Cooperative Atmospheric Studies Aboard the University of Washington

在1999年和2000年，华盛顿大学的云和气溶胶研究小组（CARG）将通过在马绍尔群岛和非洲南部的实地项目中操作其Convair-580研究飞机，参与美国宇航局资助的两个项目。NASA实验的主要目的是将云和气溶胶特性的空中、现场测量结果与卫星遥感测量结果进行比较。利用NASA项目提供的机会，CARG将在Convair-580往返于非洲南部实地和地点的途中，进行由NSF支持的额外实验。1999年9月，从马绍尔群岛返回后，飞机将在东京附近停留一周左右，对气溶胶粒子的物理、化学和光学性质随海拔的变化进行一系列测量。目的是提供足够全面的数据，以便比较计算和测量的气溶胶对太阳辐射的影响（所谓的辐射“封闭”计算）。第二次NSF实验将在2000年进行，届时CARG和研究飞机将参加SAFARI-2000。重点将放在南部非洲海岸外大西洋上空被污染的空气上。测量将记录气溶胶的物理和化学性质的演变，并像日本早期的实验一样测量垂直剖面。与霍布斯博士合作进行这些实验的还有其他几位研究人员，他们将带来用于大气测量的新仪器。该计划是在美国宇航局前往日本和南部非洲之前，在西雅图地区周围的飞行中评估仪器的性能。

In 1999 and 2000, the Cloud and Aerosol Research Group (CARG) of the University of Washington will participate in two NASA-funded projects by operating its Convair-580 research aircraft in field projects in the Marshall Islands and in Southern Africa. The primary purpose of the NASA experiments is to compare airborne, in situ measurements of cloud and aerosol properties with remote sensing measurements from satellites. Taking advantage of the opportunities offered by the NASA projects, CARG will undertake additional experiments supported by NSF while the Convair-580 is in transit to and from the field sites and on location in Southern Africa. In September 1999, on the return from the Marshall Islands, the airplane will be based near Tokyo for about a week to carry out several series of measurements of the variation with altitude of the physical, chemical, and optical properties of aerosol particles. The intention is to provide data that are comprehensive enough to permit comparisons of computed and measured effects of the aerosols on solar radiation (so-called radiative "closure" calculations). The second NSF experiments will be in 2000, when CARG and the research aircraft will be participating in SAFARI-2000. The focus will be on the pall of polluted air over the Atlantic Ocean off the coast of Southern Africa. Measurements will be taken to document the evolution of the physical and chemical properties of the aerosols and to measure vertical profiles as in the earlier Japanese experiments. Collaborating with Dr. Hobbs in these experiments will be several other investigators who will bring new instruments for atmospheric measurements. The plan is to evaluate the performance of the instruments in flights around the Seattle area before the NASA missions to Japan and Southern Africa.