{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:56:50.626413", "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": "2014-Jul-21_to_2014-Jul-29_40.0_14.0"}, "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": 2014070000972}, "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": "July 21 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 29 2014"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 9}, "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": 131074.84277246933}, "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": ["Eritrea", "Ethiopia", "Yemen"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Arabian-Peninsula", "N.Eastern-Africa", "Sahara"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "Asia"]}, "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": ["Red Sea"]}, "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": 14.0}, "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": 40.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "40.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 39.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 42.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 12.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 19.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-07-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.97, 14.53], [40.5, 14.75], [41.03, 14.53], [41.25, 14.0], [41.15, 13.75], [41.25, 13.5], [41.03, 12.97], [40.5, 12.75], [39.97, 12.97], [39.75, 13.5], [39.85, 13.75], [39.75, 14.0], [39.97, 14.53]]]]}, "2014-07-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.47, 14.53], [40.0, 14.75], [40.25, 14.65], [40.32, 14.68], [40.47, 15.03], [41.0, 15.25], [41.53, 15.03], [41.75, 14.5], [41.53, 13.97], [41.18, 13.82], [41.15, 13.75], [41.25, 13.5], [41.03, 12.97], [40.5, 12.75], [40.25, 12.85], [40.0, 12.75], [39.47, 12.97], [39.25, 13.5], [39.35, 13.75], [39.25, 14.0], [39.47, 14.53]]]]}, "2014-07-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.47, 14.53], [40.0, 14.75], [40.25, 14.65], [40.32, 14.68], [40.35, 14.75], [40.25, 15.0], [40.35, 15.25], [40.25, 15.5], [40.35, 15.75], [40.32, 15.82], [40.25, 15.85], [40.0, 15.75], [39.47, 15.97], [39.25, 16.5], [39.35, 16.75], [39.25, 17.0], [39.47, 17.53], [40.0, 17.75], [40.3, 17.63], [40.35, 17.75], [40.25, 18.0], [40.35, 18.25], [40.25, 18.5], [40.35, 18.75], [40.25, 19.0], [40.47, 19.53], [41.0, 19.75], [41.53, 19.53], [41.75, 19.0], [41.65, 18.75], [41.75, 18.5], [41.65, 18.25], [41.68, 18.18], [42.03, 18.03], [42.25, 17.5], [42.15, 17.25], [42.18, 17.18], [42.53, 17.03], [42.68, 16.68], [43.03, 16.53], [43.25, 16.0], [43.15, 15.75], [43.25, 15.5], [43.15, 15.25], [43.25, 15.0], [43.15, 14.75], [43.25, 14.5], [43.15, 14.25], [43.25, 14.0], [43.15, 13.75], [43.25, 13.5], [43.03, 12.97], [42.5, 12.75], [41.97, 12.97], [41.82, 13.32], [41.75, 13.35], [41.5, 13.25], [41.2, 13.38], [41.03, 12.97], [40.5, 12.75], [40.25, 12.85], [40.0, 12.75], [39.47, 12.97], [39.25, 13.5], [39.35, 13.75], [39.25, 14.0], [39.47, 14.53]]]]}, "2014-07-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.47, 14.53], [40.0, 14.75], [40.3, 14.63], [40.35, 14.75], [40.32, 14.82], [39.97, 14.97], [39.75, 