{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:20:51.202333", "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": "2019-Nov-17_to_2019-Nov-28_147.0_-9.5"}, "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": 2019110000544}, "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": "November 17 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 28 2019"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 12}, "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": 69917.4854537599}, "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": ["N.Australia", "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": ["Coral 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": -9.5}, "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": 145.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 150.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -12.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -8.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-11-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[147.0, -8.75], [147.53, -8.97], [147.75, -9.5], [147.53, -10.03], [147.0, -10.25], [146.47, -10.03], [146.25, -9.5], [146.47, -8.97], [147.0, -8.75]]]]}, "2019-11-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[147.0, -8.75], [147.53, -8.97], [147.75, -9.5], [147.53, -10.03], [147.0, -10.25], [146.47, -10.03], [146.25, -9.5], [146.47, -8.97], [147.0, -8.75]]]]}, "2019-11-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[147.0, -8.75], [147.53, -8.97], [147.75, -9.5], [147.53, -10.03], [147.0, -10.25], [146.47, -10.03], [146.25, -9.5], [146.47, -8.97], [147.0, -8.75]]]]}, "2019-11-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[145.47, -10.53], [145.25, -10.0], [145.47, -9.47], [146.0, -9.25], [146.25, -9.35], [146.32, -9.32], [146.47, -8.97], [147.0, -8.75], [147.53, -8.97], [147.68, -9.32], [147.75, -9.35], [148.0, -9.25], [148.53, -9.47], [148.68, -9.82], [149.03, -9.97], [149.25, -10.5], [149.03, -11.03], [148.5, -11.25], [148.0, -11.04], [147.5, -11.25], [146.97, -11.03], [146.8, -10.63], [146.5, -10.75], [146.25, -10.65], [146.0, -10.75], [145.47, -10.53]]]]}, "2019-11-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[150.53, -9.97], [150.75, -10.5], [150.53, -11.03], [150.0, -11.25], [149.47, -11.03], [149.25, -10.5], [149.47, -9.97], [150.0, -9.75], [150.53, -9.97]]], [[[146.75, -8.85], [147.0, -8.75], [147.53, -8.97], [147.68, -9.32], [147.75, -9.35], [148.0, -9.25], [148.25, -9.35], [148.5, -9.25], [149.03, -9.47], [149.25, -10.0], [149.15, -10.25], [149.25, -10.5], [149.03, -11.03], [148.5, -11.25], [148.0, -11.04], [147.5, -11.25], [146.97, -11.03], [146.82, -10.68], [146.75, -10.65], [146.5, -10.75], [146.25, -10.65], [146.0, -10.75], [145.47, -10.53], [145.25, -10.0], [145.47, -9.47], [145.82, -9.32], [145.97, -8.97], [146.5, -8.75], [146.75, -8.85]]]]}, "2019-11-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.5, -8.75], [146.75, -8.85], [146.82, -8.82], [146.97, -8.47], [147.5, -8.25], [148.03, -8.47], [148.25, -9.0], [148.15, -9.25], [148.18, -9.32], [148.25, -9.35], [148.5, -9.25], [148.75, -9.35], [149.0, -9.25], [149.53, -9.47], [149.7, -9.87], [150.0, -9.75], [150.53, -9.97], [150.75, -10.5], [150.53, -11.03], [150.0, -11.25], [149.5, -11.04], [149.0, -11.25], [148.75, -11.15], [148.5, -11.25], [148.0, -11.04], [147.5, -11.25], [146.97, -11.03], [146.82, -10.68], [146.75, -10.65], [146.5, -10.75], [146.25, -10.65], [146.0, -10.75], [145.47, -10.53], [145.25, -10.0], [145.47, -9.47], [145.82, -9.32], [145.97, -8.97], [146.5, -8.75]]]]}, "2019-11-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.5, -8.75], [146.75, -8.85], [146.82, -8.82], [146.97, -8.47], [147.5, -8.25], [148.03, -8.47], [148.25, -9.0], [148.15, -9.25], [148.18, -9.32], [148.25, -9.35], [148.5, -9.25], [148.75, -9.35], [149.0, -9.25], [149.53, -9.47], [149.7, -9.87], [150.0, -9.75], [150.25, -9.85], [150.5, -9.75], [151.03, -9.97], [151.25, -10.5], [151.15, -10.75], [151.25, -11.0], [151.03, -11.53], [150.68, -11.68], [150.65, -11.75], [150.75, -12.0], [150.53, -12.53], [150.0, -12.75], [149.75, -12.65], [149.5, -12.75], [148.97, -12.53], [148.75, -12.0], [148.85, -11.75], [148.75, -11.5], [148.88, -11.2], [148.75, -11.15], [148.5, -11.25], [148.0, -11.04], [147.5, -11.25], [146.97, -11.03], [146.82, -10.68], [146.75, -10.65], [146.5, -10.75], [146.25, -10.65], [146.0, -10.75], [145.47, -10.53], [145.25, -10.0], [145.47, -9.47], [145.82, -9.32], [145.97, -8.97], [146.5, -8.75]]]]}, "2019-11-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.25, -9.5], [146.47, -8.97], [146.82, -8.82], [146.97, -8.47], [147.5, -8.25], [148.03, -8.47], [148.25, -9.0], [148.15, -9.25], [148.2, -9.37], [148.5, -9.25], [148.75, -9.35], [149.0, -9.25], [149.53, -9.47], [149.68, -9.82], [149.75, -9.85], [150