{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:19:00.778439", "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": "2020-Feb-21_to_2020-Feb-29_87.0_42.5"}, "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": 2020020002105}, "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 21 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 29 2020"}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 58883.178327551745}, "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": ["China"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.C.Asia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": []}, "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": 42.5}, "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": 87.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "87.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 84.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 88.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 41.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 44.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-02-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[83.97, 44.53], [84.5, 44.75], [84.75, 44.65], [85.0, 44.75], [85.25, 44.65], [85.5, 44.75], [86.03, 44.53], [86.25, 44.0], [86.13, 43.7], [86.25, 43.65], [86.32, 43.68], [86.47, 44.03], [87.0, 44.25], [87.53, 44.03], [87.68, 43.68], [88.03, 43.53], [88.25, 43.0], [88.03, 42.47], [87.68, 42.32], [87.53, 41.97], [87.0, 41.75], [86.47, 41.97], [86.32, 42.32], [86.25, 42.35], [86.18, 42.32], [86.03, 41.97], [85.5, 41.75], [85.25, 41.85], [85.0, 41.75], [84.47, 41.97], [84.32, 42.32], [83.97, 42.47], [83.75, 43.0], [83.96, 43.5], [83.75, 44.0], [83.97, 44.53]]]]}, "2020-02-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[83.96, 43.5], [83.75, 44.0], [83.97, 44.53], [84.5, 44.75], [84.75, 44.65], [85.0, 44.75], [85.25, 44.65], [85.5, 44.75], [85.75, 44.65], [86.0, 44.75], [86.25, 44.65], [86.5, 44.75], [87.03, 44.53], [87.18, 44.18], [87.5, 44.04], [88.0, 44.25], [88.53, 44.03], [88.75, 43.5], [88.53, 42.97], [88.18, 42.82], [88.15, 42.75], [88.25, 42.5], [88.03, 41.97], [87.5, 41.75], [87.25, 41.85], [87.0, 41.75], [86.75, 41.85], [86.5, 41.75], [86.25, 41.85], [86.0, 41.75], [85.75, 41.85], [85.5, 41.75], [85.25, 41.85], [85.0, 41.75], [84.75, 41.85], [84.5, 41.75], [83.97, 41.97], [83.75, 42.5], [83.85, 42.75], [83.75, 43.0], [83.96, 43.5]]]]}, "2020-02-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[83.96, 43.5], [83.75, 44.0], [83.97, 44.53], [84.5, 44.75], [84.75, 44.65], [85.0, 44.75], [85.25, 44.65], [85.5, 44.75], [85.75, 44.65], [86.0, 44.75], [86.25, 44.65], [86.5, 44.75], [87.03, 44.53], [87.18, 44.18], [87.5, 44.04], [88.0, 44.25], [88.53, 44.03], [88.75, 43.5], [88.53, 42.97], [88.18, 42.82], [88.15, 42.75], [88.25, 42.5], [88.03, 41.97], [87.5, 41.75], [87.25, 41.85], [87.0, 41.75], [86.75, 41.85], [86.68, 41.82], [86.53, 41.47], [86.0, 41.25], [85.5, 41.46], [85.0, 41.25], [84.47, 41.47], [84.32, 41.82], [83.97, 41.97], [83.75, 42.5], [83.85, 42.75], [83.75, 43.0], [83.96, 43.5]]]]}, "2020-02-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[83.96, 43.5], [83.75, 44.0], [83.97, 44.53], [84.5, 44.75], [84.75, 44.65], [85.0, 44.75], [85.25, 44.65], [85.5, 44.75], [85.75, 44.65], [86.0, 44.75], [86.25, 44.65], [86.5, 44.75], [87.03, 44.53], [87.25, 44.0], [87.07, 43.57], [87.32, 43.68], [87.47, 44.03], [88.0, 44.25], [88.53, 44.03], [88.75, 43.5], [88.53, 42.97], [88.18, 42.82], [88.15, 42.75], [88.25, 42.5], [88.03, 41.97], [87.5, 41.75], [87.25, 41.85], [87.0, 41.75], [86.75, 41.85], [86.68, 41.82], [86.53, 41.47], [86.0, 41.25], [85.5, 41.46], [85.0, 41.25], [84.47, 41.47], [84.32, 41.82], [83.97, 41.97], [83.75, 42.5], [83.85, 42.75], [83.75, 43.0], [83.96, 43.5]]]]}, "2020-02-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[83.96, 