15.5], [39.85, 15.75], [39.82, 15.82], [39.47, 15.97], [39.25, 16.5], [39.35, 16.75], [39.25, 17.0], [39.47, 17.53], [40.0, 17.75], [40.25, 17.65], [40.32, 17.68], [40.35, 17.75], [40.25, 18.0], [40.35, 18.25], [40.25, 18.5], [40.35, 18.75], [40.25, 19.0], [40.47, 19.53], [41.0, 19.75], [41.53, 19.53], [41.75, 19.0], [41.65, 18.75], [41.75, 18.5], [41.65, 18.25], [41.68, 18.18], [42.03, 18.03], [42.25, 17.5], [42.15, 17.25], [42.18, 17.18], [42.53, 17.03], [42.68, 16.68], [43.03, 16.53], [43.25, 16.0], [43.15, 15.75], [43.25, 15.5], [43.15, 15.25], [43.25, 15.0], [43.15, 14.75], [43.25, 14.5], [43.15, 14.25], [43.25, 14.0], [43.15, 13.75], [43.25, 13.5], [43.03, 12.97], [42.5, 12.75], [41.97, 12.97], [41.82, 13.32], [41.75, 13.35], [41.5, 13.25], [40.97, 13.47], [40.82, 13.82], [40.7, 13.88], [40.65, 13.75], [40.75, 13.5], [40.53, 12.97], [40.0, 12.75], [39.47, 12.97], [39.25, 13.5], [39.35, 13.75], [39.25, 14.0], [39.47, 14.53]]]]}, "2014-07-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.47, 17.53], [40.0, 17.75], [40.25, 17.65], [40.32, 17.68], [40.35, 17.75], [40.25, 18.0], [40.35, 18.25], [40.25, 18.5], [40.35, 18.75], [40.25, 19.0], [40.47, 19.53], [41.0, 19.75], [41.53, 19.53], [41.75, 19.0], [41.65, 18.75], [41.75, 18.5], [41.65, 18.25], [41.68, 18.18], [42.03, 18.03], [42.25, 17.5], [42.15, 17.25], [42.18, 17.18], [42.53, 17.03], [42.68, 16.68], [43.03, 16.53], [43.25, 16.0], [43.15, 15.75], [43.25, 15.5], [43.15, 15.25], [43.25, 15.0], [43.15, 14.75], [43.25, 14.5], [43.15, 14.25], [43.25, 14.0], [43.15, 13.75], [43.25, 13.5], [43.03, 12.97], [42.5, 12.75], [41.97, 12.97], [41.82, 13.32], [41.75, 13.35], [41.5, 13.25], [40.97, 13.47], [40.82, 13.82], [40.7, 13.88], [40.53, 13.47], [40.0, 13.25], [39.47, 13.47], [39.25, 14.0], [39.47, 14.53], [40.0, 14.75], [40.3, 14.63], [40.35, 14.75], [40.32, 14.82], [39.97, 14.97], [39.75, 15.5], [39.85, 15.75], [39.82, 15.82], [39.47, 15.97], [39.25, 16.5], [39.35, 16.75], [39.25, 17.0], [39.47, 17.53]]]]}, "2014-07-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.47, 17.53], [40.0, 17.75], [40.25, 17.65], [40.32, 17.68], [40.35, 17.75], [40.25, 18.0], [40.35, 18.25], [40.25, 18.5], [40.47, 19.03], [41.0, 19.25], [41.53, 19.03], [41.75, 18.5], [41.65, 18.25], [41.68, 18.18], [42.03, 18.03], [42.25, 17.5], [42.15, 17.25], [42.18, 17.18], [42.53, 17.03], [42.68, 16.68], [43.03, 16.53], [43.25, 16.0], [43.15, 15.75], [43.25, 15.5], [43.15, 15.25], [43.25, 15.0], [43.15, 14.75], [43.25, 14.5], [43.15, 14.25], [43.25, 14.0], [43.15, 13.75], [43.25, 13.5], [43.03, 12.97], [42.68, 12.82], [42.65, 12.75], [42.75, 12.5], [42.53, 11.97], [42.0, 11.75], [41.75, 11.85], [41.5, 11.75], [41.25, 11.85], [41.0, 11.75], [40.47, 11.97], [40.25, 12.5], [40.47, 13.03], [41.0, 13.25], [41.25, 13.15], [41.32, 13.18], [41.38, 13.3], [40.97, 13.47], [40.82, 13.82], [40.7, 13.88], [40.53, 13.47], [40.0, 13.25], [39.47, 13.47], [39.25, 14.0], [39.47, 14.53], [40.0, 14.75], [40.3, 14.63], [40.35, 14.75], [40.32, 14.82], [39.97, 14.97], [39.75, 15.5], [39.85, 15.75], [39.82, 15.82], [39.47, 15.97], [39.25, 16.5], [39.35, 16.75], [39.25, 17.0], [39.47, 17.53]]]]}, "2014-07-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.47, 