{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:58:43.075196", "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": "2024-May-09_to_2024-May-13_166.5_-63.0"}, "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": 2024050000267}, "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": "May 09 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 13 2024"}, "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": 51559.62382185878}, "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": ["Antarctica"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Antarctica"]}, "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": ["Southern 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": -63.0}, "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": 166.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "166.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 160.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 166.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -64.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -62.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[167.25, -63.0], [167.03, -63.53], [166.68, -63.68], [166.54, -64.0], [166.75, -64.5], [166.53, -65.03], [166.0, -65.25], [165.75, -65.15], [165.5, -65.25], [165.25, -65.15], [165.0, -65.25], [164.47, -65.03], [164.25, -64.5], [164.35, -64.25], [164.32, -64.18], [164.25, -64.15], [164.0, -64.25], [163.75, -64.15], [163.5, -64.25], [163.25, -64.15], [163.0, -64.25], [162.75, -64.15], [162.5, -64.25], [162.25, -64.15], [162.0, -64.25], [161.75, -64.15], [161.5, -64.25], [161.25, -64.15], [161.0, -64.25], [160.75, -64.15], [160.5, -64.25], [159.97, -64.03], [159.75, -63.5], [159.85, -63.25], [159.75, -63.0], [159.97, -62.47], [160.5, -62.25], [160.75, -62.35], [161.0, -62.25], [161.25, -62.35], [161.5, -62.25], [161.75, -62.35], [161.82, -62.32], [161.97, -61.97], [162.5, -61.75], [162.75, -61.85], [163.0, -61.75], [163.25, -61.85], [163.5, -61.75], [163.75, -61.85], [164.0, -61.75], [164.25, -61.85], [164.5, -61.75], [164.75, -61.85], [165.0, -61.75], [165.25, -61.85], [165.5, -61.75], [165.75, -61.85], [166.0, -61.75], [166.53, -61.97], [166.68, -62.32], [167.03, -62.47], [167.25, -63.0]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Antarctica", "Southern-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-05-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[161.0, -63.75], [160.47, -63.53], [160.25, -63.0], [160.47, -62.47], [161.0, -62.25], [161.25, -62.35], [161.5, -62.25], [161.75, -62.35], [161.82, -62.32], [161.97, -61.97], [162.5, -61.75], [162.75, -61.85], [163.0, -61.75], [163.25, -61.85], [163.5, -61.75], [163.75, -61.85], [164.0, -61.75], [164.25, -61.85], [164.5, -61.75], [164.75, -61.85], [165.0, -61.75], [165.25, -61.85], [165.5, -61.75], [166.03, -61.97], [166.25, -62.5], [166.03, -63.03], [165.5, -63.25], [165.25, -63.15], [165.0, -63.25], [164.75, -63.15], [164.5, -63.25], [164.25, -63.15], [164.0, -63.25], [163.75, -63.15], [163.5, -63.25], [163.25, -63.15], [163.0, -63.25], 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-17.990277127329136, -15.739836324370629, -21.826557933260233, -19.587317362018297]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.681723598442284, -10.398723467177962, -7.791338336032348, -12.55122751639994, -9.115109170904807]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.168764271478551, -11.125079605409724, -8.664780363564603, -14.78404702894835, -12.365497237525432]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.557570216384129, -2.327012793284383, -1.6978820868705142, -2.8190524472633873, -1.903657274313375]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.690198213497531, -2.800503164229964, -1.8983278224166866, -3.7313377945925814, -2.3111985755006743]}}