{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:08:39.725025", "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": "2017-Aug-12_to_2017-Aug-17_113.5_5.5"}, "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": 2017080000400}, "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": "August 12 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 17 2017"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 153394.81404392145}, "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": ["Brunei Darussalam", "Malaysia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": ["South China 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": 5.5}, "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": 113.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "113.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 111.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 116.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 4.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 10.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-08-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[110.75, 6.5], [110.97, 7.03], [111.32, 7.18], [111.35, 7.25], [111.25, 7.5], [111.47, 8.03], [112.0, 8.25], [112.53, 8.03], [112.68, 7.68], [112.75, 7.65], [113.0, 7.75], [113.53, 7.53], [113.75, 7.0], [113.54, 6.5], [113.68, 6.18], [113.75, 6.15], [113.82, 6.18], [113.85, 6.25], [113.75, 6.5], [113.97, 7.03], [114.5, 7.25], [115.03, 7.03], [115.25, 6.5], [115.15, 6.25], [115.18, 6.18], [115.53, 6.03], [115.75, 5.5], [115.53, 4.97], [115.18, 4.82], [115.03, 4.47], [114.68, 4.32], [114.53, 3.97], [114.0, 3.75], [113.47, 3.97], [113.25, 4.5], [113.35, 4.75], [113.32, 4.82], [112.97, 4.97], [112.82, 5.32], [112.75, 5.35], [112.5, 5.25], [112.25, 5.35], [112.0, 5.25], [111.47, 5.47], [111.32, 5.82], [110.97, 5.97], [110.75, 6.5]]]]}, "2017-08-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[110.97, 10.03], [111.5, 10.25], [111.75, 10.15], [111.82, 10.18], [111.97, 10.53], [112.5, 10.75], [113.03, 10.53], [113.25, 10.0], [113.15, 9.75], [113.25, 9.5], [113.15, 9.25], [113.25, 9.0], [113.15, 8.75], [113.18, 8.68], [113.53, 8.53], [113.75, 8.0], [113.63, 7.7], [113.75, 7.65], [114.0, 7.75], [114.25, 7.65], [114.5, 7.75], [115.03, 7.53], [115.25, 7.0], [115.15, 6.75], [115.25, 6.5], [115.15, 6.25], [115.18, 6.18], [115.53, 6.03], [115.75, 5.5], [115.53, 4.97], [115.18, 4.82], [115.03, 4.47], [114.68, 4.32], [114.53, 3.97], [114.0, 3.75], [113.47, 3.97], [113.25, 4.5], [113.35, 4.75], [113.32, 4.82], [112.97, 4.97], [112.82, 5.32], [112.75, 5.35], [112.5, 5.25], [112.25, 5.35], [112.0, 5.25], [111.47, 5.47], [111.32, 5.82], [110.97, 5.97], [110.75, 6.5], [110.97, 7.03], [111.32, 7.18], [111.35, 7.25], [111.25, 7.5], [111.46, 8.0], [111.32, 8.32], [110.97, 8.47], [110.75, 9.0], [110.85, 9.25], [110.75, 9.5], [110.97, 10.03]]]]}, "2017-08-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[110.97, 10.03], [111.5, 10.25], [111.75, 10.15], [111.82, 10.18], [111.97, 10.53], [112.5, 10.75], [113.03, 10.53], [113.25, 10.0], [113.15, 9.75], [113.25, 9.5], [113.15, 9.25], [113.25, 9.0], [113.15, 8.75], [113.18, 8.68], [113.53, 8.53], [113.75, 8.0], [113.63, 7.7], [113.75, 7.65], [114.0, 7.75], [114.25, 7.65], [114.5, 7.75], [114.75, 7.65], [114.82, 7.68], [114.97, 8.03], [115.5, 8.25], [115.75, 8.15], [116.0, 8.25], [116.53, 8.03], [116.68, 7.68], [117.03, 7.53], [117.25, 7.0], [117.03, 6.47], [116.68, 6.32], [116.65, 6.25], [116.75, 6.0], [116.53, 5.47], [116.0, 5.25], [115.75, 5.35], [115.68, 5.32], [115.65, 5.25], [115.75, 5.0], [115.53, 4.47], [115.0, 4.25], [114.75, 4.35], [114.68, 4.32], [114.53, 3.97], [114.0, 3.75], [113.47, 3.97], [113.25, 4.5], [113.35, 4.75], [113.32, 4.82], [112.97, 4.97], [112.82, 5.32], [112.75, 5.35], [112.5, 5.25], [112.25, 5.35], [112.0, 5.25], [111.47, 5.47], [111.32, 5.82], [110.97, 5.97], [110.75, 