{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:03.895722", "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-Jan-06_to_2015-Jan-09_140.0_-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": 2015010000396}, "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": "January 06 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 09 2015"}, "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": 61227.33099962982}, "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": []}, "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": 140.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "140.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 138.75}, "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": -6.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.47, -6.97], [139.0, -6.75], [139.25, -6.85], [139.5, -6.75], [139.75, -6.85], [139.82, -6.82], [139.97, -6.47], [140.5, -6.25], [140.75, -6.35], [141.0, -6.25], [141.53, -6.47], [141.68, -6.82], [142.03, -6.97], [142.18, -7.32], [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], [141.25, -9.65], [141.0, -9.75], [140.47, -9.53], [140.25, -9.0], [140.35, -8.75], [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], [138.47, -8.53], [138.25, -8.0], [138.35, -7.75], [138.25, -7.5], [138.47, -6.97]]]]}, "2015-01-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.47, -6.97], [139.0, -6.75], [139.25, -6.85], [139.32, -6.82], [139.47, -6.47], [140.0, -6.25], [140.25, -6.35], [140.5, -6.25], [140.75, -6.35], [141.0, -6.25], [141.53, -6.47], [141.68, -6.82], [142.03, -6.97], [142.18, -7.32], [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], [141.25, -9.65], [141.0, -9.75], [140.47, -9.53], [140.25, -9.0], [140.35, -8.75], [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], [138.47, -8.53], [138.25, -8.0], [138.35, -7.75], [138.25, -7.5], [138.47, -6.97]]]]}, "2015-01-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.47, -6.97], [139.0, -6.75], [139.25, -6.85], [139.32, -6.82], [139.47, -6.47], [140.0, -6.25], [140.25, -6.35], [140.5, -6.25], [140.75, -6.35], [141.0, -6.25], [141.53, -6.47], [141.68, -6.82], [142.03, -6.97], [142.18, -7.32], [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], [141.25, -9.65], [141.0, -9.75], [140.47, -9.53], [140.25, -9.0], [140.35, -8.75], [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], [138.47, -8.53], [138.25, -8.0], [138.35, -7.75], [138.25, -7.5], [138.47, -6.97]]]]}, "2015-01-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.25, -7.5], [138.47, -6.97], [139.0, -6.75], [139.25, -6.85], [139.32, -6.82], [139.47, -6.47], [140.0, -6.25], [140.25, -6.35], [140.5, -6.25], [140.75, -6.35], [141.0, -6.25], [141.53, -6.47], [141.68, -6.82], [142.03, -6.97], [142.25, -7.5], [142.03, -8.03], [141.63, -8.2], [141.75, -8.5], [141.53, -9.03], [141.0, -9.25], [140.47, -9.03], [140.32, -8.68], [140.25, -8.65], [140.0, -8.75], [139.75, -8.65], [139.5, -8.75], [138.97, -8.53], [138.82, -8.18], [138.47, -8.03], [138.25, -7.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.303713537672593}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.4998091456092955}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.4785666803661, 25.70933190928548, 25.303923739980235, 25.675480859377387]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.916525107238442, 25.099145646256034, 24.88851251718262, 25.063860556858856]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5314767372530882, -1.3093641989527982, -1.7440785406667971, -1.3707188987437462]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.962594222287862, -1.7947352499887188, -2.303713537672593, -1.817509929813923]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6581539930460831, -1.4390646767569442, -1.9321312154884869, -1.5120653776982496]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.051380454701718, -2.0375736278295697, -2.4795656577363627, -1.8982359736133207]}}