{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-05-20 10:52:20.698007", "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-29_139.5_-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": 2026030000696}, "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 29 2026"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 111058.79019553657}, "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": ["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": -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": 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": 135.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 141.25}, "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": -2.25}, "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": [[[[135.47, -4.53], [135.25, -4.0], [135.47, -3.47], [136.0, -3.25], [136.25, -3.35], [136.5, -3.25], [136.75, -3.35], [137.0, -3.25], [137.53, -3.47], [137.75, -4.0], [137.53, -4.53], [137.0, -4.75], [136.75, -4.65], [136.5, -4.75], [136.25, -4.65], [136.0, -4.75], [135.47, -4.53]]]]}, "2026-03-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[135.47, -4.53], [135.25, -4.0], [135.47, -3.47], [136.0, -3.25], [136.25, -3.35], [136.5, -3.25], [136.75, -3.35], [137.0, -3.25], [137.53, -3.47], [137.75, -4.0], [137.53, -4.53], [137.0, -4.75], [136.75, -4.65], [136.5, -4.75], [136.25, -4.65], [136.0, -4.75], [135.47, -4.53]]]]}, "2026-03-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[135.47, -4.53], [135.25, -4.0], [135.47, -3.47], [136.0, -3.25], [136.25, -3.35], [136.32, -3.32], [136.35, -3.25], [136.25, -3.0], [136.47, -2.47], [136.82, -2.32], [136.97, -1.97], [137.5, -1.75], [137.75, -1.85], [138.0, -1.75], [138.25, -1.85], [138.5, -1.75], [138.75, -1.85], [139.0, -1.75], [139.25, -1.85], [139.5, -1.75], 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recorded over entire duration", "value": -2.532142449673586}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5291433025509964}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.359769863552515, 15.526261901855491, 21.363565022458374, 21.666720609311653, 22.213026488061075, 24.602240922715907]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.295777893066429, 12.610897318522177, 11.094645436604821, 10.239456431071005, 11.573818461100302, 22.68509953816732]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.127715597220951, -0.9824346287682033, -1.5339235305685899, -1.6671124663829429, -1.5581601274837302, -0.986269989739346]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.204883210743219, -1.0956766481062346, -2.464225011445933, -2.516395201102455, -2.532142449673586, -1.279867768804138]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.647952925866224, -1.4931919808590062, -2.0103350222689493, -2.174723089128574, -2.0383918833295405, -1.3892678175791875]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.760865276275971, -1.6922944299110954, -2.8459765236332286, -3.1914098866419356, -2.930765369155128, -1.6484849972926054]}}