6.5], [110.97, 7.03], [111.32, 7.18], [111.35, 7.25], [111.25, 7.5], [111.46, 8.0], [111.32, 8.32], [110.97, 8.47], [110.75, 9.0], [110.85, 9.25], [110.75, 9.5], [110.97, 10.03]]]]}, "2017-08-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[110.97, 10.03], [111.5, 10.25], [111.75, 10.15], [111.82, 10.18], [111.97, 10.53], [112.5, 10.75], [113.03, 10.53], [113.25, 10.0], [113.15, 9.75], [113.25, 9.5], [113.15, 9.25], [113.25, 9.0], [113.15, 8.75], [113.18, 8.68], [113.53, 8.53], [113.75, 8.0], [113.63, 7.7], [113.75, 7.65], [114.0, 7.75], [114.25, 7.65], [114.5, 7.75], [114.75, 7.65], [114.82, 7.68], [114.97, 8.03], [115.5, 8.25], [115.75, 8.15], [116.0, 8.25], [116.53, 8.03], [116.68, 7.68], [117.03, 7.53], [117.25, 7.0], [117.03, 6.47], [116.68, 6.32], [116.65, 6.25], [116.75, 6.0], [116.53, 5.47], [116.0, 5.25], [115.75, 5.35], [115.68, 5.32], [115.65, 5.25], [115.75, 5.0], [115.53, 4.47], [115.0, 4.25], [114.47, 4.47], [114.32, 4.82], [114.25, 4.85], [114.0, 4.75], [113.75, 4.85], [113.5, 4.75], [112.97, 4.97], [112.75, 5.5], [112.85, 5.75], [112.75, 6.0], [112.85, 6.25], [112.82, 6.32], [112.47, 6.47], [112.25, 7.0], [112.38, 7.3], [111.97, 7.47], [111.82, 7.82], [111.47, 7.97], [111.32, 8.32], [110.97, 8.47], [110.75, 9.0], [110.85, 9.25], [110.75, 9.5], [110.97, 10.03]]]]}, "2017-08-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[112.97, 6.47], [112.75, 7.0], [112.97, 7.53], [113.5, 7.75], [113.75, 7.65], [114.0, 7.75], [114.25, 7.65], [114.5, 7.75], [114.75, 7.65], [114.82, 7.68], [114.97, 8.03], [115.5, 8.25], [115.75, 8.15], [116.0, 8.25], [116.53, 8.03], [116.68, 7.68], [117.03, 7.53], [117.25, 7.0], [117.03, 6.47], [116.68, 6.32], [116.65, 6.25], [116.75, 6.0], [116.53, 5.47], [116.0, 5.25], [115.75, 5.35], [115.68, 5.32], [115.65, 5.25], [115.75, 5.0], [115.53, 4.47], [115.0, 4.25], [114.47, 4.47], [114.32, 4.82], [114.25, 4.85], [114.0, 4.75], [113.75, 4.85], [113.5, 4.75], [112.97, 4.97], [112.75, 5.5], [112.97, 6.03], [113.32, 6.18], [113.35, 6.25], [113.32, 6.32], [112.97, 6.47]]], [[[113.03, 10.53], [113.25, 10.0], [113.15, 9.75], [113.25, 9.5], [113.03, 8.97], [112.5, 8.75], [112.25, 8.85], [112.0, 8.75], [111.47, 8.97], [111.25, 9.5], [111.47, 10.03], [111.82, 10.18], [111.97, 10.53], [112.5, 10.75], [113.03, 10.53]]]]}, "2017-08-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.47, 5.47], [113.25, 6.0], [113.47, 6.53], [114.0, 6.75], [114.53, 6.53], [114.75, 6.0], [114.57, 5.57], [115.0, 5.75], [115.43, 5.57], [115.25, 6.0], [115.47, 6.53], [116.0, 6.75], [116.53, 6.53], [116.75, 6.0], [116.53, 5.47], [116.0, 5.25], [115.57, 5.43], [115.75, 5.0], [115.53, 4.47], [115.0, 4.25], [114.47, 4.47], [114.25, 5.0], [114.43, 5.43], [114.0, 5.25], [113.47, 5.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.8617119681525196}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.2290733445707422}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.57642327814375, 26.454775651213765, 26.38681084068162, 26.414408537829956, 26.253504028595103, 26.2476354609816]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.145760372503503, 25.974490148098994, 25.858471000349766, 25.907799421210996, 25.757136793679308, 26.110954628178717]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.1111952284000466, -1.1898898892805811, -1.2504746472348336, -1.1967746860921469, -1.361090287461393, -1.3231728392086286]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.5879014067837147, -1.483051417380068, -1.760356206056656, -1.7110027114895274, -1.8617119681525196, -1.5987687362807037]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6048634818770617, -1.8307089348488532, -1.7661257991162094, -1.6952952819242864, -1.7512638277706885, -1.5387678344238365]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.969660394020884, -2.1334228664160717, -2.406931258905932, -2.1540699514637995, -2.12925068290355, -1.6423530128934123]}}