Parallels
Concentric circles that are equal distance apart
Meridians
pole to pole lines that are not equal distance apart and do not connect
Global Information System
information represented as data layers
Global Positioning System (GPS)
a collection of satellites orbiting Earth that send radio signals to describe positioning to land-based receivers
Passive Remote Sensing
a type of remote sensing where instruments simply receive naturally occurring signals
Examples of Passive Remote Sensing
cameras, thermal infrared
Active Remote Sensing
an energy source directs energy to an area and reads the returning signals
Examples of Active Remote Sensing
e.g. radiosondes, microwaves
Latitude
Decided by the angle created by an object’s position relative to the center of the Earth
Longitude
decided by an object’s position relative to the Prime Meridian (Greenwich, UK)
Troposphere
The first layer of the atmosphere; surface-level, hot -> cold
Stratosphere
The second layer of the atmosphere; where weather processes occur, cold -> hot
Mesosphere
The third layer of the atmosphere; where meteors deteriorate to create “shooting stars,” hot -> cold
Thermosphere
The fourth and final layer of the atmosphere; where harmful rays from the Sun are intercepted, cold -> hot
Tropopause
The lid on top of the troposphere
Stratopause
the lid on top of the stratosphere
Mesopause
the lid on top of the mesosphere
Thermopause
the lid on top of the thermopause
Composition of the Atmosphere
Nitrogen (78%), oxygen (21%), argon (1%)
Electromagnetic Radiation (EMR)
energy radiated from charged particles manifests as electrical and magnetic fields
Latent Energy
when potential energy is related to a change in state
Conduction
Transfer by direct contact
Convection
Vertical transfer by flow of a gas, liquid, or weak solid
Radiation
transfer by radiating through electromagnetic