{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:49.872052", "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": "2012-Mar-18_to_2012-Mar-21_296.5_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": 2012030001100}, "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 18 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 21 2012"}, "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": 83233.83265009765}, "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", "Venezuela"]}, "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": 296.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "296.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 294.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 298.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 2.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 6.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-03-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.53, 4.03], [-64.18, 4.18], [-64.03, 4.53], [-63.68, 4.68], [-63.53, 5.03], [-63.0, 5.25], [-62.75, 5.15], [-62.5, 5.25], [-61.97, 5.03], [-61.82, 4.68], [-61.47, 4.53], [-61.25, 4.0], [-61.35, 3.75], [-61.25, 3.5], [-61.35, 3.25], [-61.25, 3.0], [-61.35, 2.75], [-61.25, 2.5], [-61.47, 1.97], [-62.0, 1.75], [-62.25, 1.85], [-62.5, 1.75], [-63.03, 1.97], [-63.2, 2.38], [-63.5, 2.25], [-63.75, 2.35], [-64.0, 2.25], [-64.53, 2.47], [-64.75, 3.0], [-64.65, 3.25], [-64.75, 3.5], [-64.53, 4.03]]]]}, "2012-03-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.5, 6.75], [-63.97, 6.53], [-63.82, 6.18], [-63.75, 6.15], [-63.5, 6.25], [-63.25, 6.15], [-63.0, 6.25], [-62.47, 6.03], [-62.32, 5.68], [-61.97, 5.53], [-61.75, 5.0], [-61.85, 4.75], [-61.82, 4.68], [-61.47, 4.53], [-61.25, 4.0], [-61.35, 3.75], [-61.25, 3.5], [-61.35, 3.25], [-61.25, 3.0], [-61.35, 2.75], [-61.25, 2.5], [-61.47, 1.97], [-62.0, 1.75], [-62.25, 1.85], [-62.5, 1.75], [-63.03, 1.97], [-63.2, 2.38], [-63.5, 2.25], [-63.75, 2.35], [-64.0, 2.25], [-64.53, 2.47], [-64.75, 3.0], [-64.65, 3.25], [-64.68, 3.32], [-65.03, 3.47], [-65.25, 4.0], [-65.03, 4.53], [-64.68, 4.68], [-64.62, 4.8], [-64.75, 4.85], [-65.0, 4.75], [-65.53, 4.97], [-65.75, 5.5], [-65.53, 6.03], [-65.18, 6.18], [-65.03, 6.53], [-64.5, 6.75]]]]}, "2012-03-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.5, 6.75], [-63.97, 6.53], [-63.82, 6.18], [-63.75, 6.15], [-63.5, 6.25], [-63.25, 6.15], [-63.0, 6.25], [-62.47, 6.03], [-62.32, 5.68], [-61.97, 5.53], [-61.75, 5.0], [-61.85, 4.75], [-61.82, 4.68], [-61.47, 4.53], [-61.25, 4.0], [-61.35, 3.75], [-61.25, 3.5], [-61.35, 3.25], [-61.25, 3.0], [-61.35, 2.75], [-61.25, 2.5], [-61.47, 1.97], [-62.0, 1.75], [-62.25, 1.85], [-62.5, 1.75], [-63.03, 1.97], [-63.2, 2.38], [-63.5, 2.25], [-63.75, 2.35], [-64.0, 2.25], [-64.53, 2.47], [-64.75, 3.0], [-64.65, 3.25], [-64.68, 3.32], [-65.03, 3.47], [-65.25, 4.0], [-65.03, 4.53], [-64.68, 4.68], [-64.62, 4.8], [-64.75, 4.85], [-65.0, 4.75], [-65.53, 4.97], [-65.75, 5.5], [-65.53, 6.03], [-65.18, 6.18], [-65.03, 6.53], [-64.5, 6.75]]]]}, "2012-03-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.5, 6.75], [-63.97, 6.53], [-63.82, 6.18], [-63.75, 6.15], [-63.5, 6.25], [-63.25, 6.15], [-63.0, 6.25], [-62.47, 6.03], [-62.32, 5.68], [-61.97, 5.53], [-61.75, 5.0], [-61.97, 4.47], [-62.5, 4.25], [-62.93, 4.43], [-62.75, 4.0], [-62.97, 3.47], [-63.32, 3.32], [-63.47, 2.97], [-64.0, 2.75], [-64.53, 2.97], [-64.68, 3.32], [-65.03, 3.47], [-65.25, 4.0], [-65.03, 4.53], [-64.68, 4.68], [-64.62, 4.8], [-64.75, 4.85], [-65.0, 4.75], [-65.53, 4.97], [-65.75, 5.5], [-65.53, 6.03], [-65.18, 6.18], [-65.03, 6.53], [-64.5, 6.75]], [[-63.37, 4.8], [-63.32, 4.68], [-63.07, 4.57], [-63.18, 4.82], [-63.25, 4.85], [-63.37, 4.8]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.855529099477451}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9207431396974508}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.058983442903752, 22.564256110626502, 22.66503714089066, 22.631316140243086]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.118458324642745, 19.579541581638864, 20.039530130741298, 20.21410673723375]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.761464720225527, -2.076613558801474, -1.995135819591867, -1.628295594536188]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.4187331172855124, -2.855529099477451, -2.789659624277988, -2.0942451075316626]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.277350747923204, -1.600407498641488, -1.5262010838147158, -1.3610144742897863]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.415705561010241, -1.9623563949522806, -2.31671770214895, -1.6338643148752974]}}