{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:55:54.898137", "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-Mar-17_to_2014-Mar-19_281.0_36.0"}, "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": 2014030000748}, "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 17 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 19 2014"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 70183.63918016478}, "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": ["United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.North-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North America"]}, "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": 36.0}, "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": 281.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "281.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 279.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 282.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 34.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 38.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-03-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.75, 35.5], [-80.53, 36.03], [-80.18, 36.18], [-80.03, 36.53], [-79.68, 36.68], [-79.65, 36.75], [-79.75, 37.0], [-79.53, 37.53], [-79.18, 37.68], [-79.03, 38.03], [-78.68, 38.18], [-78.53, 38.53], [-78.0, 38.75], [-77.47, 38.53], [-77.25, 38.0], [-77.35, 37.75], [-77.25, 37.5], [-77.35, 37.25], [-77.25, 37.0], [-77.35, 36.75], [-77.25, 36.5], [-77.35, 36.25], [-77.25, 36.0], [-77.35, 35.75], [-77.25, 35.5], [-77.35, 35.25], [-77.25, 35.0], [-77.47, 34.47], [-77.82, 34.32], [-77.97, 33.97], [-78.5, 33.75], [-78.75, 33.85], [-79.0, 33.75], [-79.25, 33.85], [-79.5, 33.75], [-79.75, 33.85], [-80.0, 33.75], [-80.25, 33.85], [-80.5, 33.75], [-81.03, 33.97], [-81.25, 34.5], [-81.03, 35.03], [-80.68, 35.18], [-80.65, 35.25], [-80.75, 35.5]]]]}, "2014-03-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.75, 35.5], [-80.53, 36.03], [-80.18, 36.18], [-80.03, 36.53], [-79.68, 36.68], [-79.65, 36.75], [-79.75, 37.0], [-79.53, 37.53], [-79.18, 37.68], [-79.03, 38.03], [-78.68, 38.18], [-78.53, 38.53], [-78.0, 38.75], [-77.47, 38.53], [-77.25, 38.0], [-77.35, 37.75], [-77.25, 37.5], [-77.35, 37.25], [-77.25, 37.0], [-77.35, 36.75], [-77.25, 36.5], [-77.35, 36.25], [-77.25, 36.0], [-77.35, 35.75], [-77.25, 35.5], [-77.35, 35.25], [-77.25, 35.0], [-77.47, 34.47], [-77.82, 34.32], [-77.97, 33.97], [-78.5, 33.75], [-78.75, 33.85], [-79.0, 33.75], [-79.25, 33.85], [-79.5, 33.75], [-79.75, 33.85], [-80.0, 33.75], [-80.25, 33.85], [-80.5, 33.75], [-81.03, 33.97], [-81.25, 34.5], [-81.03, 35.03], [-80.68, 35.18], [-80.65, 35.25], [-80.75, 35.5]]]]}, "2014-03-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.75, 35.5], [-80.53, 36.03], [-80.18, 36.18], [-80.03, 36.53], [-79.68, 36.68], [-79.65, 36.75], [-79.75, 37.0], [-79.53, 37.53], [-79.18, 37.68], [-79.03, 38.03], [-78.68, 38.18], [-78.53, 38.53], [-78.0, 38.75], [-77.47, 38.53], [-77.25, 38.0], [-77.35, 37.75], [-77.25, 37.5], [-77.35, 37.25], [-77.25, 37.0], [-77.35, 36.75], [-77.25, 36.5], [-77.35, 36.25], [-77.25, 36.0], [-77.35, 35.75], [-77.25, 35.5], [-77.35, 35.25], [-77.25, 35.0], [-77.47, 34.47], [-77.82, 34.32], [-77.97, 33.97], [-78.5, 33.75], [-78.75, 33.85], [-79.0, 33.75], [-79.25, 33.85], [-79.5, 33.75], [-79.75, 33.85], [-80.0, 33.75], [-80.25, 33.85], [-80.5, 33.75], [-81.03, 33.97], [-81.25, 34.5], [-81.03, 35.03], [-80.68, 35.18], [-80.65, 35.25], [-80.75, 35.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.668905040991376}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -8.410205707650162}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [2.4558716558993297, 1.2631179670826782, 4.804152804222497]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-1.2884078330214948, -0.05995566712351774, 3.1400687909303997]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-8.630073684462223, -9.981844133151286, -6.6186993053369845]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-10.127535280073175, -10.668905040991376, -7.349520524425543]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.787638571677901, -2.1299972040790864, -1.445516927877959]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.041874812393695, -2.285556573891766, -1.6054627883370185]}}