43.5], [83.75, 44.0], [83.97, 44.53], [84.5, 44.75], [84.75, 44.65], [85.0, 44.75], [85.53, 44.53], [85.75, 44.0], [85.54, 43.5], [85.68, 43.18], [85.75, 43.15], [86.0, 43.25], [86.5, 43.04], [87.0, 43.25], [87.53, 43.03], [87.75, 42.5], [87.53, 41.97], [87.0, 41.75], [86.7, 41.88], [86.53, 41.47], [86.0, 41.25], [85.5, 41.46], [85.0, 41.25], [84.47, 41.47], [84.32, 41.82], [83.97, 41.97], [83.75, 42.5], [83.85, 42.75], [83.75, 43.0], [83.96, 43.5]]]]}, "2020-02-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[84.38, 43.3], [83.97, 43.47], [83.75, 44.0], [83.97, 44.53], [84.5, 44.75], [84.75, 44.65], [85.0, 44.75], [85.53, 44.53], [85.75, 44.0], [85.54, 43.5], [85.7, 43.13], [86.0, 43.25], [86.5, 43.04], [87.0, 43.25], [87.53, 43.03], [87.75, 42.5], [87.53, 41.97], [87.0, 41.75], [86.57, 41.93], [86.75, 41.5], [86.53, 40.97], [86.0, 40.75], [85.47, 40.97], [85.32, 41.32], [85.25, 41.35], [85.0, 41.25], [84.75, 41.35], [84.5, 41.25], [83.97, 41.47], [83.75, 42.0], [83.97, 42.53], [84.38, 42.7], [84.25, 43.0], [84.38, 43.3]]]]}, "2020-02-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[84.38, 43.3], [83.97, 43.47], [83.75, 44.0], [83.97, 44.53], [84.5, 44.75], [84.75, 44.65], [85.0, 44.75], [85.53, 44.53], [85.75, 44.0], [85.54, 43.5], [85.7, 43.13], [86.0, 43.25], [86.5, 43.04], [87.0, 43.25], [87.53, 43.03], [87.75, 42.5], [87.53, 41.97], [87.0, 41.75], [86.57, 41.93], [86.75, 41.5], [86.53, 40.97], [86.0, 40.75], [85.47, 40.97], [85.32, 41.32], [85.25, 41.35], [85.0, 41.25], [84.75, 41.35], [84.5, 41.25], [83.97, 41.47], [83.75, 42.0], [83.97, 42.53], [84.38, 42.7], [84.25, 43.0], [84.38, 43.3]]]]}, "2020-02-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[83.97, 41.47], [83.75, 42.0], [83.97, 42.53], [84.5, 42.75], [84.75, 42.65], [85.0, 42.75], [85.25, 42.65], [85.32, 42.68], [85.47, 43.03], [86.0, 43.25], [86.5, 43.04], [87.0, 43.25], [87.53, 43.03], [87.75, 42.5], [87.53, 41.97], [87.0, 41.75], [86.57, 41.93], [86.75, 41.5], [86.53, 40.97], [86.0, 40.75], [85.47, 40.97], [85.32, 41.32], [85.25, 41.35], [85.0, 41.25], [84.75, 41.35], [84.5, 41.25], [83.97, 41.47]]]]}, "2020-02-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[87.0, 43.25], [87.53, 43.03], [87.75, 42.5], [87.53, 41.97], [87.0, 41.75], [86.47, 41.97], [86.25, 42.5], [86.47, 43.03], [87.0, 43.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 10.316442669117464}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.4270563519709665}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-7.077222769706168, -4.529652662843148, -5.288891679441804, -4.8180608354578, -5.710046442884277, -1.1991995796400374, 1.143331663089782, 4.110381438830302, -4.407020345017315]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-2.8086278119349686, -0.024094139645001178, 3.14058157702965, 4.3128449465426115, 4.503732308128804, 5.98538830789613, 6.80791827544374, 8.607946638797443, -4.407020345017315]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.01847631325892, 7.840828437531489, 6.066969915232912, 5.764788277201563, 5.2186888677379155, 5.13137713021336, 7.183963774321392, 6.916021088281421, 5.19251274089703]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [9.867063703258395, 10.316442669117464, 7.658139898524553, 7.095005569794125, 6.096401092385975, 6.539645739048069, 9.768224262538013, 7.687001524960976, 5.19251274089703]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.757463704409379, 2.0051879017330725, 1.5820608915482608, 1.5385291074138459, 1.416281353124791, 1.495793248150454, 2.092965983277894, 2.180041805836933, 1.5146234748743208]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.460601285959931, 2.593226406058054, 2.0587685407344813, 1.8114555352786605, 1.583468321258635, 1.7141028583918594, 2.6118557677970595, 2.299397619407265, 1.5146234748743208]}}