.0, -9.75], [150.25, -9.85], [150.5, -9.75], [151.03, -9.97], [151.25, -10.5], [151.15, -10.75], [151.25, -11.0], [151.03, -11.53], [150.68, -11.68], [150.65, -11.75], [150.75, -12.0], [150.53, -12.53], [150.0, -12.75], [149.75, -12.65], [149.5, -12.75], [148.97, -12.53], [148.75, -12.0], [148.85, -11.75], [148.75, -11.5], [148.88, -11.2], [148.75, -11.15], [148.5, -11.25], [147.97, -11.03], [147.8, -10.63], [147.5, -10.75], [146.97, -10.53], [146.82, -10.18], [146.47, -10.03], [146.25, -9.5]]]]}, "2019-11-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.25, -9.5], [146.47, -8.97], [147.0, -8.75], [147.25, -8.85], [147.5, -8.75], [148.03, -8.97], [148.2, -9.37], [148.5, -9.25], [148.75, -9.35], [149.0, -9.25], [149.53, -9.47], [149.68, -9.82], [149.75, -9.85], [150.0, -9.75], [150.25, -9.85], [150.5, -9.75], [151.03, -9.97], [151.25, -10.5], [151.15, -10.75], [151.25, -11.0], [151.03, -11.53], [150.68, -11.68], [150.65, -11.75], [150.75, -12.0], [150.53, -12.53], [150.0, -12.75], [149.75, -12.65], [149.5, -12.75], [148.97, -12.53], [148.75, -12.0], [148.85, -11.75], [148.75, -11.5], [148.88, -11.2], [148.75, -11.15], [148.5, -11.25], [147.97, -11.03], [147.8, -10.63], [147.5, -10.75], [146.97, -10.53], [146.82, -10.18], [146.47, -10.03], [146.25, -9.5]]]]}, "2019-11-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.25, -9.5], [146.47, -8.97], [147.0, -8.75], [147.25, -8.85], [147.5, -8.75], [148.03, -8.97], [148.2, -9.37], [148.5, -9.25], [148.75, -9.35], [149.0, -9.25], [149.53, -9.47], [149.68, -9.82], [149.75, -9.85], [150.0, -9.75], [150.25, -9.85], [150.5, -9.75], [151.03, -9.97], [151.25, -10.5], [151.15, -10.75], [151.25, -11.0], [151.03, -11.53], [150.68, -11.68], [150.65, -11.75], [150.75, -12.0], [150.53, -12.53], [150.0, -12.75], [149.75, -12.65], [149.5, -12.75], [148.97, -12.53], [148.75, -12.0], [148.85, -11.75], [148.75, -11.5], [148.88, -11.2], [148.75, -11.15], [148.5, -11.25], [147.97, -11.03], [147.8, -10.63], [147.5, -10.75], [146.97, -10.53], [146.82, -10.18], [146.47, -10.03], [146.25, -9.5]]]]}, "2019-11-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.25, -9.5], [146.47, -8.97], [147.0, -8.75], [147.53, -8.97], [147.68, -9.32], [148.0, -9.46], [148.5, -9.25], [148.75, -9.35], [149.0, -9.25], [149.53, -9.47], [149.68, -9.82], [149.75, -9.85], [150.0, -9.75], [150.25, -9.85], [150.5, -9.75], [151.03, -9.97], [151.25, -10.5], [151.03, -11.03], [150.5, -11.25], [150.25, -11.15], [150.0, -11.25], [149.75, -11.15], [149.5, -11.25], [149.25, -11.15], [149.0, -11.25], [148.75, -11.15], [148.5, -11.25], [147.97, -11.03], [147.8, -10.63], [147.5, -10.75], [146.97, -10.53], [146.82, -10.18], [146.47, -10.03], [146.25, -9.5]]]]}, "2019-11-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[148.5, -9.25], [149.03, -9.47], [149.25, -10.0], [149.03, -10.53], [148.5, -10.75], [147.97, -10.53], [147.75, -10.0], [147.97, -9.47], [148.5, -9.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.1979929739219983}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.3524177310878944}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.39776982899383, 25.97719162871175, 26.315089349337086, 25.87665782625868, 25.46883541605831, 24.58546282364921, 24.71656832463509, 24.501561349468886, 25.07579897431924, 24.977409521040954, 24.644827944287613, 23.79460477325415]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.39776982899383, 25.97719162871175, 26.315089349337086, 25.525243108191205, 23.740627501588733, 18.336359559778828, 17.833418393202635, 17.784775346031267, 21.427415648701015, 21.319461105370294, 21.35000589086559, 23.79460477325415]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.6791415638609806, -1.09728249991349, -0.7796740309997858, -1.0302389960688256, -1.1851810390748483, -1.316185866859439, -1.4615498729397054, -1.456601089155958, -1.3015744659786783, -1.4219113495606273, -1.5139387673309936, -1.5677863623800476]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.6791415638609806, -1.09728249991349, -0.7796740309997858, -1.3110596481581638, -1.810503055483366, -1.7477818767968643, -2.1979929739219983, -2.0858287407131684, -1.8964910866471882, -1.9690912246130665, -1.9474571328024126, -1.5677863623800476]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2612152358264515, -1.9802247638791166, -1.35640514693608, -1.5707013173862838, -1.6500683591082643, -1.7212180002110946, -1.9482277996171684, -1.8019288657861732, -1.5526206430419782, -1.7075161797332052, -1.6937657978062186, -1.5409763381074284]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.2612152358264515, -1.9802247638791166, -1.35640514693608, -1.7341009874019129, -2.0764081642387806, -1.9497258274166638, -2.681753655037119, -2.147527752735987, -1.7989276455885395, -1.918327825141337, -1.9429859185172103, -1.5409763381074284]}}