|
Temperature |
| oC |
degree Celcius |
|
Energy |
| cal |
calorie (1 cal = 4.184 J) |
| J |
joule (1 J = 0.239 cal) |
| W |
watt (J s-1) |
|
Concentration |
| ppmv |
parts per million by volume |
| ppbv |
parts per billion by volume |
| pptv |
parts per trillion by volume |
| DU |
dobson unit |
|
Distance |
| m |
meter |
|
|
Area |
| m2 |
square meter |
| ha |
hectare (104 m2; 10-2 km2) |
|
Mass |
| g |
gram |
| Tonne |
metric tonne (106 g; 1000 kg) |
|
Numbers |
| thousand |
103 |
| million |
106 |
| billion |
109 |
|
|
Time |
| s |
second |
| d |
day |
| yr |
year |
|
Prefixes |
| c |
centi (10-2) |
| k |
kilo (103) |
| M |
mega (106) |
| G |
giga (109) |
| T |
tera (1012) |
| P |
peta (1015) |
| E |
exa (1018) |
|
