{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:51:50.779664", "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": "2023-Mar-28_to_2023-Apr-03_122.5_7.0"}, "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": 2023030000925}, "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": "March 28 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 03 2023"}, "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": 55229.84767665686}, "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": ["Philippines"]}, "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": ["Celebes Sea", "Sulu Sea"]}, "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": 7.0}, "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": 122.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "122.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 120.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 124.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 6.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 7.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[121.0, 8.25], [121.25, 8.15], [121.5, 8.25], [121.75, 8.15], [122.0, 8.25], [122.5, 8.04], [123.0, 8.25], [123.5, 8.04], [124.0, 8.25], [124.53, 8.03], [124.75, 7.5], [124.53, 6.97], [124.18, 6.82], [124.15, 6.75], [124.25, 6.5], [124.03, 5.97], [123.5, 5.75], [123.25, 5.85], [123.0, 5.75], [122.75, 5.85], [122.5, 5.75], [122.0, 5.96], [121.5, 5.75], [121.25, 5.85], [121.0, 5.75], [120.75, 5.85], [120.5, 5.75], [120.25, 5.85], [120.0, 5.75], [119.47, 5.97], [119.25, 6.5], [119.47, 7.03], [119.82, 7.18], [119.97, 7.53], [120.32, 7.68], [120.47, 8.03], [121.0, 8.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-03-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[121.97, 7.53], [122.5, 7.75], [123.03, 7.53], [123.25, 7.0], [123.03, 6.47], [122.5, 6.25], [121.97, 6.47], [121.75, 7.0], [121.97, 7.53]]]]}, "2023-03-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[121.97, 7.53], [122.5, 7.75], [123.03, 7.53], [123.25, 7.0], [123.03, 6.47], [122.5, 6.25], [121.97, 6.47], [121.75, 7.0], [121.97, 7.53]]]]}, "2023-03-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.97, 7.53], [120.32, 7.68], [120.47, 8.03], [121.0, 8.25], [121.53, 8.03], [121.68, 7.68], [122.0, 7.54], [122.5, 7.75], [123.03, 7.53], [123.25, 7.0], [123.03, 6.47], [122.5, 6.25], [122.2, 6.37], [122.03, 5.97], [121.5, 5.75], [121.25, 5.85], [121.0, 5.75], [120.75, 5.85], [120.5, 5.75], [120.25, 5.85], [120.0, 5.75], [119.47, 5.97], [119.25, 6.5], [119.47, 7.03], [119.82, 7.18], [119.97, 7.53]]]]}, "2023-03-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.97, 7.53], [120.32, 7.68], [120.47, 8.03], [121.0, 8.25], [121.25, 8.15], [121.5, 8.25], [121.75, 8.15], [122.0, 8.25], [122.5, 8.04], [123.0, 8.25], [123.53, 8.03], [123.75, 7.5], [123.65, 7.25], [123.68, 7.18], [124.03, 7.03], [124.25, 6.5], [124.03, 5.97], [123.5, 5.75], [123.25, 5.85], [123.0, 5.75], [122.75, 5.85], [122.5, 5.75], [122.0, 5.96], [121.5, 5.75], [121.25, 5.85], [121.0, 5.75], [120.75, 5.85], [120.5, 5.75], [120.25, 5.85], [120.0, 5.75], [119.47, 5.97], [119.25, 6.5], [119.47, 7.03], [119.82, 7.18], [119.97, 7.53]]]]}, "2023-04-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.97, 7.53], [120.32, 7.68], [120.47, 8.03], [121.0, 8.25], [121.25, 8.15], [121.5, 8.25], [121.75, 8.15], [122.0, 8.25], [122.5, 8.04], [123.0, 8.25], [123.5, 8.04], [124.0, 8.25], [124.53, 8.03], [124.75, 7.5], [124.53, 6.97], [124.18, 6.82], [124.15, 6.75], [124.25, 6.5], [124.03, 5.97], [123.5, 5.75], [123.25, 5.85], [123.0, 5.75], [122.75, 5.85], [122.5, 5.75], [122.0, 5.96], [121.5, 5.75], [121.25, 5.85], [121.0, 5.75], [120.75, 5.85], [120.5, 5.75], [120.25, 5.85], [120.0, 5.75], [119.47, 5.97], [119.25, 6.5], [119.47, 7.03], [119.82, 7.18], [119.97, 7.53]]]]}, "2023-04-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.97, 7.53], [120.32, 7.68], [120.47, 8.03], [121.0, 8.25], [121.25, 8.15], [121.5, 8.25], [121.75, 8.15], [122.0, 8.25], [122.5, 8.04], [123.0, 8.25], [123.5, 8.04], [124.0, 8.25], [124.53, 8.03], [124.75, 7.5], [124.53, 6.97], [124.18, 6.82], [124.15, 6.75], [124.25, 6.5], [124.03, 5.97], [123.5, 5.75], [123.25, 5.85], [123.0, 5.75], [122.75, 5.85], [122.5, 5.75], [122.0, 5.96], [121.5, 5.75], [121.25, 5.85], [121.0, 5.75], [120.75, 5.85], [120.5, 5.75], [120.25, 5.85], [120.0, 5.75], [119.47, 5.97], [119.25, 6.5], [119.47, 7.03], [119.82, 7.18], [119.97, 7.53]]]]}, "2023-04-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[123.47, 8.03], [124.0, 8.25], [124.53, 8.03], [124.75, 7.5], [124.53, 6.97], [124.18, 6.82], [124.03, 6.47], [123.5, 6.25], [122.97, 6.47], [122.75, 7.0], [122.97, 7.53], [123.32, 7.68], [123.47, 8.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.7085608899394629}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.8412591543594011}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.395031713402204, 26.65583554045628, 26.510726527123097, 26.58426689218726, 26.37404115529887, 26.2473026959849, 26.502659861318534]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.395031713402204, 26.65583554045628, 26.23029506713567, 25.79550523724032, 25.53783522825887, 25.57271196126902, 26.314930131416304]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.9092252193001968, -0.65493178492261, -0.6823141329922843, -0.6577914921562567, -0.8934223328081335, -1.04080332559205, -0.8180675532521491]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.9092252193001968, -0.65493178492261, -0.7828326846644131, -0.9279049804301849, -1.287786200704602, -1.7085608899394629, -0.8775305416931474]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8216412694319313, -1.3395112524694888, -1.6769765738371956, -1.502323717461283, -2.0622358487279056, -2.3577342721799934, -1.6549212257013366]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8216412694319313, -1.3395112524694888, -2.0842877366720707, -1.9675471011178904, -2.66380616177198, -3.4186095466495363, -1.760715783884906]}}