Thursday, May 18, 2006

英文解釋名詞

請利用這個地方, 將已知的英文名詞解釋加進來, 可利用comment方式加, 我們會將提供的名詞一直加進來...表現佳者加0.5 至3分..

solar spectral irradiance-- 太陽幅射能譜, 每單位波長的太陽幅射能量強度, 單位為 w/m2-micrometer.

albedo--太陽短波幅射經由地表, 雲及空氣分子反射至外太空的反射率, 全球平均反射率為0.3

黃日輝 said...臭氧洞Ozone hole:定義:並不是指大氣中有一個破洞,也不是指臭氧洞中一點臭氧都沒有,而是指大氣中臭氧總量減少到200個道布森單位(Dobson Units)以下,才稱為出現了臭氧洞。另一簡單定義為臭氧量減少達50%即視為臭氧洞。

11:01 PM 黃日輝 said...光分解的量子產率 Quantum yield(Φ,Y):又稱量子產額,為光化學反應的重要基本量之一。 光分解的量子產率一般用φ表示,如下所示:φ =進行光分解的激發態原子數 / 吸收光子數(或激發態原子數)黃日輝 提到...

碳氫化合物(非甲烷) Hydrocarbon (Non-methane) (NMHC)在正常大氣條件下,大都以氣態存在,為產生臭氧和其他光化學空氣污染物的前驅物質。 NMHC有甲烷的烷類, 稀類, 炔類, 芳香族, 醛類, 酮類等

7:05 AM 黃日輝 提到...氮氧化物NOX = NO + NO2 反應性氮氧化物NOY (HNO3 , HONO, NO3, N2O5, HNO4, PAN and other organic nitrates, etc.)The NOY includes NOX11:01 PM Post a Comment

Dobson unit--Dobson:大氣層空氣柱中(地表往上約60公里)的O3, 被壓縮成O3分壓為1大氣壓273K下的空氣柱厚度為0.01mm時,O3的總量稱為 1個Dobson。一般來說大氣層的O3的平均空氣柱積分總量約為300 Dobson。A dobson unit is the most basic measure used in ozone research. The unit is named after G.M.B. Dobson, one of the first scientists to investigate atmospheric ozone (~1920 - 1960). He designed the 'Dobson Spectrometer' - the standard instrument used to measure ozone from the ground. The Dobson spectrometer measures the intensity of solar UV radiation at four wavelengths, two of which are absorbed by ozone and two of which are not.The illustration above shows a column of air, 10 deg x 5 deg, over Labrador, Canada. The amount of ozone in this column (i.e. covering the 10 x 5 deg area) is conveniently measured in Dobson Units.If all the ozone in this column were to be compressed to stp (0 deg C and 1 atmosphere pressure) and spread out evenly over the area, it would form a slab approximately 3mm thick.1 Dobson Unit (DU) is defined to be 0.01 mm thickness at stp; the ozone layer over Labrador then is ~300 DU.--蔡春進cjtsai@mail.nctu.edu.twhttp://www.nctu.edu.tw/~cjtsai

No comments: