{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:01.105831", "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": "2018-Sep-18_to_2018-Sep-21_105.5_-3.5"}, "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": 2018090000705}, "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": "September 18 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 21 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 61667.32609335966}, "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": ["Indonesia"]}, "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": ["Java 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": -3.5}, "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": 105.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "105.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 104.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 108.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -5.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -2.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-09-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[106.25, -3.0], [106.47, -2.47], [107.0, -2.25], [107.25, -2.35], [107.5, -2.25], [108.03, -2.47], [108.25, -3.0], [108.04, -3.5], [108.25, -4.0], [108.03, -4.53], [107.5, -4.75], [106.97, -4.53], [106.75, -4.0], [106.88, -3.7], [106.47, -3.53], [106.25, -3.0]]]]}, "2018-09-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[104.25, -4.0], [104.35, -3.75], [104.25, -3.5], [104.47, -2.97], [104.82, -2.82], [104.97, -2.47], [105.5, -2.25], [105.75, -2.35], [106.0, -2.25], [106.25, -2.35], [106.5, -2.25], [106.75, -2.35], [107.0, -2.25], [107.25, -2.35], [107.5, -2.25], [107.75, -2.35], [108.0, -2.25], [108.53, -2.47], [108.75, -3.0], [108.53, -3.53], [108.13, -3.7], [108.25, -4.0], [108.03, -4.53], [107.68, -4.68], [107.65, -4.75], [107.75, -5.0], [107.53, -5.53], [107.0, -5.75], [106.47, -5.53], [106.32, -5.18], [106.25, -5.15], [106.18, -5.18], [106.03, -5.53], [105.5, -5.75], [105.25, -5.65], [105.0, -5.75], [104.75, -5.65], [104.5, -5.75], [103.97, -5.53], [103.75, -5.0], [103.97, -4.47], [104.32, -4.32], [104.35, -4.25], [104.25, -4.0]], [[106.25, -3.65], [106.18, -3.68], [106.15, -3.75], [106.18, -3.82], [106.25, -3.85], [106.5, -3.75], [106.25, -3.65]], [[106.75, -3.85], [106.82, -3.82], [106.88, -3.7], [106.75, -3.65], [106.5, -3.75], [106.75, -3.85]]]]}, "2018-09-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[104.25, -4.0], [104.35, -3.75], [104.25, -3.5], [104.47, -2.97], [104.82, -2.82], [104.97, -2.47], [105.5, -2.25], [105.75, -2.35], [106.0, -2.25], [106.25, -2.35], [106.5, -2.25], [106.75, -2.35], [107.0, -2.25], [107.25, -2.35], [107.5, -2.25], [107.75, -2.35], [108.0, -2.25], [108.53, -2.47], [108.75, -3.0], [108.53, -3.53], [108.13, -3.7], [108.25, -4.0], [108.03, -4.53], [107.68, -4.68], [107.65, -4.75], [107.75, -5.0], [107.53, -5.53], [107.0, -5.75], [106.47, -5.53], [106.32, -5.18], [106.25, -5.15], [106.18, -5.18], [106.03, -5.53], [105.5, -5.75], [105.25, -5.65], [105.0, -5.75], [104.75, -5.65], [104.5, -5.75], [103.97, -5.53], [103.75, -5.0], [103.97, -4.47], [104.32, -4.32], [104.35, -4.25], [104.25, -4.0]], [[106.25, -3.65], [106.18, -3.68], [106.15, -3.75], [106.18, -3.82], [106.25, -3.85], [106.5, -3.75], [106.25, -3.65]], [[106.75, -3.85], [106.82, -3.82], [106.88, -3.7], [106.75, -3.65], [106.5, -3.75], [106.75, -3.85]]]]}, "2018-09-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[104.35, -3.75], [104.25, -3.5], [104.47, -2.97], [104.82, -2.82], [104.97, -2.47], [105.5, -2.25], [105.75, -2.35], [106.0, -2.25], [106.25, -2.35], [106.5, -2.25], [107.03, -2.47], [107.25, -3.0], [107.03, -3.53], [106.5, -3.75], [106.75, -3.85], [107.0, -3.75], [107.53, -3.97], [107.75, -4.5], [107.65, -4.75], [107.75, -5.0], [107.53, -5.53], [107.0, -5.75], [106.47, -5.53], [106.32, -5.18], [106.25, -5.15], [106.18, -5.18], [106.03, -5.53], [105.5, -5.75], [105.25, -5.65], [105.0, -5.75], [104.75, -5.65], [104.5, -5.75], [103.97, -5.53], [103.75, -5.0], [103.97, -4.47], [104.32, -4.32], [104.35, -4.25], [104.25, -4.0], [104.35, -3.75]], [[106.25, -3.65], [106.18, -3.68], [106.15, -3.75], [106.18, -3.82], [106.25, -3.85], [106.5, -3.75], [106.25, -3.65]]], [[[108.53, -2.47], [108.75, -3.0], [108.53, -3.53], [108.0, -3.75], [107.47, -3.53], [107.25, -3.0], [107.47, -2.47], [108.0, -2.25], [108.53, -2.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.2114850185694763}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.39977501719378}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.758899991212616, 25.750352807156332, 25.97333439934988, 25.204415030877612]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.550619591438874, 22.258908754699462, 22.469863572057932, 21.40123113959993]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.6695427509370688, -1.33942574497824, -1.1564607093625567, -1.8858908054117445]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.7735985762213318, -2.102250777703375, -1.960355126537138, -3.2114850185694763]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4067639215435586, -2.0751265927002502, -1.8146785342829284, -2.5572597798391286]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6153785945838421, -3.2642341713418106, -2.5913228997679703, -3.9905864569012235]}}