{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:13:09.103353", "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": "2018-Jul-03_to_2018-Jul-06_54.0_31.0"}, "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": 2018070000254}, "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 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 06 2018"}, "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": 50504.71481635512}, "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": ["Iran"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.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": 31.0}, "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": 54.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "54.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 52.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 56.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 29.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 31.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-07-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[53.47, 30.97], [53.25, 31.5], [53.47, 32.03], [54.0, 32.25], [54.25, 32.15], [54.5, 32.25], [55.03, 32.03], [55.25, 31.5], [55.07, 31.07], [55.5, 31.25], [56.03, 31.03], [56.25, 30.5], [56.03, 29.97], [55.5, 29.75], [54.97, 29.97], [54.75, 30.5], [54.93, 30.93], [54.5, 30.75], [54.25, 30.85], [54.0, 30.75], [53.47, 30.97]]]]}, "2018-07-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[52.47, 32.03], [53.0, 32.25], [53.25, 32.15], [53.5, 32.25], [53.75, 32.15], [54.0, 32.25], [54.25, 32.15], [54.5, 32.25], [55.03, 32.03], [55.18, 31.68], [55.25, 31.65], [55.5, 31.75], [55.75, 31.65], [56.0, 31.75], [56.53, 31.53], [56.75, 31.0], [56.65, 30.75], [56.75, 30.5], [56.54, 30.0], [56.75, 29.5], [56.53, 28.97], [56.0, 28.75], [55.75, 28.85], [55.5, 28.75], [54.97, 28.97], [54.82, 29.32], [54.75, 29.35], [54.5, 29.25], [53.97, 29.47], [53.82, 29.82], [53.47, 29.97], [53.32, 30.32], [53.25, 30.35], [53.0, 30.25], [52.47, 30.47], [52.25, 31.0], [52.35, 31.25], [52.25, 31.5], [52.47, 32.03]]]]}, "2018-07-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[52.47, 32.03], [53.0, 32.25], [53.25, 32.15], [53.5, 32.25], [53.75, 32.15], [54.0, 32.25], [54.25, 32.15], [54.5, 32.25], [55.03, 32.03], [55.18, 31.68], [55.25, 31.65], [55.5, 31.75], [55.75, 31.65], [56.0, 31.75], [56.53, 31.53], [56.75, 31.0], [56.65, 30.75], [56.75, 30.5], [56.54, 30.0], [56.75, 29.5], [56.53, 28.97], [56.0, 28.75], [55.75, 28.85], [55.5, 28.75], [54.97, 28.97], [54.82, 29.32], [54.75, 29.35], [54.5, 29.25], [53.97, 29.47], [53.82, 29.82], [53.47, 29.97], [53.32, 30.32], [53.25, 30.35], [53.0, 30.25], [52.47, 30.47], [52.25, 31.0], [52.35, 31.25], [52.25, 31.5], [52.47, 32.03]]]]}, "2018-07-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[52.47, 32.03], [53.0, 32.25], [53.25, 32.15], [53.5, 32.25], [54.03, 32.03], [54.18, 31.68], [54.5, 31.54], [55.0, 31.75], [55.25, 31.65], [55.5, 31.75], [55.75, 31.65], [56.0, 31.75], [56.53, 31.53], [56.75, 31.0], [56.65, 30.75], [56.75, 30.5], [56.54, 30.0], [56.75, 29.5], [56.53, 28.97], [56.0, 28.75], [55.75, 28.85], [55.5, 28.75], [54.97, 28.97], [54.82, 29.32], [54.75, 29.35], [54.5, 29.25], [53.97, 29.47], [53.82, 29.82], [53.47, 29.97], [53.32, 30.32], [53.25, 30.35], [53.0, 30.25], [52.47, 30.47], [52.25, 31.0], [52.35, 31.25], [52.25, 31.5], [52.47, 32.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.192436121599883}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.1358075409085986}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.668779341491586, 27.085654310261134, 26.84518555530269, 28.331290976252546]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.676991491596368, 23.388238150904215, 23.747838014830677, 26.095759772681106]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.4187785357866196, -3.2797144689740985, -3.642517146708901, -2.497643345403329]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.5505894336041592, -4.0909968579321685, -4.192436121599883, -3.3699123824333697]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4220920135609403, -2.202737631045541, -2.4490668225116208, -1.6764140010300759]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4587070893323113, -2.576664760340583, -2.8589158497664586, -2.009937265839928]}}