13.47], [39.25, 14.0], [39.47, 14.53], [40.0, 14.75], [40.53, 14.53], [40.75, 14.0], [40.53, 13.47], [40.0, 13.25], [39.47, 13.47]]], [[[41.5, 17.25], [42.03, 17.03], [42.18, 16.68], [42.25, 16.65], [42.5, 16.75], [43.03, 16.53], [43.25, 16.0], [43.15, 15.75], [43.25, 15.5], [43.15, 15.25], [43.25, 15.0], [43.04, 14.5], [43.25, 14.0], [43.15, 13.75], [43.25, 13.5], [43.03, 12.97], [42.68, 12.82], [42.65, 12.75], [42.75, 12.5], [42.53, 11.97], [42.0, 11.75], [41.75, 11.85], [41.5, 11.75], [41.25, 11.85], [41.0, 11.75], [40.47, 11.97], [40.25, 12.5], [40.47, 13.03], [41.0, 13.25], [41.25, 13.15], [41.32, 13.18], [41.46, 13.5], [41.32, 13.82], [40.97, 13.97], [40.75, 14.5], [40.97, 15.03], [41.32, 15.18], [41.35, 15.25], [41.32, 15.32], [40.97, 15.47], [40.75, 16.0], [40.85, 16.25], [40.75, 16.5], [40.97, 17.03], [41.5, 17.25]]]]}, "2014-07-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.25, 12.5], [40.47, 13.03], [41.0, 13.25], [41.25, 13.15], [41.32, 13.18], [41.47, 13.53], [42.0, 13.75], [42.53, 13.53], [42.75, 13.0], [42.65, 12.75], [42.75, 12.5], [42.53, 11.97], [42.0, 11.75], [41.75, 11.85], [41.5, 11.75], [41.25, 11.85], [41.0, 11.75], [40.47, 11.97], [40.25, 12.5]]], [[[42.5, 16.75], [43.03, 16.53], [43.25, 16.0], [43.04, 15.5], [43.25, 15.0], [43.03, 14.47], [42.5, 14.25], [41.97, 14.47], [41.75, 15.0], [41.96, 15.5], [41.75, 16.0], [41.97, 16.53], [42.5, 16.75]]]]}, "2014-07-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[41.97, 16.53], [42.5, 16.75], [43.03, 16.53], [43.25, 16.0], [43.04, 15.5], [43.25, 15.0], [43.03, 14.47], [42.5, 14.25], [41.97, 14.47], [41.75, 15.0], [41.96, 15.5], [41.75, 16.0], [41.97, 16.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.841965060424968}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.2454582531423195}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [35.58301765246267, 31.616031820862815, 31.15783217904516, 30.89498750434643, 30.92856433723159, 30.50904566388391, 30.259760473895824, 29.820262282245096, 30.358345994160686]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [35.53487704639707, 27.740596429033474, 27.19988913737552, 27.171904286790607, 27.897594772344405, 26.33519056960108, 26.98941974026843, 28.48785857024626, 30.24057641461593]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.4601741288670382, -1.7200590152213409, -1.0013918489249045, -1.0127776349430946, -1.0274080465432591, -1.4958980559171153, -1.6450481551004923, -2.3109286200302868, -0.8907800422180401]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.6460597931391021, -2.272736401576992, -2.9565369566127515, -2.8954996424446335, -2.10764495943738, -4.841965060424968, -4.799570532261669, -3.4965393937355316, -0.917303681125361]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.460833291787424, -1.658474204034426, -1.5248041515727329, -1.602937471611062, -1.6501245854028748, -1.8998539613209793, -1.5143919125036167, -1.4616234808247217, -1.3057754984106986]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5722073696515704, -2.0880657571265226, -2.3470519885192003, -2.1700724183755513, -2.0149731475321158, -2.6574198864651284, -2.559600965239622, -1.7576205370637197, -1.3197544264902128]}}