{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:53.422083", "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": "2018-Jan-18_to_2018-Jan-21_328.5_-6.0"}, "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": 2018010000730}, "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 18 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 21 2018"}, "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": 113755.94910792037}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Equatorial.Atlantic-Ocean", "N.E.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": ["South Atlantic Ocean"]}, "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": -6.0}, "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": 328.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "328.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 324.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 330.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -7.25}, "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": {"2018-01-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-32.25, -7.0], [-32.03, -6.47], [-31.5, -6.25], [-31.25, -6.35], [-31.0, -6.25], [-30.7, -6.38], [-30.53, -5.97], [-30.0, -5.75], [-29.75, -5.85], [-29.5, -5.75], [-28.97, -5.97], [-28.75, -6.5], [-28.97, -7.03], [-29.32, -7.18], [-29.47, -7.53], [-30.0, -7.75], [-30.5, -7.54], [-31.0, -7.75], [-31.25, -7.65], [-31.5, -7.75], [-32.03, -7.53], [-32.25, -7.0]]], [[[-35.75, -6.0], [-35.65, -5.75], [-35.75, -5.5], [-35.53, -4.97], [-35.0, -4.75], [-34.47, -4.97], [-34.32, -5.32], [-33.97, -5.47], [-33.75, -6.0], [-33.97, -6.53], [-34.32, -6.68], [-34.35, -6.75], [-34.25, -7.0], [-34.47, -7.53], [-35.0, -7.75], [-35.53, -7.53], [-35.75, -7.0], [-35.65, -6.75], [-35.75, -6.5], [-35.65, -6.25], [-35.75, -6.0]]]]}, "2018-01-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-35.65, -6.25], [-35.75, -6.0], [-35.65, -5.75], [-35.75, -5.5], [-35.53, -4.97], [-35.0, -4.75], [-34.75, -4.85], [-34.68, -4.82], [-34.53, -4.47], [-34.0, -4.25], [-33.75, -4.35], [-33.5, -4.25], [-33.25, -4.35], [-33.0, -4.25], [-32.75, -4.35], [-32.5, -4.25], [-32.25, -4.35], [-32.0, -4.25], [-31.75, -4.35], [-31.5, -4.25], [-31.25, -4.35], [-31.0, -4.25], [-30.47, -4.47], [-30.25, -5.0], [-30.35, -5.25], [-30.32, -5.32], [-29.97, -5.47], [-29.82, -5.82], [-29.75, -5.85], [-29.5, -5.75], [-28.97, -5.97], [-28.75, -6.5], [-28.97, -7.03], [-29.32, -7.18], [-29.47, -7.53], [-30.0, -7.75], [-30.5, -7.54], [-31.0, -7.75], [-31.25, -7.65], [-31.5, -7.75], [-32.03, -7.53], [-32.18, -7.18], [-32.25, -7.15], [-32.5, -7.25], [-33.03, -7.03], [-33.18, -6.68], [-33.25, -6.65], [-33.5, -6.75], [-34.0, -6.54], [-34.32, -6.68], [-34.35, -6.75], [-34.25, -7.0], [-34.47, -7.53], [-35.0, -7.75], [-35.53, -7.53], [-35.75, -7.0], [-35.65, -6.75], [-35.75, -6.5], [-35.65, -6.25]]]]}, "2018-01-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-35.65, -6.25], [-35.75, -6.0], [-35.65, -5.75], [-35.75, -5.5], [-35.53, -4.97], [-35.0, -4.75], [-34.75, -4.85], [-34.68, -4.82], [-34.53, -4.47], [-34.0, -4.25], [-33.75, -4.35], [-33.5, -4.25], [-33.25, -4.35], [-33.0, -4.25], [-32.75, -4.35], [-32.5, -4.25], [-32.25, -4.35], [-32.0, -4.25], [-31.75, -4.35], [-31.5, -4.25], [-31.25, -4.35], [-31.0, -4.25], [-30.47, -4.47], [-30.25, -5.0], [-30.35, -5.25], [-30.32, -5.32], [-29.97, -5.47], [-29.82, -5.82], [-29.75, -5.85], [-29.5, -5.75], [-28.97, -5.97], [-28.75, -6.5], [-28.97, -7.03], [-29.32, -7.18], [-29.47, -7.53], [-30.0, -7.75], [-30.5, -7.54], [-31.0, -7.75], [-31.25, -7.65], [-31.5, -7.75], [-32.03, -7.53], [-32.18, -7.18], [-32.25, -7.15], [-32.5, -7.25], [-33.03, -7.03], [-33.18, -6.68], [-33.25, -6.65], [-33.5, -6.75], [-34.0, -6.54], [-34.32, -6.68], [-34.35, -6.75], [-34.25, -7.0], [-34.47, -7.53], [-35.0, -7.75], [-35.53, -7.53], [-35.75, -7.0], [-35.65, -6.75], [-35.75, -6.5], [-35.65, -6.25]]]]}, "2018-01-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-34.0, -4.25], [-33.75, -4.35], [-33.5, -4.25], [-33.25, -4.35], [-33.0, -4.25], [-32.75, -4.35], [-32.5, -4.25], [-32.25, -4.35], [-32.0, -4.25], [-31.75, -4.35], [-31.5, -4.25], [-31.25, -4.35], [-31.0, -4.25], [-30.47, -4.47], [-30.25, -5.0], [-30.35, -5.25], [-30.32, -5.32], [-29.97, -5.47], [-29.82, -5.82], [-29.75, -5.85], [-29.5, -5.75], [-28.97, -5.97], [-28.75, -6.5], [-28.97, -7.03], [-29.32, -7.18], [-29.47, -7.53], [-30.0, -7.75], [-30.5, -7.54], [-31.0, -7.75], [-31.25, -7.65], [-31.5, -7.75], [-32.03, -7.53], [-32.18, -7.18], [-32.25, -7.15], [-32.5, -7.25], [-33.03, -7.03], [-33.18, -6.68], [-33.25, -6.65], [-33.5, -6.75], [-34.03, -6.53], [-34.18, -6.18], [-34.25, -6.15], [-34.5, -6.25], [-35.03, -6.03], [-35.25, -5.5], [-35.03, -4.97], [-34.68, -4.82], [-34.53, -4.47], [-34.0, -4.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.6761081280434382}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.9102779622975953}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.58756948369046, 25.53656333098803, 25.583922468838637, 25.523426160403744]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.32093244321942, 25.00913277300458, 25.301603468279666, 25.254926050074403]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.8625691256610537, -0.9024363262711782, -0.8872932763698277, -0.9608299085060406]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.1680691433952575, -1.6761081280434382, -1.1801357421892362, -1.2228254452859346]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.74965811348152, -1.9799672564409592, -1.9444296746706964, -2.0648745687085013]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.127680191581014, -2.8254563495142264, -2.8366191054974714, -2.727792913084618]}}