{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:42.738115", "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": "2015-Apr-10_to_2015-Apr-15_101.0_19.5"}, "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": 2015040000473}, "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": "April 10 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 15 2015"}, "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": 204853.1595248621}, "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": ["Laos", "Thailand", "Vietnam"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia", "S.Asia", "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": []}, "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": 19.5}, "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": 101.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "101.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 98.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 105.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 15.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 21.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-04-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[102.47, 21.53], [103.0, 21.75], [103.25, 21.65], [103.32, 21.68], [103.47, 22.03], [104.0, 22.25], [104.53, 22.03], [104.75, 21.5], [104.54, 21.0], [104.68, 20.68], [105.03, 20.53], [105.25, 20.0], [105.04, 19.5], [105.2, 19.13], [105.5, 19.25], [106.03, 19.03], [106.25, 18.5], [106.03, 17.97], [105.5, 17.75], [104.97, 17.97], [104.8, 18.38], [104.5, 18.25], [103.97, 18.47], [103.75, 19.0], [103.96, 19.5], [103.82, 19.82], [103.75, 19.85], [103.5, 19.75], [103.25, 19.85], [103.0, 19.75], [102.47, 19.97], [102.25, 20.5], [102.35, 20.75], [102.25, 21.0], [102.47, 21.53]]]]}, "2015-04-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[99.75, 20.0], [99.97, 20.53], [100.5, 20.75], [101.03, 20.53], [101.18, 20.18], [101.25, 20.15], [101.32, 20.18], [101.47, 20.53], [102.0, 20.75], [102.25, 20.65], [102.32, 20.68], [102.35, 20.75], [102.25, 21.0], [102.47, 21.53], [103.0, 21.75], [103.25, 21.65], [103.32, 21.68], [103.47, 22.03], [104.0, 22.25], [104.53, 22.03], [104.75, 21.5], [104.54, 21.0], [104.68, 20.68], [105.03, 20.53], [105.25, 20.0], [105.04, 19.5], [105.2, 19.13], [105.5, 19.25], [106.03, 19.03], [106.25, 18.5], [106.15, 18.25], [106.25, 18.0], [106.03, 17.47], [105.5, 17.25], [105.25, 17.35], [105.0, 17.25], [104.75, 17.35], [104.5, 17.25], [103.97, 17.47], [103.75, 18.0], [103.85, 18.25], [103.82, 18.32], [103.5, 18.46], [103.18, 18.32], [103.03, 17.97], [102.68, 17.82], [102.65, 17.75], [102.75, 17.5], [102.53, 16.97], [102.18, 16.82], [102.03, 16.47], [101.5, 16.25], [101.25, 16.35], [101.0, 16.25], [100.47, 16.47], [100.25, 17.0], [100.35, 17.25], [100.25, 17.5], [100.35, 17.75], [100.25, 18.0], [100.35, 18.25], [100.25, 18.5], [100.46, 19.0], [100.32, 19.32], [99.97, 19.47], [99.75, 20.0]]]]}, "2015-04-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.85, 18.25], [97.75, 18.5], [97.85, 18.75], [97.75, 19.0], [97.97, 19.53], [98.5, 19.75], [98.8, 19.63], [98.85, 19.75], [98.75, 20.0], [98.97, 20.53], [99.5, 