{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:58:57.996118", "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": "2026-Mar-16_to_2026-Mar-20_138.5_-8.0"}, "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": 2026030000443}, "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": "March 16 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 20 2026"}, "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": 88885.58473602938}, "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", "Papua New Guinea"]}, "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": ["Arafura 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": -8.0}, "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": 138.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "138.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 137.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 142.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -9.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -4.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-03-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.5, -7.25], [139.03, -7.47], [139.25, -8.0], [139.03, -8.53], [138.5, -8.75], [137.97, -8.53], [137.75, -8.0], [137.97, -7.47], [138.5, -7.25]]]]}, "2026-03-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.97, -8.53], [137.75, -8.0], [137.97, -7.47], [138.5, -7.25], [139.03, -7.47], [139.25, -8.0], [139.03, -8.53], [138.5, -8.75], [137.97, -8.53]]], [[[138.25, -6.5], [138.47, -5.97], [139.0, -5.75], [139.53, -5.97], [139.75, -6.5], [139.53, -7.03], [139.0, -7.25], [138.47, -7.03], [138.25, -6.5]]], [[[137.25, -5.0], [137.47, -4.47], [138.0, -4.25], [138.53, -4.47], [138.75, -5.0], [138.53, -5.53], [138.0, -5.75], [137.47, -5.53], [137.25, -5.0]]]]}, "2026-03-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.75, -7.0], [137.96, -6.5], [137.75, -6.0], [137.85, -5.75], [137.82, -5.68], [137.47, -5.53], [137.25, -5.0], [137.47, -4.47], [138.0, -4.25], [138.53, -4.47], [138.68, -4.82], [139.03, -4.97], [139.18, -5.32], [139.53, -5.47], [139.68, -5.82], [139.75, -5.85], [140.0, -5.75], [140.53, -5.97], [140.68, -6.32], [140.75, -6.35], [141.0, -6.25], [141.53, -6.47], [141.75, -7.0], [141.63, -7.3], [141.75, -7.35], [142.0, -7.25], [142.53, -7.47], [142.75, -8.0], [142.65, -8.25], [142.75, -8.5], [142.65, -8.75], [142.75, -9.0], [142.53, -9.53], [142.0, -9.75], [141.75, -9.65], [141.5, -9.75], [140.97, -9.53], [140.82, -9.18], [140.47, -9.03], [140.32, -8.68], [140.25, -8.65], [140.0, -8.75], [139.75, -8.65], [139.5, -8.75], [139.25, -8.65], [139.0, -8.75], [138.75, -8.65], [138.5, -8.75], [138.25, -8.65], [138.0, -8.75], [137.47, -8.53], [137.25, -8.0], [137.47, -7.47], [137.82, -7.32], [137.85, -7.25], [137.75, -7.0]]]]}, "2026-03-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.75, -7.0], [137.96, -6.5], [137.75, -6.0], [137.85, -5.75], [137.82, -5.68], [137.47, -5.53], [137.25, -5.0], [137.47, -4.47], [138.0, -4.25], [138.53, -4.47], [138.68, -4.82], [139.03, -4.97], [139.18, -5.32], [139.53, -5.47], [139.68, -5.82], [139.75, -5.85], [140.0, -5.75], [140.53, -5.97], [140.68, -6.32], [140.75, -6.35], [141.0, -6.25], [141.53, -6.47], [141.75, -7.0], [141.63, -7.3], [141.75, -7.35], [142.0, -7.25], [142.53, -7.47], [142.75, -8.0], [142.65, -8.25], [142.75, -8.5], [142.65, -8.75], [142.75, -9.0], [142.53, -9.53], [142.0, -9.75], [141.75, -9.65], [141.5, -9.75], [140.97, -9.53], [140.82, -9.18], [140.47, -9.03], [140.32, -8.68], [140.25, -8.65], [140.0, -8.75], [139.75, -8.65], [139.5, -8.75], [139.25, -8.65], [139.0, -8.75], [138.75, -8.65], [138.5, -8.75], [138.25, -8.65], [138.0, -8.75], [137.47, -8.53], [137.25, -8.0], [137.47, -7.47], [137.82, -7.32], [137.85, -7.25], [137.75, -7.0]]]]}, "2026-03-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.75, -7.0], [137.96, -6.5], [137.75, -6.0], [137.85, -5.75], [137.75, -5.5], [137.97, -4.97], [138.5, -4.75], [139.03, -4.97], [139.18, -5.32], [139.53, -5.47], [139.68, -5.82], [139.75, -5.85], [140.0, -5.75], [140.53, -5.97], [140.68, -6.32], [140.75, -6.35], [141.0, -6.25], [141.53, -6.47], [141.75, -7.0], [141.63, -7.3], [141.75, -7.35], [142.0, -7.25], [142.53, -7.47], [142.75, -8.0], [142.65, -8.25], [142.75, -8.5], [142.65, -8.75], [142.75, -9.0], [142.53, -9.53], [142.0, -9.75], [141.75, -9.65], [141.5, -9.75], [140.97, -9.53], [140.82, -9.18], [140.47, -9.03], [140.32, -8.68], [140.25, -8.65], [140.0, -8.75], [139.75, -8.65], [139.5, -8.75], [139.25, -8.65], [139.0, -8.75], [138.75, -8.65], [138.5, -8.75], [138.25, -8.65], [138.0, -8.75], [137.47, -8.53], [137.25, -8.0], [137.47, -7.47], [137.82, -7.32], [137.85, -7.25], [137.75, -7.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.988411242717973}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.3451953244256338}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.36356124877932, 25.263624657524986, 25.169831804297473, 25.433034164604123, 25.42659694126678]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.36356124877932, 25.171936289469443, 24.45182825724288, 25.055053965250693, 24.868081665039085]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.9329638579041557, -1.2029750497659013, -1.5199907273518416, -1.2601578308667565, -1.2821922143844944]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.9329638579041557, -1.3426873020211474, -1.988411242717973, -1.693461862957804, -1.6020252331476286]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2646741433199948, -1.465637518701356, -1.9707334490159996, -1.6480584609013553, -1.682031055131391]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.2646741433199948, -1.499814701909921, -2.8379476262229804, -2.219845186692665, -1.9753833251030053]}}