{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:18:29.012032", "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": "2020-Jan-10_to_2020-Jan-14_288.0_-5.0"}, "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": 2020010000295}, "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 10 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 14 2020"}, "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": 73952.25097798769}, "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", "Peru"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America", "N.W.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": -5.0}, "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": 288.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "288.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 286.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 289.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -5.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -3.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-01-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.03, -3.47], [-73.5, -3.25], [-73.25, -3.35], [-73.0, -3.25], [-72.47, -3.47], [-72.25, -4.0], [-72.35, -4.25], [-72.25, -4.5], [-72.35, -4.75], [-72.32, -4.82], [-72.25, -4.85], [-72.0, -4.75], [-71.47, -4.97], [-71.25, -5.5], [-71.47, -6.03], [-72.0, -6.25], [-72.25, -6.15], [-72.5, -6.25], [-73.03, -6.03], [-73.18, -5.68], [-73.53, -5.53], [-73.68, -5.18], [-74.03, -5.03], [-74.25, -4.5], [-74.15, -4.25], [-74.25, -4.0], [-74.03, -3.47]]]]}, "2020-01-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.03, -3.47], [-73.68, -3.32], [-73.53, -2.97], [-73.0, -2.75], [-72.75, -2.85], [-72.5, -2.75], [-72.25, -2.85], [-72.0, -2.75], [-71.75, -2.85], [-71.5, -2.75], [-70.97, -2.97], [-70.82, -3.32], [-70.47, -3.47], [-70.25, -4.0], [-70.35, -4.25], [-70.25, -4.5], [-70.35, -4.75], [-70.32, -4.82], [-69.97, -4.97], [-69.75, -5.5], [-69.97, -6.03], [-70.5, -6.25], [-70.75, -6.15], [-71.0, -6.25], [-71.5, -6.04], [-72.0, -6.25], [-72.25, -6.15], [-72.5, -6.25], [-73.03, -6.03], [-73.18, -5.68], [-73.53, -5.53], [-73.68, -5.18], [-74.03, -5.03], [-74.25, -4.5], [-74.15, -4.25], [-74.25, -4.0], [-74.03, -3.47]]]]}, "2020-01-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.03, -3.47], [-73.68, -3.32], [-73.53, -2.97], [-73.0, -2.75], [-72.75, -2.85], [-72.5, -2.75], [-72.25, -2.85], [-72.0, -2.75], [-71.75, -2.85], [-71.5, -2.75], [-70.97, -2.97], [-70.82, -3.32], [-70.47, -3.47], [-70.25, -4.0], [-70.35, -4.25], [-70.25, -4.5], [-70.35, -4.75], [-70.32, -4.82], [-69.97, -4.97], [-69.75, -5.5], [-69.97, -6.03], [-70.5, -6.25], [-70.75, -6.15], [-71.0, -6.25], [-71.5, -6.04], [-72.0, -6.25], [-72.25, -6.15], [-72.5, -6.25], [-73.03, -6.03], [-73.18, -5.68], [-73.53, -5.53], [-73.68, -5.18], [-74.03, -5.03], [-74.25, -4.5], [-74.15, -4.25], [-74.25, -4.0], [-74.03, -3.47]]]]}, "2020-01-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.12, -4.2], [-73.53, -4.03], [-73.75, -3.5], [-73.53, -2.97], [-73.0, -2.75], [-72.75, -2.85], [-72.5, -2.75], [-72.25, -2.85], [-72.0, -2.75], [-71.75, -2.85], [-71.5, -2.75], [-70.97, -2.97], [-70.82, -3.32], [-70.47, -3.47], [-70.25, -4.0], [-70.35, -4.25], [-70.25, -4.5], [-70.35, -4.75], [-70.32, -4.82], [-69.97, -4.97], [-69.75, -5.5], [-69.97, -6.03], [-70.5, -6.25], [-70.75, -6.15], [-71.0, -6.25], [-71.53, -6.03], [-71.68, -5.68], [-71.75, -5.65], [-72.0, -5.75], [-72.25, -5.65], [-72.5, -5.75], [-73.03, -5.53], [-73.25, -5.0], [-73.15, -4.75], [-73.25, -4.5], [-73.12, -4.2]]]]}, "2020-01-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.75, -3.5], [-72.53, -2.97], [-72.0, -2.75], [-71.47, -2.97], [-71.32, -3.32], [-71.25, -3.35], [-71.0, -3.25], [-70.47, -3.47], [-70.25, -4.0], [-70.35, -4.25], [-70.25, -4.5], [-70.35, -4.75], [-70.32, -4.82], [-69.97, -4.97], [-69.75, -5.5], [-69.97, -6.03], [-70.5, -6.25], [-70.75, -6.15], [-71.0, -6.25], [-71.53, -6.03], [-71.68, -5.68], [-71.75, -5.65], [-72.0, -5.75], [-72.25, -5.65], [-72.5, -5.75], [-73.03, -5.53], [-73.25, -5.0], [-73.03, -4.47], [-72.68, -4.32], [-72.54, -4.0], [-72.75, -3.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.163989649478424}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6140167399602807}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.308818416513645, 23.72701305483963, 24.050203400125895, 24.234485835699957, 24.078091687011977]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.165584351752955, 23.384952809248887, 23.653683551501615, 23.850816893235958, 23.629290963033213]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.422493648734027, -1.9273261197702827, -1.593248020855467, -1.3796357776715007, -1.472696918340991]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.5985952261316925, -2.163989649478424, -1.8946160567680295, -1.5794385441070062, -1.791377574359501]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3777209952700178, -1.9953574879842397, -1.6281481615936853, -1.4481025807756518, -1.58130724772566]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5068542349542218, -2.349600643927393, -1.9271990977017566, -1.7727932846482934, -1.9484908881901886]}}