20.75], [99.75, 20.65], [100.0, 20.75], [100.25, 20.65], [100.5, 20.75], [100.75, 20.65], [100.82, 20.68], [100.97, 21.03], [101.5, 21.25], [102.0, 21.04], [102.32, 21.18], [102.47, 21.53], [103.0, 21.75], [103.25, 21.65], [103.32, 21.68], [103.47, 22.03], [104.0, 22.25], [104.53, 22.03], [104.75, 21.5], [104.54, 21.0], [104.68, 20.68], [105.03, 20.53], [105.25, 20.0], [105.04, 19.5], [105.2, 19.13], [105.5, 19.25], [106.03, 19.03], [106.25, 18.5], [106.15, 18.25], [106.25, 18.0], [106.03, 17.47], [105.5, 17.25], [105.25, 17.35], [105.0, 17.25], [104.75, 17.35], [104.5, 17.25], [103.97, 17.47], [103.75, 18.0], [103.85, 18.25], [103.82, 18.32], [103.5, 18.46], [103.18, 18.32], [103.03, 17.97], [102.68, 17.82], [102.65, 17.75], [102.75, 17.5], [102.53, 16.97], [102.18, 16.82], [102.03, 16.47], [101.5, 16.25], [101.25, 16.35], [101.0, 16.25], [100.7, 16.38], [100.53, 15.97], [100.18, 15.82], [100.03, 15.47], [99.5, 15.25], [99.25, 15.35], [99.0, 15.25], [98.47, 15.47], [98.25, 16.0], [98.35, 16.25], [98.25, 16.5], [98.38, 16.8], [97.97, 16.97], [97.75, 17.5], [97.85, 17.75], [97.75, 18.0], [97.85, 18.25]], [[100.32, 17.32], [100.25, 17.35], [100.18, 17.32], [100.15, 17.25], [100.18, 17.18], [100.3, 17.13], [100.35, 17.25], [100.32, 17.32]]]]}, "2015-04-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.85, 18.25], [97.75, 18.5], [97.85, 18.75], [97.75, 19.0], [97.97, 19.53], [98.5, 19.75], [98.8, 19.63], [98.85, 19.75], [98.75, 20.0], [98.97, 20.53], [99.5, 20.75], [99.75, 20.65], [100.0, 20.75], [100.25, 20.65], [100.5, 20.75], [100.75, 20.65], [100.82, 20.68], [100.97, 21.03], [101.5, 21.25], [102.0, 21.04], [102.32, 21.18], [102.47, 21.53], [103.0, 21.75], [103.53, 21.53], [103.68, 21.18], [104.03, 21.03], [104.18, 20.68], [104.53, 20.53], [104.75, 20.0], [104.54, 19.5], [104.68, 19.18], [105.03, 19.03], [105.18, 18.68], [105.25, 18.65], [105.5, 18.75], [106.03, 18.53], [106.25, 18.0], [106.03, 17.47], [105.5, 17.25], [105.25, 17.35], [105.0, 17.25], [104.75, 17.35], [104.5, 17.25], [103.97, 17.47], [103.75, 18.0], [103.85, 18.25], [103.82, 18.32], [103.5, 18.46], [103.18, 18.32], [103.04, 18.0], [103.25, 17.5], [103.03, 16.97], [102.5, 16.75], [102.25, 16.85], [102.18, 16.82], [102.03, 16.47], [101.5, 16.25], [101.25, 16.35], [101.0, 16.25], [100.7, 16.38], [100.53, 15.97], [100.18, 15.82], [100.15, 15.75], [100.25, 15.5], [100.03, 14.97], [99.5, 14.75], [99.25, 14.85], [99.0, 14.75], [98.47, 14.97], [98.25, 15.5], [98.35, 15.75], [98.25, 16.0], [98.35, 16.25], [98.25, 16.5], [98.38, 16.8], [97.97, 16.97], [97.75, 17.5], [97.85, 17.75], [97.75, 18.0], [97.85, 18.25]], [[100.32, 17.32], [100.25, 17.35], [100.18, 17.32], [100.15, 17.25], [100.18, 17.18], [100.3, 17.13], [100.35, 17.25], [100.32, 17.32]]]]}, "2015-04-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.85, 18.25], [97.75, 18.5], [97.85, 18.75], [97.75, 19.0], [97.97, 19.53], [98.5, 19.75], [98.8, 19.63], [98.85, 19.75], [98.75, 20.0], [98.97, 20.53], [99.5, 20.75], [99.75, 20.65], [100.0, 20.75], [100.5, 20.54], [100.82, 20.68], [100.97, 21.03], [101.5, 21.25], [102.0, 21.04], [102.5, 21.25], [102.75, 21.15], [103.0, 21.25], [103.25, 