{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:27.384148", "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": "2011-May-21_to_2011-May-27_299.0_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": 2011050001089}, "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": "May 21 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 27 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 92559.38271300565}, "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", "Guyana", "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": 299.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "299.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 297.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 301.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 1.75}, "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": {"2011-05-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.15, 4.25], [-62.25, 4.5], [-62.03, 5.03], [-61.5, 5.25], [-60.97, 5.03], [-60.82, 4.68], [-60.47, 4.53], [-60.25, 4.0], [-60.35, 3.75], [-60.25, 3.5], [-60.47, 2.97], [-61.0, 2.75], [-61.25, 2.85], [-61.5, 2.75], [-62.03, 2.97], [-62.25, 3.5], [-62.15, 3.75], [-62.25, 4.0], [-62.15, 4.25]]]]}, "2011-05-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.65, 2.75], [-62.75, 3.0], [-62.54, 3.5], [-62.75, 4.0], [-62.53, 4.53], [-62.18, 4.68], [-62.03, 5.03], [-61.5, 5.25], [-60.97, 5.03], [-60.82, 4.68], [-60.47, 4.53], [-60.25, 4.0], [-60.35, 3.75], [-60.25, 3.5], [-60.35, 3.25], [-60.32, 3.18], [-59.97, 3.03], [-59.75, 2.5], [-59.85, 2.25], [-59.75, 2.0], [-59.97, 1.47], [-60.5, 1.25], [-60.75, 1.35], [-61.0, 1.25], [-61.25, 1.35], [-61.5, 1.25], [-61.75, 1.35], [-62.0, 1.25], [-62.53, 1.47], [-62.75, 2.0], [-62.65, 2.25], [-62.75, 2.5], [-62.65, 2.75]]]]}, "2011-05-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.65, 2.75], [-62.75, 3.0], [-62.54, 3.5], [-62.75, 4.0], [-62.53, 4.53], [-62.18, 4.68], [-62.03, 5.03], [-61.5, 5.25], [-61.0, 5.04], [-60.5, 5.25], [-60.25, 5.15], [-60.0, 5.25], [-59.75, 5.15], [-59.5, 5.25], [-59.25, 5.15], [-59.0, 5.25], [-58.47, 5.03], [-58.32, 4.68], [-57.97, 4.53], [-57.75, 4.0], [-57.97, 3.47], [-58.5, 3.25], [-58.75, 3.35], [-58.82, 3.32], [-58.97, 2.97], [-59.5, 2.75], [-59.75, 2.85], [-59.82, 2.82], [-59.85, 2.75], [-59.75, 2.5], [-59.85, 2.25], [-59.75, 2.0], [-59.97, 1.47], [-60.5, 1.25], [-60.75, 1.35], [-61.0, 1.25], [-61.25, 1.35], [-61.5, 1.25], [-61.75, 1.35], [-62.0, 1.25], [-62.53, 1.47], [-62.75, 2.0], [-62.65, 2.25], [-62.75, 2.5], [-62.65, 2.75]]]]}, "2011-05-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.65, 2.75], [-62.75, 3.0], [-62.54, 3.5], [-62.75, 4.0], [-62.53, 4.53], [-62.18, 4.68], [-62.03, 5.03], [-61.5, 5.25], [-61.0, 5.04], [-60.5, 5.25], [-60.25, 5.15], [-60.0, 5.25], [-59.75, 5.15], [-59.5, 5.25], [-59.25, 5.15], [-59.0, 5.25], [-58.47, 5.03], [-58.32, 4.68], [-57.97, 4.53], [-57.75, 4.0], [-57.97, 3.47], [-58.5, 3.25], [-58.75, 3.35], [-58.82, 3.32], [-58.97, 2.97], [-59.5, 2.75], [-59.75, 2.85], [-59.82, 2.82], [-59.85, 2.75], [-59.75, 2.5], [-59.85, 2.25], [-59.75, 2.0], [-59.97, 1.47], [-60.5, 1.25], [-60.75, 1.35], [-61.0, 1.25], [-61.25, 1.35], [-61.5, 1.25], [-61.75, 1.35], [-62.0, 1.25], [-62.53, 1.47], [-62.75, 2.0], [-62.65, 2.25], [-62.75, 2.5], [-62.65, 2.75]]]]}, "2011-05-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.65, 3.25], [-61.75, 3.5], [-61.65, 3.75], [-61.75, 4.0], [-61.53, 4.53], [-61.18, 4.68], [-61.03, 5.03], [-60.5, 5.25], [-60.25, 5.15], [-60.0, 5.25], [-59.75, 5.15], [-59.5, 5.25], [-59.25, 5.15], [-59.0, 5.25], [-58.47, 5.03], [-58.32, 4.68], [-57.97, 4.53], [-57.75, 4.0], [-57.97, 3.47], [-58.5, 3.25], [-58.75, 3.35], [-58.82, 3.32], [-58.97, 2.97], [-59.5, 2.75], [-59.75, 2.85], [-59.82, 2.82], [-59.85, 2.75], [-59.75, 2.5], [-59.97, 1.97], [-60.5, 1.75], [-60.75, 1.85], [-61.0, 1.75], [-61.53, 1.97], [-61.75, 2.5], [-61.65, 2.75], [-61.75, 3.0], [-61.65, 3.25]]]]}, "2011-05-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.5, 5.25], [-59.97, 5.03], [-59.75, 4.5], [-59.97, 3.97], [-60.5, 3.75], [-61.03, 3.97], [-61.25, 4.5], [-61.03, 5.03], [-60.5, 5.25]]]]}, "2011-05-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.5, 5.25], [-59.97, 5.03], [-59.75, 4.5], [-59.97, 3.97], [-60.5, 3.75], [-61.03, 3.97], [-61.25, 4.5], [-61.03, 5.03], [-60.5, 5.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.1809897791744106}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.7513751516807976}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.774826570596986, 23.938595403082445, 24.06856594569075, 23.32709368700671, 24.391847450317414, 23.203114817764458, 23.106567415538336]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.1172568281213, 21.21734135415926, 21.178352603052133, 20.38032923760767, 22.838228340908188, 23.203114817764458, 23.106567415538336]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.499196077577642, -1.4079053609973102, -1.5377653418896804, -2.2978423210454233, -1.6301299989453197, -1.3970340919564137, -1.4022899855735886]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.897942020080734, -1.5597808654903247, -2.18711562978541, -3.1809897791744106, -2.302628656585796, -1.3970340919564137, -1.4022899855735886]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.479382325992206, -1.405488638058791, -1.4244348181026447, -2.063115623611516, -1.412405744091134, -1.2227718731621136, -1.2328213247837576]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.584220374051835, -1.5846199537129306, -1.6902099342421977, -2.8539150678031464, -1.6042382845037333, -1.2227718731621136, -1.2328213247837576]}}