{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:17.419733", "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": "2012-Jan-04_to_2012-Jan-11_152.0_-8.0"}, "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": 2012010000309}, "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 04 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 11 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 64393.61154973566}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Equatorial.Pacific-Ocean", "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": ["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": -8.0}, "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": 152.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "152.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 150.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 153.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -8.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -5.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-01-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[152.0, -7.25], [152.53, -7.47], [152.75, -8.0], [152.53, -8.53], [152.0, -8.75], [151.47, -8.53], [151.25, -8.0], [151.47, -7.47], [152.0, -7.25]]]]}, "2012-01-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[149.75, -8.0], [149.97, -7.47], [150.32, -7.32], [150.47, -6.97], [151.0, -6.75], [151.25, -6.85], [151.32, -6.82], [151.47, -6.47], [151.82, -6.32], [151.97, -5.97], [152.5, -5.75], [153.03, -5.97], [153.18, -6.32], [153.53, -6.47], [153.75, -7.0], [153.53, -7.53], [153.18, -7.68], [153.03, -8.03], [152.68, -8.18], [152.65, -8.25], [152.75, -8.5], [152.53, -9.03], [152.0, -9.25], [151.75, -9.15], [151.5, -9.25], [151.25, -9.15], [151.0, -9.25], [150.47, -9.03], [150.32, -8.68], [149.97, -8.53], [149.75, -8.0]]]]}, "2012-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[149.75, -8.0], [149.97, -7.47], [150.32, -7.32], [150.47, -6.97], [150.88, -6.8], [150.75, -6.5], [150.97, -5.97], [151.32, -5.82], [151.35, -5.75], [151.25, -5.5], [151.47, -4.97], [152.0, -4.75], [152.53, -4.97], [152.68, -5.32], [153.03, -5.47], [153.25, -6.0], [153.15, -6.25], [153.18, -6.32], [153.53, -6.47], [153.75, -7.0], [153.53, -7.53], [153.18, -7.68], [153.03, -8.03], [152.68, -8.18], [152.65, -8.25], [152.75, -8.5], [152.53, -9.03], [152.0, -9.25], [151.75, -9.15], [151.5, -9.25], [151.25, -9.15], [151.0, -9.25], [150.47, -9.03], [150.32, -8.68], [149.97, -8.53], [149.75, -8.0]]]]}, "2012-01-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[149.75, -8.0], [149.97, -7.47], [150.32, -7.32], [150.47, -6.97], [150.88, -6.8], [150.75, -6.5], [150.97, -5.97], [151.32, -5.82], [151.35, -5.75], [151.25, -5.5], [151.47, -4.97], [152.0, -4.75], [152.53, -4.97], [152.68, -5.32], [153.03, -5.47], [153.25, -6.0], [153.15, -6.25], [153.18, -6.32], [153.53, -6.47], [153.75, -7.0], [153.53, -7.53], [153.18, -7.68], [153.03, -8.03], [152.68, -8.18], [152.65, -8.25], [152.75, -8.5], [152.53, -9.03], [152.0, -9.25], [151.75, -9.15], [151.5, -9.25], [151.25, -9.15], [151.0, -9.25], [150.47, -9.03], [150.32, -8.68], [149.97, -8.53], [149.75, -8.0]]]]}, "2012-01-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[150.97, -4.97], [151.5, -4.75], [151.75, -4.85], [152.0, -4.75], [152.53, -4.97], [152.68, -5.32], [153.03, -5.47], [153.25, -6.0], [153.03, -6.53], [152.68, -6.68], [152.53, -7.03], [152.0, -7.25], [151.75, -7.15], [151.5, -7.25], [150.97, -7.03], [150.75, -6.5], [150.96, -6.0], [150.75, -5.5], [150.97, -4.97]]]]}, "2012-01-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[151.5, -4.75], [152.03, -4.97], [152.25, -5.5], [152.03, -6.03], [151.5, -6.25], [150.97, -6.03], [150.75, -5.5], [150.97, -4.97], [151.5, -4.75]]]]}, "2012-01-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[151.5, -4.75], [152.03, -4.97], [152.25, -5.5], [152.03, -6.03], [151.5, -6.25], [150.97, -6.03], [150.75, -5.5], [150.97, -4.97], [151.5, -4.75]]]]}, "2012-01-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[151.5, -4.75], [152.03, -4.97], [152.25, -5.5], [152.03, -6.03], [151.5, -6.25], [150.97, -6.03], [150.75, -5.5], [150.97, -4.97], [151.5, -4.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.4135940709704755}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.9089057852931004}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.816924775163955, 26.73114105993261, 26.48017451211649, 26.608616420698183, 25.700699452893218, 22.16213232646993, 22.19484532361372, 22.188836813934188]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.816924775163955, 26.471101662500416, 25.411667883570658, 25.252976466813664, 22.222350945702033, 22.16213232646993, 22.19484532361372, 22.188836813934188]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.7020664159817329, -0.8118228470231353, -1.027349994689405, -0.9066162451667281, -0.9033445631265428, -0.7334860335232065, -0.6904975497382111, -0.6760911635794287]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.7020664159817329, -1.0057552285761062, -1.4135940709704755, -1.0675056172510153, -0.9905785340830562, -0.7334860335232065, -0.6904975497382111, -0.6760911635794287]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.1587051223458957, -1.417270764000912, -1.7974478929305362, -1.5912195298694616, -1.6276789426773979, -1.5852989834823126, -1.4257001731785273, -1.3380574157156115]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.1587051223458957, -1.7734121265818306, -2.554746903172951, -1.8893118386214636, -1.7639739987934928, -1.5852989834823126, -1.4257001731785273, -1.3380574157156115]}}