{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:11.102579", "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-Aug-26_to_2012-Sep-07_282.5_-8.0"}, "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": 2012080001169}, "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": "August 26 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 07 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 13}, "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": 85378.58692697177}, "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": ["Peru"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": -8.0}, "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": 282.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "282.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 281.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 285.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -11.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -5.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-08-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.0, -9.75], [-74.47, -9.97], [-74.25, -10.5], [-74.47, -11.03], [-75.0, -11.25], [-75.53, -11.03], [-75.75, -10.5], [-75.53, -9.97], [-75.0, -9.75]]]]}, "2012-08-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.0, -9.75], [-74.47, -9.97], [-74.25, -10.5], [-74.47, -11.03], [-75.0, -11.25], [-75.53, -11.03], [-75.75, -10.5], [-75.53, -9.97], [-75.0, -9.75]]]]}, "2012-08-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-78.53, -8.03], [-78.75, -7.5], [-78.53, -6.97], [-78.0, -6.75], [-77.47, -6.97], [-77.25, -7.5], [-77.43, -7.93], [-77.0, -7.75], [-76.47, -7.97], [-76.25, -8.5], [-76.37, -8.8], [-75.97, -8.97], [-75.82, -9.32], [-75.47, -9.47], [-75.32, -9.82], [-75.25, -9.85], [-75.0, -9.75], [-74.47, -9.97], [-74.25, -10.5], [-74.47, -11.03], [-74.82, -11.18], [-74.97, -11.53], [-75.5, -11.75], [-76.03, -11.53], [-76.25, -11.0], [-76.15, -10.75], [-76.18, -10.68], [-76.53, -10.53], [-76.68, -10.18], [-77.03, -10.03], [-77.25, -9.5], [-77.12, -9.2], [-77.53, -9.03], [-77.75, -8.5], [-77.57, -8.07], [-78.0, -8.25], [-78.53, -8.03]]]]}, "2012-08-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-78.75, -7.5], [-78.53, -6.97], [-78.0, -6.75], [-77.47, -6.97], [-77.32, -7.32], [-76.97, -7.47], [-76.82, -7.82], [-76.47, -7.97], [-76.25, -8.5], [-76.35, -8.75], [-76.32, -8.82], [-75.97, -8.97], [-75.82, -9.32], [-75.47, -9.47], [-75.32, -9.82], [-74.97, -9.97], [-74.75, -10.5], [-74.85, -10.75], [-74.75, -11.0], [-74.97, -11.53], [-75.32, -11.68], [-75.47, -12.03], [-76.0, -12.25], [-76.53, -12.03], [-76.75, -11.5], [-76.53, -10.97], [-76.18, -10.82], [-76.15, -10.75], [-76.18, -10.68], [-76.53, -10.53], [-76.68, -10.18], [-76.75, -10.15], [-77.0, -10.25], [-77.53, -10.03], [-77.75, -9.5], [-77.65, -9.25], [-77.75, -9.0], [-77.65, -8.75], [-77.68, -8.68], [-78.03, -8.53], [-78.18, -8.18], [-78.53, -8.03], [-78.75, -7.5]]]]}, "2012-08-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-78.75, -7.5], [-78.53, -6.97], [-78.0, -6.75], [-77.47, -6.97], [-77.32, -7.32], [-76.97, -7.47], [-76.82, -7.82], [-76.47, -7.97], [-76.25, -8.5], [-76.35, -8.75], [-76.32, -8.82], [-75.97, -8.97], [-75.82, -9.32], [-75.47, -9.47], [-75.32, -9.82], [-74.97, -9.97], [-74.75, -10.5], [-74.85, -10.75], [-74.75, -11.0], [-74.97, -11.53], [-75.32, -11.68], [-75.47, -12.03], [-76.0, -12.25], [-76.53, -12.03], [-76.75, -11.5], [-76.53, -10.97], [-76.18, -10.82], [-76.15, -10.75], [-76.18, -10.68], [-76.53, -10.53], [-76.68, -10.18], [-76.75, -10.15], [-77.0, -10.25], [-77.53, -10.03], [-77.75, -9.5], [-77.65, -9.25], [-77.75, -9.0], [-77.65, -8.75], [-77.68, -8.68], [-78.03, -8.53], [-78.18, -8.18], [-78.53, -8.03], [-78.75, -7.5]]]]}, "2012-08-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.47, -12.03], [-76.0, -12.25], [-76.53, -12.03], [-76.75, -11.5], [-76.53, -10.97], [-76.0, -10.75], [-75.47, -10.97], [-75.25, -11.5], [-75.47, -12.03]]], [[[-78.25, -8.0], [-78.03, -7.47], [-77.5, -7.25], [-76.97, -7.47], [-76.75, -8.0], [-76.87, -8.3], [-76.47, -8.47], [-76.32, -8.82], [-75.97, -8.97], [-75.82, -9.32], [-75.47, -9.47], [-75.25, -10.0], [-75.47, -10.53], [-76.0, -10.75], [-76.53, -10.53], [-76.68, -10.18], [-76.75, -10.15], [-77.0, -10.25], [-77.53, -10.03], [-77.75, -9.5], [-77.65, -9.25], [-77.75, -9.0], [-77.62, -8.7], [-78.03, -8.53], [-78.25, -8.0]]], [[[-78.25, -6.0], [-78.03, -5.47], [-77.5, -5.25], [-76.97, -5.47], [-76.75, -6.0], [-76.97, -6.53], [-77.5, -6.75], [-78.03, -6.53], [-78.25, -6.0]]]]}, "2012-09-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-78.53, -7.47], [-78.0, -7.25], [-77.75, -7.35], [-77.5, -7.25], [-76.97, -7.47], [-76.82, -7.82], [-76.47, -7.97], [-76.25, -8.5], [-76.35, -8.75], [-76.32, -8.82], [-75.97, -8.97], [-75.82, -9.32], [-75.47, -9.47], [-75.25, -10.0], [-75.47, -10.53], [-75.82, -10.68], [-75.97, -11.03], [-76.5, -11.25], [-77.03, -11.03], [-77.18, -10.68], [-77.53, -10.53], [-77.75, -10.0], [-77.65, -9.75], [-77.68, -9.68], [-78.03, -9.53], [-78.25, -9.0], [-78.15, -8.75], [-78.18, -8.68], [-78.53, -8.53], [-78.75, -8.0], [-78.53, -7.47]]], [[[-78.15, -6.25], [-78.25, -6.0], [-78.03, -5.47], [-77.5, -5.25], [-76.97, -5.47], [-76.75, -6.0], [-76.85, -6.25], [-76.75, -6.5], [-76.97, -7.03], [-77.5, -7.25], [-78.03, -7.03], [-78.25, -6.5], [-78.15, -6.25]]]]}, "2012-09-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-78.53, -7.47], [-78.0, -7.25], [-77.75, -7.35], [-77.5, -7.25], [-76.97, -7.47], [-76.82, -7.82], [-76.47, -7.97], [-76.25, -8.5], [-76.35, -8.75], [-76.32, -8.82], [-76.25, -8.85], [-76.0, -8.75], [-75.47, -8.97], [-75.25, -9.5], [-75.35, -9.75], [-75.25, -10.0], [-75.35, -10.25], [-75.25, -10.5], [-75.35, -10.75], [-75.32, -10.82], [-75.25, -10.85], [-75.0, -10.75], [-74.47, -10.97], [-74.25, -11.5], [-74.47, -12.03], [-75.0, -12.25], [-75.25, -12.15], [-75.5, -12.25], [-75.75, -12.15], [-76.0, -12.25], [-76.53, -12.03], [-76.68, -11.68], [-77.03, -11.53], [-77.25, -11.0], [-77.15, -10.75], [-77.18, -10.68], [-77.53, -10.53], [-77.75, -10.0], [-77.65, -9.75], [-77.68, -9.68], [-78.03, -9.53