{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:50.005259", "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": "2013-Jul-08_to_2013-Jul-11_0.5_17.0"}, "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": 2013070000590}, "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 08 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 11 2013"}, "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": 84999.51791285275}, "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": ["Algeria", "Mali"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "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": 17.0}, "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": 0.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "0.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": -0.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 2.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 16.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 20.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-07-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.03, 19.03], [-0.5, 19.25], [-0.25, 19.15], [0.0, 19.25], [0.5, 19.04], [0.82, 19.18], [0.85, 19.25], [0.82, 19.32], [0.47, 19.47], [0.25, 20.0], [0.47, 20.53], [1.0, 20.75], [1.25, 20.65], [1.32, 20.68], [1.47, 21.03], [2.0, 21.25], [2.25, 21.15], [2.5, 21.25], [3.03, 21.03], [3.25, 20.5], [3.15, 20.25], [3.25, 20.0], [3.15, 19.75], [3.25, 19.5], [3.03, 18.97], [2.68, 18.82], [2.65, 18.75], [2.75, 18.5], [2.53, 17.97], [2.18, 17.82], [2.03, 17.47], [1.5, 17.25], [1.0, 17.46], [0.5, 17.25], [0.25, 17.35], [0.0, 17.25], [-0.25, 17.35], [-0.5, 17.25], [-1.03, 17.47], [-1.25, 18.0], [-1.15, 18.25], [-1.25, 18.5], [-1.03, 19.03]]]]}, "2013-07-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.03, 19.03], [-0.5, 19.25], [-0.25, 19.15], [0.0, 19.25], [0.5, 19.04], [0.82, 19.18], [0.85, 19.25], [0.82, 19.32], [0.47, 19.47], [0.25, 20.0], [0.47, 20.53], [1.0, 20.75], [1.25, 20.65], [1.32, 20.68], [1.47, 21.03], [2.0, 21.25], [2.25, 21.15], [2.5, 21.25], [3.03, 21.03], [3.25, 20.5], [3.15, 20.25], [3.25, 20.0], [3.15, 19.75], [3.25, 19.5], [3.03, 18.97], [2.68, 18.82], [2.65, 18.75], [2.75, 18.5], [2.53, 17.97], [2.18, 17.82], [2.15, 17.75], [2.25, 17.5], [2.03, 16.97], [1.68, 16.82], [1.53, 16.47], [1.18, 16.32], [1.03, 15.97], [0.5, 15.75], [0.25, 15.85], [0.0, 15.75], [-0.53, 15.97], [-0.75, 16.5], [-0.65, 16.75], [-0.75, 17.0], [-0.65, 17.25], [-0.68, 17.32], [-1.03, 17.47], [-1.25, 18.0], [-1.15, 18.25], [-1.25, 18.5], [-1.03, 19.03]]]]}, "2013-07-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.03, 19.03], [-0.5, 19.25], [-0.25, 19.15], [0.0, 19.25], [0.5, 19.04], [0.82, 19.18], [0.85, 19.25], [0.82, 19.32], [0.47, 19.47], [0.25, 20.0], [0.47, 20.53], [1.0, 20.75], [1.25, 20.65], [1.32, 20.68], [1.47, 21.03], [2.0, 21.25], [2.25, 21.15], [2.5, 21.25], [3.03, 21.03], [3.25, 20.5], [3.15, 20.25], [3.25, 20.0], [3.15, 19.75], [3.25, 19.5], [3.03, 18.97], [2.68, 18.82], [2.65, 18.75], [2.75, 18.5], [2.53, 17.97], [2.18, 17.82], [2.15, 17.75], [2.25, 17.5], [2.03, 16.97], [1.68, 16.82], [1.53, 16.47], [1.18, 16.32], [1.03, 15.97], [0.5, 15.75], [0.25, 15.85], [0.0, 15.75], [-0.53, 15.97], [-0.75, 16.5], [-0.65, 16.75], [-0.75, 17.0], [-0.65, 17.25], [-0.68, 17.32], [-1.03, 17.47], [-1.25, 18.0], [-1.15, 18.25], [-1.25, 18.5], [-1.03, 19.03]]]]}, "2013-07-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-0.65, 17.25], [-0.75, 17.5], [-0.53, 18.03], [-0.18, 18.18], [-0.03, 18.53], [0.5, 18.75], [1.03, 18.53], [1.18, 18.18], [1.25, 18.15], [1.5, 18.25], [2.03, 18.03], [2.25, 17.5], [2.03, 16.97], [1.68, 16.82], [1.53, 16.47], [1.18, 16.32], [1.03, 15.97], [0.5, 15.75], [0.25, 15.85], [0.0, 15.75], [-0.53, 15.97], [-0.75, 16.5], [-0.65, 16.75], [-0.75, 17.0], [-0.65, 17.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.9841045245107125}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.9679688865522675}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [32.410914914667785, 31.079600488054666, 31.417292496195444, 31.068874032322583]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [31.036519818166255, 29.237645659004954, 29.60307870057801, 29.721615676158535]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.2283840238738604, -3.3753755804779133, -3.0074772697395424, -3.1510848882816105]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.0033047632223315, -4.9841045245107125, -4.630945086822976, -4.185770428049011]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7603500288136409, -2.3789334044520603, -2.0379215755524416, -1.85635773590488]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.482457149152854, -3.063635461753057, -2.944773811739565, -2.3296029173956474]}}