{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:55:30.370566", "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": "2014-Jan-21_to_2014-Jan-24_168.0_-44.0"}, "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": 2014010000890}, "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 21 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 24 2014"}, "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": 75029.15854981307}, "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": ["New Zealand"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["New-Zealand"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Oceania"]}, "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": ["Tasman 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": -44.0}, "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": 168.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "168.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 166.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 172.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -45.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -40.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-01-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[169.0, -42.75], [169.53, -42.97], [169.75, -43.5], [169.53, -44.03], [169.0, -44.25], [168.7, -44.12], [168.53, -44.53], [168.0, -44.75], [167.47, -44.53], [167.25, -44.0], [167.47, -43.47], [168.0, -43.25], [168.3, -43.37], [168.47, -42.97], [169.0, -42.75]]]]}, "2014-01-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[167.32, -43.82], [167.47, -43.47], [167.82, -43.32], [167.85, -43.25], [167.75, -43.0], [167.97, -42.47], [168.32, -42.32], [168.47, -41.97], [168.82, -41.82], [168.97, -41.47], [169.32, -41.32], [169.47, -40.97], [169.82, -40.82], [169.97, -40.47], [170.5, -40.25], [171.0, -40.46], [171.5, -40.25], [171.75, -40.35], [172.0, -40.25], [172.53, -40.47], [172.75, -41.0], [172.65, -41.25], [172.75, -41.5], [172.53, -42.03], [172.18, -42.18], [172.15, -42.25], [172.25, -42.5], [172.03, -43.03], [171.5, -43.25], [171.25, -43.15], [171.18, -43.18], [171.03, -43.53], [170.5, -43.75], [170.25, -43.65], [170.18, -43.68], [170.03, -44.03], [169.68, -44.18], [169.53, -44.53], [169.0, -44.75], [168.75, -44.65], [168.68, -44.68], [168.53, -45.03], [168.0, -45.25], [167.75, -45.15], [167.68, -45.18], [167.53, -45.53], [167.0, -45.75], [166.47, -45.53], [166.25, -45.0], [166.47, -44.47], [166.82, -44.32], [166.97, -43.97], [167.32, -43.82]]]]}, "2014-01-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[167.32, -43.82], [167.47, -43.47], [167.82, -43.32], [167.85, -43.25], [167.75, -43.0], [167.97, -42.47], [168.32, -42.32], [168.47, -41.97], [168.82, -41.82], [168.97, -41.47], [169.32, -41.32], [169.47, -40.97], [169.82, -40.82], [169.97, -40.47], [170.5, -40.25], [171.0, -40.46], [171.5, -40.25], [171.75, -40.35], [172.0, -40.25], [172.53, -40.47], [172.75, -41.0], [172.65, -41.25], [172.75, -41.5], [172.53, -42.03], [172.18, -42.18], [172.15, -42.25], [172.25, -42.5], [172.03, -43.03], [171.5, -43.25], [171.25, -43.15], [171.18, -43.18], [171.03, -43.53], [170.5, -43.75], [170.25, -43.65], [170.18, -43.68], [170.03, -44.03], [169.68, -44.18], [169.53, -44.53], [169.0, -44.75], [168.75, -44.65], [168.68, -44.68], [168.53, -45.03], [168.0, -45.25], [167.75, -45.15], [167.68, -45.18], [167.53, -45.53], [167.0, -45.75], [166.47, -45.53], [166.25, -45.0], [166.47, -44.47], [166.82, -44.32], [166.97, -43.97], [167.32, -43.82]]]]}, "2014-01-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[167.32, -43.82], [167.47, -43.47], [167.82, -43.32], [167.85, -43.25], [167.75, -43.0], [167.97, -42.47], [168.32, -42.32], [168.47, -41.97], [168.82, -41.82], [168.97, -41.47], [169.32, -41.32], [169.47, -40.97], [169.82, -40.82], [169.97, -40.47], [170.5, -40.25], [171.0, -40.46], [171.5, -40.25], [171.75, -40.35], [172.0, -40.25], [172.53, -40.47], [172.75, -41.0], [172.65, -41.25], [172.75, -41.5], [172.53, -42.03], [172.18, -42.18], [172.15, -42.25], [172.25, -42.5], [172.03, -43.03], [171.5, -43.25], [171.25, -43.15], [171.18, -43.18], [171.03, -43.53], [170.5, -43.75], [170.25, -43.65], [170.18, -43.68], [170.03, -44.03], [169.68, -44.18], [169.53, -44.53], [169.0, -44.75], [168.75, -44.65], [168.68, -44.68], [168.53, -45.03], [168.0, -45.25], [167.75, -45.15], [167.68, -45.18], [167.53, -45.53], [167.0, -45.75], [166.47, -45.53], [166.25, -45.0], [166.47, -44.47], [166.82, -44.32], [166.97, -43.97], [167.32, -43.82]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.037611369552735}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.74559996978013}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.475045697841495, 12.944734943524793, 13.236206459978007, 13.57878375993181]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.209530958297648, 7.2828501712720595, 8.080933605785106, 9.227789366154923]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.0850346483049975, -2.969041205272192, -2.7789067783930173, -2.5288861875827635]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.165014174466478, -5.037611369552735, -4.660402940892766, -3.5499596325549305]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3824905243085153, -1.8893852272421328, -1.7688618542270746, -1.621179685490844]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4440280411047073, -2.568778776782244, -2.3565839317514277, -1.9107926931492456]}}