21.15], [103.5, 21.25], [104.03, 21.03], [104.18, 20.68], [104.53, 20.53], [104.75, 20.0], [104.54, 19.5], [104.68, 19.18], [105.03, 19.03], [105.18, 18.68], [105.53, 18.53], [105.75, 18.0], [105.53, 17.47], [105.0, 17.25], [104.75, 17.35], [104.5, 17.25], [103.97, 17.47], [103.75, 18.0], [103.85, 18.25], [103.82, 18.32], [103.5, 18.46], [103.18, 18.32], [103.04, 18.0], [103.25, 17.5], [103.03, 16.97], [102.5, 16.75], [102.25, 16.85], [102.18, 16.82], [102.03, 16.47], [101.5, 16.25], [101.25, 16.35], [101.0, 16.25], [100.7, 16.38], [100.53, 15.97], [100.18, 15.82], [100.15, 15.75], [100.25, 15.5], [100.03, 14.97], [99.5, 14.75], [99.25, 14.85], [99.0, 14.75], [98.47, 14.97], [98.25, 15.5], [98.35, 15.75], [98.25, 16.0], [98.35, 16.25], [98.25, 16.5], [98.38, 16.8], [97.97, 16.97], [97.75, 17.5], [97.85, 17.75], [97.75, 18.0], [97.85, 18.25]], [[100.32, 17.32], [100.25, 17.35], [100.18, 17.32], [100.15, 17.25], [100.18, 17.18], [100.3, 17.13], [100.35, 17.25], [100.32, 17.32]]]]}, "2015-04-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[98.35, 16.25], [98.25, 16.5], [98.47, 17.03], [98.82, 17.18], [98.97, 17.53], [99.38, 17.7], [99.25, 18.0], [99.47, 18.53], [99.82, 18.68], [99.97, 19.03], [100.38, 19.2], [100.25, 19.5], [100.47, 20.03], [101.0, 20.25], [101.5, 20.04], [102.0, 20.25], [102.53, 20.03], [102.75, 19.5], [102.53, 18.97], [102.0, 18.75], [101.5, 18.96], [101.13, 18.8], [101.25, 18.5], [101.13, 18.2], [101.5, 18.04], [102.0, 18.25], [102.25, 18.15], [102.5, 18.25], [103.03, 18.03], [103.25, 17.5], [103.03, 16.97], [102.5, 16.75], [102.25, 16.85], [102.0, 16.75], [101.7, 16.88], [101.53, 16.47], [101.0, 16.25], [100.47, 16.47], [100.25, 17.0], [100.04, 16.5], [100.25, 16.0], [100.15, 15.75], [100.25, 15.5], [100.03, 14.97], [99.5, 14.75], [99.25, 14.85], [99.0, 14.75], [98.47, 14.97], [98.25, 15.5], [98.35, 15.75], [98.25, 16.0], [98.35, 16.25]], [[100.35, 17.25], [100.3, 17.38], [100.13, 17.3], [100.25, 17.0], [100.35, 17.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.365967849910305}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.633315321951238}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.791123593072996, 21.10363593003467, 21.741011114619823, 22.978246765909716, 22.779400912638778, 24.747479310170093]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.421904873046174, 16.82153350940058, 16.531620534753984, 17.387015008223216, 17.707167635213295, 21.62754471761758]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.542686033466869, -3.5585425552594736, -4.104976893766681, -3.3000221803180914, -3.5660890813473727, -2.8056362072139223]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.476515403462486, -5.586266028261264, -6.365967849910305, -4.738818285110199, -5.003665221110225, -3.7954683437116614]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.698279095726958, -1.655424392094302, -2.0744404371461136, -1.7562221779991343, -1.8877759079574417, -1.527914607112224]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0353170180750855, -2.081494167653948, -3.3612393981990745, -2.3495548538285855, -3.0689617340114754, -1.704152415555802]}}