{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:29.511177", "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": "2019-Apr-07_to_2019-Apr-10_306.0_4.0"}, "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": 2019040000273}, "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": "April 07 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 10 2019"}, "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": 55541.394541877875}, "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": ["Brazil", "French Guiana", "Suriname"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["South 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": 4.0}, "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": 306.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "306.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 304.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 307.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 0.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 4.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-04-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-55.53, 4.03], [-55.18, 4.18], [-55.03, 4.53], [-54.68, 4.68], [-54.53, 5.03], [-54.0, 5.25], [-53.75, 5.15], [-53.5, 5.25], [-52.97, 5.03], [-52.82, 4.68], [-52.47, 4.53], [-52.25, 4.0], [-52.47, 3.47], [-53.0, 3.25], [-53.25, 3.35], [-53.32, 3.32], [-53.35, 3.25], [-53.25, 3.0], [-53.47, 2.47], [-53.82, 2.32], [-53.97, 1.97], [-54.5, 1.75], [-55.03, 1.97], [-55.18, 2.32], [-55.53, 2.47], [-55.75, 3.0], [-55.65, 3.25], [-55.75, 3.5], [-55.53, 4.03]]]]}, "2019-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-55.75, 3.5], [-55.53, 4.03], [-55.18, 4.18], [-55.15, 4.25], [-55.25, 4.5], [-55.03, 5.03], [-54.5, 5.25], [-54.25, 5.15], [-54.0, 5.25], [-53.75, 5.15], [-53.5, 5.25], [-52.97, 5.03], [-52.82, 4.68], [-52.47, 4.53], [-52.25, 4.0], [-52.47, 3.47], [-53.0, 3.25], [-53.25, 3.35], [-53.32, 3.32], [-53.35, 3.25], [-53.25, 3.0], [-53.46, 2.5], [-53.25, 2.0], [-53.47, 1.47], [-53.82, 1.32], [-53.85, 1.25], [-53.75, 1.0], [-53.97, 0.47], [-54.5, 0.25], [-55.03, 0.47], [-55.25, 1.0], [-55.15, 1.25], [-55.25, 1.5], [-55.07, 1.93], [-55.5, 1.75], [-56.03, 1.97], [-56.25, 2.5], [-56.03, 3.03], [-55.68, 3.18], [-55.65, 3.25], [-55.75, 3.5]]]]}, "2019-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-55.75, 3.5], [-55.53, 4.03], [-55.18, 4.18], [-55.15, 4.25], [-55.25, 4.5], [-55.03, 5.03], [-54.5, 5.25], [-54.25, 5.15], [-54.0, 5.25], [-53.75, 5.15], [-53.5, 5.25], [-52.97, 5.03], [-52.82, 4.68], [-52.47, 4.53], [-52.25, 4.0], [-52.47, 3.47], [-53.0, 3.25], [-53.25, 3.35], [-53.32, 3.32], [-53.35, 3.25], [-53.25, 3.0], [-53.46, 2.5], [-53.25, 2.0], [-53.47, 1.47], [-53.82, 1.32], [-53.85, 1.25], [-53.75, 1.0], [-53.97, 0.47], [-54.5, 0.25], [-55.03, 0.47], [-55.25, 1.0], [-55.15, 1.25], [-55.25, 1.5], [-55.07, 1.93], [-55.5, 1.75], [-56.03, 1.97], [-56.25, 2.5], [-56.03, 3.03], [-55.68, 3.18], [-55.65, 3.25], [-55.75, 3.5]]]]}, "2019-04-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-55.18, 3.68], [-55.15, 3.75], [-55.25, 4.0], [-55.15, 4.25], [-55.25, 4.5], [-55.03, 5.03], [-54.5, 5.25], [-53.97, 5.03], [-53.82, 4.68], [-53.47, 4.53], [-53.25, 4.0], [-53.47, 3.47], [-53.82, 3.32], [-53.85, 3.25], [-53.75, 3.0], [-53.87, 2.7], [-53.47, 2.53], [-53.25, 2.0], [-53.47, 1.47], [-53.82, 1.32], [-53.85, 1.25], [-53.75, 1.0], [-53.97, 0.47], [-54.5, 0.25], [-55.03, 0.47], [-55.25, 1.0], [-55.15, 1.25], [-55.25, 1.5], [-55.07, 1.93], [-55.5, 1.75], [-56.03, 1.97], [-56.25, 2.5], [-56.03, 3.03], [-55.68, 3.18], [-55.53, 3.53], [-55.18, 3.68]], [[-54.68, 2.18], [-54.62, 2.3], [-54.75, 2.35], [-54.82, 2.32], [-54.93, 2.07], [-54.68, 2.18]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.5304624433291565}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6007430143601145}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.01528998513544, 23.866064850733437, 23.629425021340865, 23.96620945159998]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.150831963301414, 22.626222059999918, 22.796063654733928, 22.966058397885206]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5748147582490246, -1.5633605160507216, -1.7981078290909491, -1.3464815777459365]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.9847185628987631, -1.9987791405725375, -2.5304624433291565, -1.7027134563480217]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.815726814779524, -1.8045993054663323, -2.034528223805967, -1.5938949258796764]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2348370585377646, -2.385222310750873, -2.7822939288192816, -1.9699137697931302]}}