WRR(World Radiometric Refere nee)观测值=IPS-1956观测值x1.022 (CWB测报作业规范)
长度（英美制）Len gths *
1 foot (ft.) = 12 in ches (in.)
1 yard (yd) = 3 feet
1 rod = 5.5 yards
重量（英美制）Weights *
Avoirdupois Measures
1 grain = 0.0648 grams (g)
1 ounce (oz.) = 437.5 grains
1 pound (lb.) = 16 ounces
1 ton = 2000 pou nds
1 long ton = 2240 pou nds
容积：1立方公尺cubic meter=1公秉=1000公升liter=219.98加仑gallo n( UK)=264.171gallo n(USA)
热量：1 calorie=4.187*10**7 ergs
太阳辐射单位换算--近紫外线(约0.3-0.4口)至近红外线(约3〜4口)间之波长
积算量：1MJ? m-2=23.9ca? cm-2=0.278 kw? h? m-2
Troy Measures
1 grain = 0.0648 grams (g)
1 carat = 3.086 grains = 0.2 grams
1 penny weight = 24 grains
1 troy ounce = 480 grains
1 troy pound = 12 troy oun ces
1 pin t (pt) = 16 fl. oz. = 28.88 in3
1 quart (qt) = 2 pi nts = 57.75 in3
1 gall on (gal) = 4 quarts
1 barrel of petroleum = 42 gal.
1 barrel of liquid = 31 gal.
体积Volumes *
液体计量Liquid Measures
1 tablespo on (tbsp or T) = 3 teaspo ons (tsp or t)
3
1 fluid ounce (fl oz) = 2 tablespo ons = 1.805 in
1 cup (c) = 8 fl. oz.
Apothecary Measures
1 grain = 0.0648 grams (g)
1 scruple = 20 grains
1 dram = 3 scruples
1 apothecary ounce = 8 drams
1 apothecary pound = 12 apothecary oun ces
固体计量Dry Measures
1 in8 in3
1 yd3= (3 ft)3= 27 ft3
1 dry pi nt (pt) = 33.60 in3
1 dry quart (qt) = 2 dry pints = 67.2
x,y是纬度，经度的弧度单位，r是地球半径
在同经度上时D=r*|x1-x2|
气压：1atmosphere pressure=1013.25hPa=760.00mm of mercury(Hg)=29.921 in ches(Hg)=14.7lb/sq.i nch
速度：1m/s = 1.94k nots = 2.24miles/hr = 3.28ft/s = 3.60 km/hr
长度:1浬nautical mile=1.150776哩mile=6076呎feet=1852公尺meter=6100台 尺=72913吋inch
重量：1台斤=0.6公斤kilogram=1.2市斤=1.3227磅pound=21.16434英两ounce
面积：1公顷=100公亩=10000平方公尺sq.meter=2.471英亩acre=1.0310甲=3025坪=10.31分
强度：Ical? cm-2? min-1=0.698kw?
-2-2-1
Ikw? m =1.431cal? cm ? min
m-
1J=1w? s
1ly=1cal? cm-2= 0.0428MJ? m-2
IPS(International Pyrheliometric Scale)-1956观测值=Smithsonian观测值x0.98
1 fathom = 6 feet
1 furlo ng = 40 rods = 1/8 mile
1 mile (mi.) = 1760 yards = 5280 feet
1 nautical mile = 1.15 miles = 6076.1:eet
1 land league = 3 miles
1 marine league = 3 n autical miles
干空气平均分子量m=28.966g mol**(-1)
干空气定压比热cp=7R/2=0.240 cal g**(-1) K**(-1)
干空气定容比热cv=5R/2=0.171cal g**(-1) K**(-1)
Stefa n-Boltzma nn con sta nt=8.132*10**(-11)ly K**(-4) min **(-1)
计量单位与换算式
作者:
日期:
常数与换算
地球赤道半径=6378.39km
地球两极半径=6356.91km
地球旋转角速度Q=7.292*105s-1
重力g45=980.616cms**(-2)
太阳常数=1.96ly min **(-1)
水分子量mw=18.016g mol**(-1)
干空气气体常数=2.8704*10**6erg g**(-1) K**(-1)
纬度平行于赤道，1度约Ill公里，经度因为在两极相会，故自赤道处之1度约111公里渐向两极缩为0公里，在台北(北纬24度)附近，1经度约为101公里。 两点间之距离公式列如下：［电子表格］
两点间距离D(x1,y1,x2,y2)=r*acos(sin(x1)*sin(x2)+cos(x1)*cos(x2)*cos(y1-y2))