{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:20.384579", "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": "2010-Dec-20_to_2010-Dec-25_115.0_6.0"}, "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": 2010120000951}, "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": "December 20 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 25 2010"}, "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": 95126.04093432764}, "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": ["Philippines"]}, "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": 6.0}, "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": 115.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "115.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 113.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 117.25}, "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": 9.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-12-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[116.47, 9.03], [117.0, 9.25], [117.53, 9.03], [117.75, 8.5], [117.65, 8.25], [117.75, 8.0], [117.53, 7.47], [117.0, 7.25], [116.47, 7.47], [116.25, 8.0], [116.35, 8.25], [116.25, 8.5], [116.47, 9.03]]]]}, "2010-12-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[115.47, 9.53], [116.0, 9.75], [116.53, 9.53], [116.68, 9.18], [116.75, 9.15], [117.0, 9.25], [117.53, 9.03], [117.75, 8.5], [117.65, 8.25], [117.75, 8.0], [117.53, 7.47], [117.0, 7.25], [116.47, 7.47], [116.32, 7.82], [116.25, 7.85], [116.0, 7.75], [115.47, 7.97], [115.25, 8.5], [115.35, 8.75], [115.25, 9.0], [115.47, 9.53]]]]}, "2010-12-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.25, 5.5], [113.46, 6.0], [113.25, 6.5], [113.47, 7.03], [114.0, 7.25], [114.5, 7.04], [114.82, 7.18], [114.97, 7.53], [115.32, 7.68], [115.46, 8.0], [115.25, 8.5], [115.35, 8.75], [115.25, 9.0], [115.47, 9.53], [116.0, 9.75], [116.53, 9.53], [116.68, 9.18], [116.75, 9.15], [117.0, 9.25], [117.53, 9.03], [117.75, 8.5], [117.65, 8.25], [117.75, 8.0], [117.53, 7.47], [117.18, 7.32], [117.03, 6.97], [116.68, 6.82], [116.65, 6.75], [116.75, 6.5], [116.53, 5.97], [116.18, 5.82], [116.03, 5.47], [115.68, 5.32], [115.53, 4.97], [115.18, 4.82], [115.03, 4.47], [114.5, 4.25], [114.25, 4.35], [114.18, 4.32], [114.03, 3.97], [113.5, 3.75], [112.97, 3.97], [112.75, 4.5], [112.97, 5.03], [113.32, 5.18], [113.35, 5.25], [113.25, 5.5]]]]}, "2010-12-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.25, 5.5], [113.35, 5.75], [113.25, 6.0], [113.35, 6.25], [113.25, 6.5], [113.47, 7.03], [113.82, 7.18], [113.85, 7.25], [113.82, 7.32], [113.47, 7.47], [113.25, 8.0], [113.47, 8.53], [114.0, 8.75], [114.53, 8.53], [114.68, 8.18], [114.75, 8.15], [115.0, 8.25], [115.25, 8.15], [115.38, 8.2], [115.25, 8.5], [115.35, 8.75], [115.25, 9.0], [115.47, 9.53], [116.0, 9.75], [116.53, 9.53], [116.68, 9.18], [117.03, 9.03], [117.25, 8.5], [117.15, 8.25], [117.25, 8.0], [117.15, 7.75], [117.25, 7.5], [117.03, 6.97], [116.68, 6.82], [116.65, 6.75], [116.75, 6.5], [116.53, 5.97], [116.18, 5.82], [116.03, 5.47], [115.68, 5.32], [115.53, 4.97], [115.18, 4.82], [115.03, 4.47], [114.5, 4.25], [114.25, 4.35], [114.18, 4.32], [114.03, 3.97], [113.5, 3.75], [112.97, 3.97], [112.75, 4.5], [112.97, 5.03], [113.32, 5.18], [113.35, 5.25], [113.25, 5.5]]]]}, "2010-12-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.25, 5.5], [113.35, 5.75], [113.25, 6.0], [113.35, 6.25], [113.25, 6.5], [113.47, 7.03], [113.82, 7.18], [113.85, 7.25], [113.82, 7.32], [113.47, 7.47], [113.25, 8.0], [113.47, 8.53], [114.0, 8.75], [114.53, 8.53], [114.68, 8.18], [114.75, 8.15], [115.0, 8.25], [115.25, 8.15], [115.38, 8.2], [115.25, 8.5], [115.35, 8.75], [115.25, 9.0], [115.47, 9.53], [116.0, 9.75], [116.53, 9.53], [116.68, 9.18], [117.03, 9.03], [117.25, 8.5], [117.15, 8.25], [117.25, 8.0], [117.15, 7.75], [117.25, 7.5], [117.03, 6.97], [116.68, 6.82], [116.65, 6.75], [116.75, 6.5], [116.53, 5.97], [116.18, 5.82], [116.03, 5.47], [115.68, 5.32], 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anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.9633205719478731}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.096268415000623, 26.012721093340986, 25.940617509818765, 25.77943312675052, 25.692082776140126, 25.81872020360902]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.03039133507508, 25.86927635530833, 25.662138122355543, 25.437396834899403, 25.39184389232986, 25.657233454497714]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.7480978559235893, -0.884133884578614, -0.8903940735267868, -0.9966174053614799, -1.051523184913298, -0.8953341977870688]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.7864000749222555, 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