Definition

1. Noun (Meteorology):

   • Advection: The horizontal transfer of an atmospheric property (such as heat, humidity, or pollution) by the wind.

2. Noun (Compound: "tầng bình lưu"):

   • Stratosphere: The layer of the Earth's atmosphere situated above the troposphere and below the mesosphere, characterized by a stable temperature structure and containing the ozone layer.

Usage Examples

• Noun (Advection):

  • Gió mùa đông bắc gây ra hiện tượng bình lưu không khí lạnh. (The northeast monsoon causes the advection of cold air.)
  • Sự bình lưu độ ẩm từ biển vào là nguyên nhân gây mưa. (The advection of moisture from the sea is the cause of the rain.)

• Noun (Stratosphere):

  • Tầng bình lưu nằm ở độ cao từ khoảng 10 đến 50 km. (The stratosphere is located at an altitude from about 10 to 50 km.)
  • Máy bay phản lực thường bay ở phần dưới của tầng bình lưu. (Jet aircraft often fly in the lower part of the stratosphere.)

Advanced Usage

• "Bình lưu nhiệt": thermal advection.

  • Bình lưu nhiệt ấm thường dẫn đến thời tiết ổn định. (Warm thermal advection often leads to stable weather.)

• "Bình lưu xoáy": vorticity advection.

  • Dự báo viên phân tích bình lưu xoáy để xác định sự phát triển của áp thấp. (Forecasters analyze vorticity advection to determine low-pressure development.)

Variants and Related Words

• Tầng bình lưu (n): stratosphere. This is the most common compound form.
• Bình lưu ẩm (n): moisture advection.
• Bình lưu khí (n): air advection.

Synonyms

• Advection: horizontal transport, wind-driven transport.
• Stratosphere: upper atmosphere (in a general, non-technical context).

Notes on Usage

• As a standalone term in scientific Vietnamese, "bình lưu" almost exclusively refers to the meteorological concept of advection.
• The meaning of stratosphere is almost always conveyed by the full compound noun "tầng bình lưu". Using "bình lưu" alone to mean "stratosphere" is incomplete and can be ambiguous without clear context.

1. (khtượng) Advection
   • Tầng bình lưu
     Stratosphere