{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:38.898662", "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-Feb-25_to_2012-Mar-02_34.5_-5.0"}, "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": 2012020001398}, "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": "February 25 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 02 2012"}, "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": 67820.08152483123}, "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": ["Tanzania"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Eastern-Africa"]}, "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": -5.0}, "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": 34.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "34.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 33.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 35.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -5.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -2.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-02-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.97, -2.97], [33.5, -2.75], [33.75, -2.85], [33.82, -2.82], [33.85, -2.75], [33.75, -2.5], [33.97, -1.97], [34.5, -1.75], [34.75, -1.85], [35.0, -1.75], [35.53, -1.97], [35.75, -2.5], [35.65, -2.75], [35.75, -3.0], [35.54, -3.5], [35.75, -4.0], [35.53, -4.53], [35.13, -4.7], [35.2, -4.88], [35.5, -4.75], [36.03, -4.97], [36.25, -5.5], [36.03, -6.03], [35.5, -6.25], [35.0, -6.04], [34.5, -6.25], [34.25, -6.15], [34.0, -6.25], [33.47, -6.03], [33.25, -5.5], [33.46, -5.0], [33.32, -4.68], [32.97, -4.53], [32.75, -4.0], [32.85, -3.75], [32.75, -3.5], [32.97, -2.97]]]]}, "2012-02-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.97, -2.97], [33.5, -2.75], [33.75, -2.85], [33.82, -2.82], [33.85, -2.75], [33.75, -2.5], [33.97, -1.97], [34.5, -1.75], [34.75, -1.85], [35.0, -1.75], [35.53, -1.97], [35.75, -2.5], [35.65, -2.75], [35.75, -3.0], [35.63, -3.3], [36.03, -3.47], [36.25, -4.0], [36.15, -4.25], [36.25, -4.5], [36.04, -5.0], [36.25, -5.5], [36.03, -6.03], [35.5, -6.25], [35.0, -6.04], [34.5, -6.25], [34.25, -6.15], [34.0, -6.25], [33.47, -6.03], [33.25, -5.5], [33.46, -5.0], [33.32, -4.68], [32.97, -4.53], [32.75, -4.0], [32.85, -3.75], [32.75, -3.5], [32.97, -2.97]]]]}, "2012-02-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.97, -2.97], [33.5, -2.75], [33.75, -2.85], [33.82, -2.82], [33.85, -2.75], [33.75, -2.5], [33.97, -1.97], [34.5, -1.75], [34.75, -1.85], [35.0, -1.75], [35.53, -1.97], [35.75, -2.5], [35.65, -2.75], [35.75, -3.0], [35.63, -3.3], [36.03, -3.47], [36.25, -4.0], [36.15, -4.25], [36.25, -4.5], [36.04, -5.0], [36.25, -5.5], [36.03, -6.03], [35.5, -6.25], [35.0, -6.04], [34.5, -6.25], [34.25, -6.15], [34.0, -6.25], [33.47, -6.03], [33.25, -5.5], [33.46, -5.0], [33.32, -4.68], [32.97, -4.53], [32.75, -4.0], [32.85, -3.75], [32.75, -3.5], [32.97, -2.97]]]]}, "2012-02-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.75, -4.5], [33.97, -3.97], [34.5, -3.75], [34.75, -3.85], [34.82, -3.82], [34.88, -3.7], [34.47, -3.53], [34.25, -3.0], [34.47, -2.47], [35.0, -2.25], [35.53, -2.47], [35.75, -3.0], [35.63, -3.3], [36.03, -3.47], [36.25, -4.0], [36.15, -4.25], [36.25, -4.5], [36.04, -5.0], [36.25, -5.5], [36.03, -6.03], [35.5, -6.25], [35.0, -6.04], [34.5, -6.25], [34.25, -6.15], [34.0, -6.25], [33.47, -6.03], [33.25, -5.5], [33.47, -4.97], [33.82, -4.82], [33.85, -4.75], [33.75, -4.5]]]]}, "2012-02-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.47, -3.97], [34.0, -3.75], [34.25, -3.85], [34.38, -3.8], [34.25, -3.5], [34.47, -2.97], [35.0, -2.75], [35.53, -2.97], [35.75, -3.5], [35.53, -4.03], [35.13, -4.2], [35.25, -4.5], [35.15, -4.75], [35.25, -5.0], [35.03, -5.53], [34.5, -5.75], [34.25, -5.65], [34.0, -5.75], [33.47, -5.53], [33.25, -5.0], [33.35, -4.75], [33.25, -4.5], [33.47, -3.97]]]]}, "2012-03-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.47, -3.97], [34.0, -3.75], [34.25, -3.85], [34.38, -3.8], [34.25, -3.5], [34.47, -2.97], [35.0, -2.75], [35.53, -2.97], [35.75, -3.5], [35.53, -4.03], [35.13, -4.2], [35.25, -4.5], [35.15, -4.75], [35.25, -5.0], [35.03, -5.53], [34.5, -5.75], [34.25, -5.65], [34.0, -5.75], [33.47, -5.53], [33.25, -5.0], [33.35, -4.75], [33.25, -4.5], [33.47, -3.97]]]]}, "2012-03-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.47, -3.97], [34.0, -3.75], [34.25, -3.85], [34.38, -3.8], [34.25, -3.5], [34.47, -2.97], [35.0, -2.75], [35.53, -2.97], [35.75, -3.5], [35.53, -4.03], [35.13, -4.2], [35.25, -4.5], [35.15, -4.75], [35.25, -5.0], [35.03, -5.53], [34.5, -5.75], [34.25, -5.65], [34.0, -5.75], [33.47, -5.53], [33.25, -5.0], [33.35, -4.75], [33.25, -4.5], [33.47, -3.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.620408928446693}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.5802976955226873}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.096054144640732, 19.419388117474966, 20.478598636472213, 19.740308226015145, 21.369241898810287, 18.896203037028158, 20.177891765748996]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.583925641860333, 17.306336763580703, 18.620608923466875, 18.08706446898003, 20.03470255601769, 17.76601847328942, 18.8463344371811]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.1344009546273317, -3.205651772770426, -2.118544076237302, -2.0587161301305628, -1.9796770512267359, -4.410965081113, -3.076702475849231]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.1398127713956114, -4.252694154995822, -2.9865553086237924, -2.7445321705623087, -2.092567719982412, -4.620408928446693, -3.200971540493015]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.436790247093824, -2.2071273945448295, -1.4381846782300522, -1.5237648178789107, -1.3070011750526647, -2.8404252835458466, -1.9202850760555639]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8716038532012427, -2.9610112549648906, -1.9374989274972876, -1.8784000364290572, -1.437382492384984, -3.1927399257179205, -2.1435317905661995]}}