A Review of NASA's 'Atmospheric Effects of Stratospheric Aircraft' Project (1999) / Chapter Skim
Currently Skimming:
1 Introduction
1 Introduction
Pages 5-7
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 5... ...
A major focus of concern has been that the emissions could significantly alter the Earth's protective ozone layer, which is concentrated near the altitude range in which HSCTs are expected to fly. More recently, attention has been given to the question of whether aircraft emissions could also affect the radiative balance of the atmosphere and thereby contribute significantly to global climate change.
|
From page 6... ...
Because the proposed HSCTs would at times operate subsonically in both the stratosphere and troposphere, and subsonic aircraft sometimes fly in the lower stratosphere, there are common issues important for assessing the atmospheric effects of both the proposed HSCT fleet and the existing subsonic fleet. For example, to properly assess the atmospheric effects of both types of aircraft, one needs a quantitative determination of the amount of mixing between stratosphere and troposphere, and between low and middle latitudes.
|
From page 7... ...
, especially its upcoming report on Aviation and the Global Atmosphere (IPCC, 1999~. These IPCC findings could influence international agreements such as the United Nations Climate Change Treaty, as well as national regulations.
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.