], [-78.25, -9.0], [-78.15, -8.75], [-78.18, -8.68], [-78.53, -8.53], [-78.75, -8.0], [-78.53, -7.47]]], [[[-78.15, -6.25], [-78.25, -6.0], [-78.03, -5.47], [-77.5, -5.25], [-76.97, -5.47], [-76.75, -6.0], [-76.85, -6.25], [-76.75, -6.5], [-76.97, -7.03], [-77.5, -7.25], [-78.03, -7.03], [-78.25, -6.5], [-78.15, -6.25]]]]}, "2012-09-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-78.53, -7.47], [-78.0, -7.25], [-77.75, -7.35], [-77.5, -7.25], [-76.97, -7.47], [-76.82, -7.82], [-76.47, -7.97], [-76.25, -8.5], [-76.35, -8.75], [-76.32, -8.82], [-76.25, -8.85], [-76.0, -8.75], [-75.47, -8.97], [-75.25, -9.5], [-75.35, -9.75], [-75.25, -10.0], [-75.35, -10.25], [-75.25, -10.5], [-75.35, -10.75], [-75.32, -10.82], [-75.25, -10.85], [-75.0, -10.75], [-74.47, -10.97], [-74.25, -11.5], [-74.47, -12.03], [-75.0, -12.25], [-75.25, -12.15], [-75.5, -12.25], [-75.75, -12.15], [-76.0, -12.25], [-76.53, -12.03], [-76.68, -11.68], [-77.03, -11.53], [-77.25, -11.0], [-77.15, -10.75], [-77.18, -10.68], [-77.53, -10.53], [-77.75, -10.0], [-77.65, -9.75], [-77.68, -9.68], [-78.03, -9.53], [-78.25, -9.0], [-78.15, -8.75], [-78.18, -8.68], [-78.53, -8.53], [-78.75, -8.0], [-78.53, -7.47]]], [[[-78.15, -6.25], [-78.25, -6.0], [-78.03, -5.47], [-77.5, -5.25], [-76.97, -5.47], [-76.75, -6.0], [-76.85, -6.25], [-76.75, -6.5], [-76.97, -7.03], [-77.5, -7.25], [-78.03, -7.03], [-78.25, -6.5], [-78.15, -6.25]]]]}, "2012-09-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-78.65, -7.25], [-78.75, -7.0], [-78.53, -6.47], [-78.18, -6.32], [-78.15, -6.25], [-78.25, -6.0], [-78.03, -5.47], [-77.5, -5.25], [-76.97, -5.47], [-76.75, -6.0], [-76.85, -6.25], [-76.75, -6.5], [-76.85, -6.75], [-76.75, -7.0], [-76.85, -7.25], [-76.75, -7.5], [-76.85, -7.75], [-76.82, -7.82], [-76.47, -7.97], [-76.25, -8.5], [-76.35, -8.75], [-76.32, -8.82], [-76.25, -8.85], [-76.0, -8.75], [-75.47, -8.97], [-75.25, -9.5], [-75.35, -9.75], [-75.25, -10.0], [-75.35, -10.25], [-75.25, -10.5], [-75.35, -10.75], [-75.32, -10.82], [-75.25, -10.85], [-75.0, -10.75], [-74.47, -10.97], [-74.25, -11.5], [-74.47, -12.03], [-75.0, -12.25], [-75.25, -12.15], [-75.5, -12.25], [-75.75, -12.15], [-76.0, -12.25], [-76.53, -12.03], [-76.68, -11.68], [-77.03, -11.53], [-77.25, -11.0], [-77.15, -10.75], [-77.18, -10.68], [-77.53, -10.53], [-77.75, -10.0], [-77.65, -9.75], [-77.68, -9.68], [-78.03, -9.53], [-78.25, -9.0], [-78.15, -8.75], [-78.18, -8.68], [-78.53, -8.53], [-78.75, -8.0], [-78.65, -7.75], [-78.75, -7.5], [-78.65, -7.25]]]]}, "2012-09-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-78.53, -6.47], [-78.18, -6.32], [-78.03, -5.97], [-77.5, -5.75], [-76.97, -5.97], [-76.75, -6.5], [-76.85, -6.75], [-76.75, -7.0], [-76.85, -7.25], [-76.75, -7.5], [-76.85, -7.75], [-76.82, -7.82], [-76.47, -7.97], [-76.25, -8.5], [-76.35, -8.75], [-76.25, -9.0], [-76.43, -9.43], [-76.0, -9.25], [-75.47, -9.47], [-75.25, -10.0], [-75.47, -10.53], [-76.0, -10.75], [-76.53, -10.53], [-76.75, -10.0], [-76.57, -9.57], [-77.0, -9.75], [-77.53, -9.53], [-77.68, -9.18], [-78.03, -9.03], [-78.25, -8.5], [-78.15, -8.25], [-78.18, -8.18], [-78.53, -8.03], [-78.75, -7.5], [-78.65, -7.25], [-78.75, -7.0], [-78.53, -6.47]]]]}, "2012-09-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-78.53, -6.47], [-78.18, -6.32], [-78.03, -5.97], [-77.5, -5.75], [-76.97, -5.97], [-76.75, -6.5], [-76.85, -6.75], [-76.75, -7.0], [-76.85, -7.25], [-76.75, -7.5], [-76.85, -7.75], [-76.82, -7.82], [-76.47, -7.97], [-76.25, -8.5], [-76.35, -8.75], [-76.25, -9.0], [-76.47, -9.53], [-77.0, -9.75], [-77.53, -9.53], [-77.68, -9.18], [-78.03, -9.03], [-78.25, -8.5], [-78.15, -8.25], [-78.18, -8.18], [-78.53, -8.03], [-78.75, -7.5], [-78.65, -7.25], [-78.75, -7.0], [-78.53, -6.47]]]]}, "2012-09-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-78.75, -7.5], [-78.53, -6.97], [-78.0, -6.75], [-77.47, -6.97], [-77.32, -7.32], [-76.97, -7.47], [-76.82, -7.82], [-76.47, -7.97], [-76.25, -8.5], [-76.47, -9.03], [-77.0, -9.25], [-77.53, -9.03], [-77.68, -8.68], [-78.03, -8.53], [-78.18, -8.18], [-78.53, -8.03], [-78.75, -7.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.592909519337752}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6332613760231138}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.54635723432949, 20.749318247780252, 11.379981946855423, 7.970674280356604, 7.956259293458061, 7.16431330812776, 7.009051493153606, 5.949455298421924, 6.288997759726669, 6.768228556430017, 10.255855909785907, 10.04653587331029, 10.163306283094414]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.54635723432949, 20.749318247780252, 6.563236002248573, 1.6894188173495763, 1.3090233297476743, 1.9524422762111158, 2.536678643923949, 0.31115770139587084, 0.7690407765025498, 0.7202280243839141, 7.405872294223002, 7.24013597307578, 8.157604893712175]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.7539762537588786, -1.5971362278414176, -1.5336793129696389, -1.5406413956104927, -1.5550323276905318, -1.394890684097902, -1.4765573197714892, -1.7729611298167247, -1.47662653799536, -1.9376662429777889, -1.4472557119508451, -1.7930699881830303, -1.4168349948914738]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.7539762537588786, -1.5971362278414176, -2.207778640102788, -2.2259623824997448, -2.0991021282125644, -1.8918859343437475, -1.819803750555252, -2.2924230465419555, -1.905382776892111, -2.455513026389326, -1.9259125398128845, -2.592909519337752, -1.8929860462485522]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6056281271601125, -1.4761578466452032, -1.8514673195993006, -1.8327074235540646, -1.8205934121767597, -1.6687804599276805, -1.7227886999456425, -2.0816171628003706, -1.7966165589615288, -2.3790625602331006, -1.7337525021078009, -2.1539136020626986, -1.630325735144505]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6056281271601125, -1.4761578466452032, -2.368247839762254, -2.470602585858999, -2.3722711941146617, -2.352267746328539, -2.1165746187058563, -2.9069224256658415, -2.2279009967873753, -2.9028767973695664, -2.2607210397722124, -3.0792709831265026, -2.1782336007799117]}}