{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:26:24.594736", "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": "2021-Jul-03_to_2021-Jul-12_32.5_-6.0"}, "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": 2021070000234}, "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 03 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 12 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 10}, "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": 107679.9528280481}, "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": -6.0}, "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": 32.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "32.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 30.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 33.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -7.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -3.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-07-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.75, -6.0], [30.97, -5.47], [31.32, -5.32], [31.35, -5.25], [31.25, -5.0], [31.47, -4.47], [31.82, -4.32], [31.97, -3.97], [32.5, -3.75], [32.75, -3.85], [33.0, -3.75], [33.53, -3.97], [33.75, -4.5], [33.65, -4.75], [33.75, -5.0], [33.65, -5.25], [33.75, -5.5], [33.65, -5.75], [33.75, -6.0], [33.65, -6.25], [33.75, -6.5], [33.53, -7.03], [33.0, -7.25], [32.75, -7.15], [32.5, -7.25], [32.25, -7.15], [32.0, -7.25], [31.47, -7.03], [31.32, -6.68], [30.97, -6.53], [30.75, -6.0]]]]}, "2021-07-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.75, -6.0], [30.97, -5.47], [31.32, -5.32], [31.35, -5.25], [31.32, -5.18], [30.97, -5.03], [30.75, -4.5], [30.97, -3.97], [31.5, -3.75], [31.75, -3.85], [31.82, -3.82], [31.85, -3.75], [31.75, -3.5], [31.97, -2.97], [32.5, -2.75], [33.03, -2.97], [33.18, -3.32], [33.53, -3.47], [33.75, -4.0], [33.65, -4.25], [33.75, -4.5], [33.65, -4.75], [33.75, -5.0], [33.65, -5.25], [33.75, -5.5], [33.65, -5.75], [33.75, -6.0], [33.65, -6.25], [33.75, -6.5], [33.53, -7.03], [33.13, -7.2], [33.25, -7.5], [33.03, -8.03], [32.5, -8.25], [31.97, -8.03], [31.75, -7.5], [31.88, -7.2], [31.47, -7.03], [31.32, -6.68], [30.97, -6.53], [30.75, -6.0]]]]}, "2021-07-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.75, -5.5], [29.97, -4.97], [30.32, -4.82], [30.47, -4.47], [30.82, -4.32], [30.97, -3.97], [31.5, -3.75], [31.75, -3.85], [31.82, -3.82], [31.85, -3.75], [31.75, -3.5], [31.97, -2.97], [32.5, -2.75], [33.03, -2.97], [33.18, -3.32], [33.53, -3.47], [33.75, -4.0], [33.65, -4.25], [33.75, -4.5], [33.65, -4.75], [33.75, -5.0], [33.65, -5.25], [33.75, -5.5], [33.65, -5.75], [33.75, -6.0], [33.65, -6.25], [33.75, -6.5], [33.53, -7.03], [33.18, -7.18], [33.15, -7.25], [33.25, -7.5], [33.03, -8.03], [32.5, -8.25], [31.97, -8.03], [31.82, -7.68], [31.47, -7.53], [31.32, -7.18], [30.97, -7.03], [30.82, -6.68], [30.47, -6.53], [30.32, -6.18], [29.97, -6.03], [29.75, -5.5]]]]}, "2021-07-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.97, -4.97], [30.32, -4.82], [30.35, -4.75], [30.25, -4.5], [30.35, -4.25], [30.25, -4.0], [30.47, -3.47], [31.0, -3.25], [31.5, -3.46], [31.82, -3.32], [31.97, -2.97], [32.5, -2.75], [33.03, -2.97], [33.18, -3.32], [33.53, -3.47], [33.75, -4.0], [33.65, -4.25], [33.75, -4.5], [33.65, -4.75], [33.75, -5.0], [33.65, -5.25], [33.75, -5.5], [33.65, -5.75], [33.75, -6.0], [33.65, -6.25], [33.75, -6.5], [33.53, -7.03], [33.18, -7.18], [33.15, -7.25], [33.25, -7.5], [33.03, -8.03], [32.5, -8.25], [31.97, -8.03], [31.82, -7.68], [31.47, -7.53], [31.32, -7.18], [30.97, -7.03], [30.82, -6.68], [30.75, -6.65], [30.5, -6.75], [29.97, -6.53], [29.75, -6.0], [29.85, -5.75], [29.75, -5.5], [29.97, -4.97]]]]}, "2021-07-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.97, -4.97], [30.32, -4.82], [30.35, -4.75], [30.25, -4.5], [30.35, -4.25], [30.25, -4.0], [30.47, -3.47], [31.0, -3.25], [31.5, -3.46], [31.82, -3.32], [31.97, -2.97], [32.5, -2.75], [33.03, -2.97], [33.18, -3.32], [33.53, -3.47], [33.75, -4.0], [33.65, -4.25], [33.75, -4.5], [33.65, -4.75], [33.75, -5.0], [33.65, -5.25], [33.75, -5.5], [33.65, -5.75], [33.75, -6.0], [33.65, -6.25], [33.75, -6.5], [33.53, -7.03], [33.18, -7.18], [33.03, -7.53], [32.5, -7.75], [32.25, -7.65], [32.0, -7.75], [31.47, -7.53], [31.32, -7.18], [30.97, -7.03], [30.82, -6.68], [30.75, -6.65], [30.5, -6.75], [29.97, -6.53], [29.75, -6.0], [29.85, -5.75], [29.75, -5.5], [29.97, -4.97]]]]}, "2021-07-