địa xạ kế
Definition
- Noun:
- Pygeometer: An instrument used in meteorology and environmental science to measure the effective terrestrial radiation, or the net longwave radiation emitted by the Earth's surface into the atmosphere.
Usage Examples
- Noun:
- Các nhà khoa học sử dụng địa xạ kế để nghiên cứu cân bằng bức xạ của Trái Đất. (Scientists use a pygeometer to study the Earth's radiation balance.)
- Số liệu từ địa xạ kế rất quan trọng cho các mô hình khí hậu. (Data from the pygeometer is crucial for climate models.)
Advanced Usage
- The term is highly specialized and used almost exclusively in technical contexts within meteorology, climatology, and environmental physics. It is not used in everyday conversation.
Variants and Related Words
- Pyradiometer (n): A more general instrument for measuring both solar and terrestrial radiation.
- Net radiometer (n): An instrument that measures the difference between incoming and outgoing radiation (both solar and terrestrial).
Synonyms
- Terrestrial radiometer: An instrument for measuring Earth's radiation.
- Longwave radiation sensor: A descriptive term for its function.
Notes on Usage
- "Địa xạ kế" is a compound Sino-Vietnamese word: "địa" (earth), "xạ" (radiation), "kế" (meter). It is a precise technical term.
- In many modern English-language scientific texts, the specific function is often described rather than using the rare term "pygeometer." Phrases like "instrument for measuring terrestrial radiation" or "net longwave radiometer" are more common.