{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:37.929906", "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": "2012-Oct-31_to_2012-Nov-04_128.5_-0.5"}, "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": 2012100001266}, "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": "October 31 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 04 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 61808.4942466615}, "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": ["Halmahera Sea", "North Pacific Ocean"]}, "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": -0.5}, "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": 128.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "128.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 127.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 129.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -0.75}, "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": {"2012-10-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[127.25, 0.0], [127.47, 0.53], [127.88, 0.7], [127.75, 1.0], [127.96, 1.5], [127.75, 2.0], [127.97, 2.53], [128.32, 2.68], [128.47, 3.03], [129.0, 3.25], [129.53, 3.03], [129.68, 2.68], [130.03, 2.53], [130.25, 2.0], [130.15, 1.75], [130.25, 1.5], [130.15, 1.25], [130.25, 1.0], [130.15, 0.75], [130.25, 0.5], [130.03, -0.03], [129.68, -0.18], [129.65, -0.25], [129.75, -0.5], [129.53, -1.03], [129.0, -1.25], [128.75, -1.15], [128.5, -1.25], [127.97, -1.03], [127.82, -0.68], [127.47, -0.53], [127.25, 0.0]]]]}, "2012-11-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[127.88, 0.7], [127.75, 1.0], [127.96, 1.5], [127.75, 2.0], [127.97, 2.53], [128.32, 2.68], [128.47, 3.03], [129.0, 3.25], [129.53, 3.03], [129.68, 2.68], [130.03, 2.53], [130.25, 2.0], [130.15, 1.75], [130.25, 1.5], [130.15, 1.25], [130.25, 1.0], [130.15, 0.75], [130.25, 0.5], [130.04, 0.0], [130.25, -0.5], [130.03, -1.03], [129.5, -1.25], [129.25, -1.15], [129.0, -1.25], [128.75, -1.15], [128.5, -1.25], [128.25, -1.15], [128.0, -1.25], [127.75, -1.15], [127.5, -1.25], [126.97, -1.03], [126.75, -0.5], [126.97, 0.03], [127.32, 0.18], [127.47, 0.53], [127.88, 0.7]]]]}, "2012-11-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[127.25, 0.5], [127.47, 1.03], [127.82, 1.18], [127.96, 1.5], [127.75, 2.0], [127.97, 2.53], [128.32, 2.68], [128.47, 3.03], [129.0, 3.25], [129.53, 3.03], [129.68, 2.68], [130.03, 2.53], [130.25, 2.0], [130.15, 1.75], [130.25, 1.5], [130.15, 1.25], [130.25, 1.0], [130.15, 0.75], [130.25, 0.5], [130.04, 0.0], [130.25, -0.5], [130.03, -1.03], [129.5, -1.25], [129.25, -1.15], [129.0, -1.25], [128.75, -1.15], [128.5, -1.25], [128.25, -1.15], [128.0, -1.25], [127.75, -1.15], [127.5, -1.25], [126.97, -1.03], [126.75, -0.5], [126.97, 0.03], [127.32, 0.18], [127.35, 0.25], [127.25, 0.5]]]]}, "2012-11-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[127.25, 0.5], [127.47, 1.03], [128.0, 1.25], [128.53, 1.03], [128.68, 0.68], [129.03, 0.53], [129.18, 0.18], [129.25, 0.15], [129.5, 0.25], [130.03, 0.03], [130.25, -0.5], [130.03, -1.03], [129.5, -1.25], [129.25, -1.15], [129.0, -1.25], [128.75, -1.15], [128.5, -1.25], [128.25, -1.15], [128.0, -1.25], [127.75, -1.15], [127.5, -1.25], [126.97, -1.03], [126.75, -0.5], [126.97, 0.03], [127.32, 0.18], [127.35, 0.25], [127.25, 0.5]]]]}, "2012-11-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[127.25, 0.5], [127.47, 1.03], [128.0, 1.25], [128.53, 1.03], [128.75, 0.5], [128.63, 0.2], [129.03, 0.03], [129.25, -0.5], [129.03, -1.03], [128.5, -1.25], [127.97, -1.03], [127.75, -0.5], [127.88, -0.2], [127.47, -0.03], [127.25, 0.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.407340240959286}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.8969809509725276}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.479915646373684, 26.072607533506925, 26.285219405812768, 26.24575809917252, 26.004682199133015]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.218651918581827, 24.71534718243919, 24.912858705181748, 25.366787545227567, 25.3311029658945]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.7966806873062957, -1.132609976486157, -0.8529910648134716, -0.7176662859139356, -0.6180648397478308]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.9198521142998288, -1.407340240959286, -1.1425731054149537, -0.7979135531250563, -0.6573297699242744]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4892763487857046, -2.100644054579583, -1.597041058559406, -1.3681566816792077, -1.2875660629318797]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6453651620734775, -2.701517316849946, -2.1416255845290357, -1.5011867639559966, -1.354612669291914]}}