ニンブス5衛星のマイクロ波スペクトルメーター:気象学および地質学的データ
まとめ
Nimbus 5 マイクロ波スペクトロメーターは,曇りの天候でも,大気温と水分を測定することに成功しました. このパッシブマイクロ波センサー技術は,気象学および地球物理学的モニタリングの大きな可能性を示しています.
科学分野:
- 大気科学 大気科学
- リモートセンシングによる遠隔感知
- 地質物理学 地質物理学とは地質物理学です.
背景:
- 正確な大気プロファイリングは,天気予報と気候研究において極めて重要です.
- パッシブマイクロ波センサーは,あらゆる天候で大気の測定を行うためのユニークな能力を提供します.
研究 の 目的:
- Nimbus 5マイクロ波スペクトロメーターの大気および地球物理学的パラメータの回収の能力を実証するために.
- 気象学および地球物理学の応用のための受動的なマイクロ波センサーの可能性を評価する.
主な方法:
- Nimbus 5 マイクロ波スペクトロメーターを使用して,5つの周波数帯 (22.23558.8 GHz) にわたる熱放射線を測定しました.
- 海洋上の大気気温プロファイルと水分量 (蒸気と液体) を取り出した.
- 氷の種類,海の荒さ,雪の覆いなど,表面放射性に影響を与える地質学的パラメータに関するデータを取得した.
主要な成果:
- 曇りの条件下でも,大気温プロファイルと水分量を成功裏に取得しました.
- 氷の種類,海の荒さ,雪の覆いなどの地球物理学的パラメータに関する情報を取得します.
- 大気および地球物理学的測定のための受動的なマイクロ波センサーの有効性を実証しました.
結論:
- パッシブマイクロ波センサーは,大気および地球物理学的データを取得するための非常に有望な技術です.
- Nimbus 5の実験は,さまざまな環境モニタリングアプリケーションにおけるこの技術の可能性を検証しています.
関連する概念動画
Temperature Measurement Sites
A thermometer measures body temperature. The common sites for measuring body temperature are the oral cavity, axillary region, temporal artery, and skin surface, such as the forehead, abdomen, and axilla. True core body temperature is assessed in the rectum, tympanic membrane, pulmonary artery, esophagus, and urinary bladder.
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...
Gas Thermometers and the Kelvin Scale
The definition of temperature in terms of molecular motion suggests that there should be a lowest possible temperature, where the average kinetic energy of molecules is zero (or the minimum allowed by quantum mechanics). Experiments confirm the existence of such a temperature, called absolute zero. An absolute temperature scale is one whose zero point is absolute zero. Such scales are convenient in science because several physical quantities, such as the volume of an ideal gas, are directly...
Precipitation Gravimetry
Precipitation gravimetry is based on converting an analyte into a sparingly soluble precipitate, which is separated by filtration and weighed. An ideal precipitate should be pure, insoluble, of known composition, and easily filtered from the reaction mixture.
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
Atomic Emission Spectroscopy: Instrumentation
The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers. Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
Flame Photometry: Overview
Flame photometry, also known as flame emission spectrometry, is a technique used for the qualitative and quantitative analysis of elements present in a sample using a flame as the source of excitation energy. The concept of flame photometry was realized in the early 1860s by Kirchhoff and Bunsen, who discovered that specific elements emit characteristic radiation when excited in flames. The first instrument developed for this purpose was used to measure sodium (Na) in plant ash using a Bunsen...
Flame Photometry: Lab
In a flame photometer, when a solution like potassium chloride is aspirated into the flame, the solvent evaporates, leaving behind dehydrated salt. This salt dissociates into free gaseous atoms in their ground state. Some of these atoms absorb energy from the flame, leading to their excitation. The excited atoms return to the ground state, emitting photons at characteristic wavelengths. Because only electronic transitions are involved, the resulting emission lines are very narrow. The intensity...


