{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-05-20 10:52:20.686799", "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-24_to_2026-Mar-28_139.5_-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": 2026030000691}, "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 24 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 28 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": 64228.72861030232}, "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": 139.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "139.5\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": -7.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-03-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.97, -6.97], [138.5, -6.75], [138.75, -6.85], [139.0, -6.75], [139.5, -6.96], [140.0, -6.75], [140.25, -6.85], [140.5, -6.75], [141.03, -6.97], [141.25, -7.5], [141.15, -7.75], [141.18, -7.82], [141.25, -7.85], [141.5, -7.75], [141.75, -7.85], [142.0, -7.75], [142.53, -7.97], [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], [140.75, -9.65], [140.5, -9.75], [139.97, -9.53], [139.82, -9.18], [139.75, -9.15], [139.5, -9.25], [139.25, -9.15], [139.0, -9.25], [138.75, -9.15], [138.5, -9.25], [138.25, -9.15], [138.0, -9.25], [137.47, -9.03], [137.25, -8.5], [137.47, -7.97], [137.88, -7.8], [137.75, -7.5], [137.97, -6.97]]]]}, "2026-03-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.97, -6.97], [138.5, -6.75], [138.75, -6.85], [139.0, -6.75], [139.5, -6.96], [140.0, -6.75], [140.25, -6.85], [140.5, -6.75], [141.03, -6.97], [141.25, -7.5], [141.15, -7.75], [141.18, -7.82], [141.25, -7.85], [141.5, -7.75], [141.75, -7.85], [142.0, -7.75], [142.53, -7.97], [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], [140.75, -9.65], [140.5, -9.75], [139.97, -9.53], [139.82, -9.18], [139.75, -9.15], [139.5, -9.25], [139.25, -9.15], [139.0, -9.25], [138.75, -9.15], [138.5, -9.25], [138.25, -9.15], [138.0, -9.25], [137.47, -9.03], [137.25, -8.5], [137.47, -7.97], [137.88, -7.8], [137.75, -7.5], [137.97, -6.97]]]]}, "2026-03-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.97, -6.97], [138.5, -6.75], [138.75, -6.85], [139.0, -6.75], [139.5, -6.96], [140.0, -6.75], [140.25, -6.85], [140.5, -6.75], [141.03, -6.97], [141.25, -7.5], [141.15, -7.75], [141.18, -7.82], [141.25, -7.85], [141.5, -7.75], [141.75, -7.85], [142.0, -7.75], [142.53, -7.97], [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], [140.75, -9.65], [140.5, -9.75], [139.97, -9.53], [139.82, -9.18], [139.75, -9.15], [139.5, -9.25], [139.25, -9.15], [139.0, -9.25], [138.75, -9.15], [138.5, -9.25], [138.25, -9.15], [138.0, -9.25], [137.47, -9.03], [137.25, -8.5], [137.47, -7.97], [137.88, -7.8], [137.75, -7.5], [137.97, -6.97]]]]}, "2026-03-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.25, -7.5], [138.47, -6.97], [139.0, -6.75], [139.53, -6.97], [139.68, -7.32], [140.03, -7.47], [140.25, -8.0], [140.03, -8.53], [139.5, -8.75], [138.97, -8.53], [138.82, -8.18], [138.47, -8.03], [138.25, -7.5]]]]}, "2026-03-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[139.5, -7.25], [140.03, -7.47], [140.25, -8.0], [140.03, -8.53], [139.5, -8.75], [138.97, -8.53], [138.75, -8.0], [138.97, -7.47], [139.5, -7.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.566462411814257}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.2404852612934292}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.57522202749101, 25.389438520159047, 25.87576755342036, 26.06261723836269, 26.05371754964193]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.835491434733115, 24.256567891438806, 25.218343353271507, 25.93045578002932, 26.05371754964193]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.28722212261922, -1.4807198697449735, -1.0079610072474452, -0.8679299446013999, -0.8422043643191159]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.0781491453402623, -2.566462411814257, -1.441449127223052, -0.9370168034134281, -0.8422043643191159]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.0261676310147587, -2.3274739107319795, -1.5901430870719475, -1.3073028863329017, -1.2798406856225566]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.3235261345621097, -4.045008587542942, -2.2334817350346303, -1.438282153310957, -1.2798406856225566]}}