A numerical study of tropical cross-tropopause transport by convective overshoots Export

@article{citeulike:1430622, abstract = {Observations obtained during the Tropical Convection, Cirrus and Nitrogen Oxides (TROCCINOX) golden day have revealed the presence of ice particles up to 410K (18.2 km) 2 km above the local tropopause. The case was investigated using a three-dimensional quadruply nested non-hydrostatic simulation and Meteosat Second Generation (MSG) observations. The simulation reproduced the measurements along the flight track fairly well. A reasonable agreement with MSG observations was also achieved: the 10.8-μm brightness temperature (BT) minimum of 187K was reproduced (a value 6K colder than the environmental coldpoint temperature) as was the positive BT difference between the 6.2- and 10.8-μm bands, an overshoot signature. The simulation produced several overshooting plumes up to 410K yielding an upward transport of water vapour of a few tons per second across the tropical tropopause. The estimated mass flux agrees with those derived from over tracer budgets, indicating that convection transports mass across the tropopause.}, author = {Chaboureau, J-P and Cammas, J-P and Duron, J. and Mascart, P. J. and Sitnikov, N. M. and Voessing, H. J.}, citeulike-article-id = {1430622}, citeulike-linkout-0 = {http://www.atmos-chem-phys.net/7/1731/2007/acp-7-1731-2007.html}, journal = {Atmospheric Chemistry and Physics}, keywords = {brightness, temperature, troccinox, tropopause}, pages = {1731--1740}, posted-at = {2007-07-03 12:59:12}, priority = {0}, title = {A numerical study of tropical cross-tropopause transport by convective overshoots}, url = {http://www.atmos-chem-phys.net/7/1731/2007/acp-7-1731-2007.html}, volume = {7}, year = {2007} }

TY - JOUR ID - citeulike:1430622 L3 - citeulike-article-id:1430622 N2 - Observations obtained during the Tropical Convection, Cirrus and Nitrogen Oxides (TROCCINOX) golden day have revealed the presence of ice particles up to 410K (18.2 km) 2 km above the local tropopause. The case was investigated using a three-dimensional quadruply nested non-hydrostatic simulation and Meteosat Second Generation (MSG) observations. The simulation reproduced the measurements along the flight track fairly well. A reasonable agreement with MSG observations was also achieved: the 10.8-μm brightness temperature (BT) minimum of 187K was reproduced (a value 6K colder than the environmental coldpoint temperature) as was the positive BT difference between the 6.2- and 10.8-μm bands, an overshoot signature. The simulation produced several overshooting plumes up to 410K yielding an upward transport of water vapour of a few tons per second across the tropical tropopause. The estimated mass flux agrees with those derived from over tracer budgets, indicating that convection transports mass across the tropopause. JF - Atmospheric Chemistry and Physics EP - 1740 TI - A numerical study of tropical cross-tropopause transport by convective overshoots VL - 7 SP - 1731 KW - brightness KW - temperature KW - troccinox KW - tropopause AU - Chaboureau, J-P AU - Cammas, J-P AU - Duron, J AU - Mascart, PJ AU - Sitnikov, NM AU - Voessing, HJ PY - 2007/// UR - http://www.atmos-chem-phys.net/7/1731/2007/acp-7-1731-2007.html ER -