, -10.0], [152.03, -10.53], [151.5, -10.75], [151.25, -10.65], [151.18, -10.68], [151.03, -11.03], [150.5, -11.25], [149.97, -11.03], [149.82, -10.68], [149.75, -10.65], [149.5, -10.75], [148.97, -10.53], [148.8, -10.13], [148.5, -10.25], [147.97, -10.03], [147.75, -9.5], [147.96, -9.0], [147.75, -8.5]]]]}, "2022-01-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[147.75, -8.5], [147.97, -7.97], [148.5, -7.75], [148.75, -7.85], [149.0, -7.75], [149.25, -7.85], [149.5, -7.75], [149.75, -7.85], [150.0, -7.75], [150.53, -7.97], [150.68, -8.32], [151.03, -8.47], [151.18, -8.82], [151.25, -8.85], [151.5, -8.75], [152.03, -8.97], [152.25, -9.5], [152.15, -9.75], [152.25, -10.0], [152.03, -10.53], [151.5, -10.75], [151.25, -10.65], [151.18, -10.68], [151.03, -11.03], [150.5, -11.25], [149.97, -11.03], [149.82, -10.68], [149.75, -10.65], [149.5, -10.75], [148.97, -10.53], [148.8, -10.13], [148.5, -10.25], [147.97, -10.03], [147.75, -9.5], [147.96, -9.0], [147.75, -8.5]]]]}, "2022-01-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[147.75, -8.5], [147.97, -7.97], [148.5, -7.75], [148.75, -7.85], [149.0, -7.75], [149.25, -7.85], [149.5, -7.75], [149.75, -7.85], [150.0, -7.75], [150.53, -7.97], [150.68, -8.32], [151.03, -8.47], [151.18, -8.82], [151.25, -8.85], [151.5, -8.75], [152.03, -8.97], [152.25, -9.5], [152.15, -9.75], [152.25, -10.0], [152.03, -10.53], [151.5, -10.75], [151.25, -10.65], [151.18, -10.68], [151.03, -11.03], [150.5, -11.25], [149.97, -11.03], [149.82, -10.68], [149.75, -10.65], [149.5, -10.75], [148.97, -10.53], [148.8, -10.13], [148.5, -10.25], [147.97, -10.03], [147.75, -9.5], [147.96, -9.0], [147.75, -8.5]]]]}, "2022-01-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[148.97, -8.47], [149.32, -8.32], [149.47, -7.97], [150.0, -7.75], [150.53, -7.97], [150.68, -8.32], [151.03, -8.47], [151.25, -9.0], [151.03, -9.53], [150.5, -9.75], [150.25, -9.65], [150.0, -9.75], [149.75, -9.65], [149.5, -9.75], [149.2, -9.63], [149.03, -10.03], [148.5, -10.25], [147.97, -10.03], [147.75, -9.5], [147.97, -8.97], [148.5, -8.75], [148.8, -8.87], [148.97, -8.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.4109788269763044}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.0837748772446776}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.5082395562859, 25.612400821653978, 25.542894272165483, 25.182429517965375, 25.76142007913728]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.17175353444628, 21.160828271863295, 21.096116525740683, 20.921835257649263, 22.93738592614858]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.8450609161267203, -0.9458872862611004, -1.0518515393877976, -1.4192546646285167, -0.8232070548867568]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.0875311246705905, -1.5840315303771035, -1.788038383976641, -2.4109788269763044, -1.0141181271788469]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.707558833718867, -1.7933146106567326, -1.9957793303758318, -2.6863039465222167, -1.4982102847240717]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2433997022005263, -2.80458590689656, -3.192363523270024, -4.283399481289651, -1.8046790510839164]}}