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.97, -4.97], [30.32, -4.82], [30.35, -4.75], [30.25, -4.5], [30.35, -4.25], [30.25, -4.0], [30.47, -3.47], [31.0, -3.25], [31.5, -3.46], [31.82, -3.32], [31.97, -2.97], [32.5, -2.75], [33.03, -2.97], [33.25, -3.5], [33.15, -3.75], [33.18, -3.82], [33.53, -3.97], [33.75, -4.5], [33.65, -4.75], [33.75, -5.0], [33.65, -5.25], [33.75, -5.5], [33.65, -5.75], [33.75, -6.0], [33.65, -6.25], [33.75, -6.5], [33.53, -7.03], [33.18, -7.18], [33.03, -7.53], [32.5, -7.75], [32.25, -7.65], [32.18, -7.68], [32.03, -8.03], [31.5, -8.25], [30.97, -8.03], [30.75, -7.5], [30.96, -7.0], [30.82, -6.68], [30.75, -6.65], [30.5, -6.75], [29.97, -6.53], [29.75, -6.0], [29.85, -5.75], [29.75, -5.5], [29.97, -4.97]]]]}, "2021-07-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.25, -6.0], [31.47, -5.47], [31.82, -5.32], [31.97, -4.97], [32.5, -4.75], [33.03, -4.97], [33.18, -5.32], [33.53, -5.47], [33.75, -6.0], [33.53, -6.53], [33.18, -6.68], [33.03, -7.03], [32.5, -7.25], [32.07, -7.07], [32.25, -7.5], [32.03, -8.03], [31.5, -8.25], [30.97, -8.03], [30.75, -7.5], [30.97, -6.97], [31.5, -6.75], [31.93, -6.93], [31.82, -6.68], [31.47, -6.53], [31.25, -6.0]]]]}, "2021-07-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.47, -4.97], [31.0, -4.75], [31.5, -4.96], [32.0, -4.75], [32.25, -4.85], [32.5, -4.75], [33.03, -4.97], [33.18, -5.32], [33.53, -5.47], [33.75, -6.0], [33.53, -6.53], [33.18, -6.68], [33.03, -7.03], [32.5, -7.25], [32.25, -7.15], [32.13, -7.2], [32.25, -7.5], [32.03, -8.03], [31.5, -8.25], [30.97, -8.03], [30.75, -7.5], [30.97, -6.97], [31.38, -6.8], [31.32, -6.68], [31.25, -6.65], [31.0, -6.75], [30.47, -6.53], [30.25, -6.0], [30.35, -5.75], [30.25, -5.5], [30.47, -4.97]]]]}, "2021-07-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.47, -4.97], [31.0, -4.75], [31.5, -4.96], [32.0, -4.75], [32.25, -4.85], [32.5, -4.75], [33.03, -4.97], [33.18, -5.32], [33.53, -5.47], [33.75, -6.0], [33.53, -6.53], [33.18, -6.68], [33.03, -7.03], [32.5, -7.25], [32.25, -7.15], [32.13, -7.2], [32.25, -7.5], [32.03, -8.03], [31.5, -8.25], [30.97, -8.03], [30.75, -7.5], [30.97, -6.97], [31.38, -6.8], [31.32, -6.68], [31.25, -6.65], [31.0, -6.75], [30.47, -6.53], [30.25, -6.0], [30.35, -5.75], [30.25, -5.5], [30.47, -4.97]]]]}, "2021-07-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.47, -4.97], [31.0, -4.75], [31.5, -4.96], [32.0, -4.75], [32.25, -4.85], [32.5, -4.75], [33.03, -4.97], [33.25, -5.5], [33.15, -5.75], [33.25, -6.0], [33.15, -6.25], [33.25, -6.5], [33.03, -7.03], [32.5, -7.25], [32.25, -7.15], [32.13, -7.2], [32.25, -7.5], [32.03, -8.03], [31.5, -8.25], [30.97, -8.03], [30.75, -7.5], [30.97, -6.97], [31.38, -6.8], [31.32, -6.68], [31.25, -6.65], [31.0, -6.75], [30.47, -6.53], [30.25, -6.0], [30.35, -5.75], [30.25, -5.5], [30.47, -4.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.9566993792527683}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.7386691802282146}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.652231093667012, 20.567747583109508, 20.14929366972376, 20.01929650838531, 20.192032994669034, 20.083602399534414, 20.250905461480386, 19.845613803129766, 19.42828180825569, 20.083240734900983]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.196784756904833, 18.114009237598736, 18.050523826838173, 18.279817238882572, 18.549974823370633, 18.32295164312859, 18.495894658648638, 18.07906388378285, 18.035605160707917, 18.38116687291921]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6341588188887195, -1.6687800833273194, -1.780902441733296, -1.8326739963229803, -1.6993230639312846, -1.6912177257581256, -1.4549414146422446, -1.7732305824785974, -2.2036736685105685, -1.5030318297886254]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.125530547597748, -2.2517988322575775, -2.9566993792527683, -2.8036696414989706, -2.4434399775368547, -2.45633601790945, -1.667583105116023, -2.251884786972198, -2.7010777610247487, -1.714798972399251]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.694078587840655, -1.73177025667714, -1.8630190561998348, -1.9464094005293555, -1.819973446658697, -1.8313033237926404, -1.4611118091979585, -1.8710882115037264, -2.3055719576744056, -1.5537099647684476]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.023461313106744, -2.1221591153442882, -2.7404044150819167, -2.720978903202113, -2.5174308926467472, -2.328673168162573, -1.5772728769449362, -2.1860094096314304, -2.654558264137001, -1.8821138631770633]}}