Lecture 1 Flashcards
Climate change, global warming and greenhouse effect
CLIMATE
Atmospheric
conditions of the
planet or region over a long period of time
Atmospheric conditions of the planet or region over a long period of time
CLIMATE
WEATHER
describes atmospheric conditions at a particular place and time in terms of air temperature, pressure, humidity, wind speed, and precipitation
describes atmospheric conditions at a particular place and time in terms of air temperature, pressure, humidity, wind speed, and precipitation
WEATHER
what do weather describes
air temperature, pressure, humidity, wind speed, and precipitation.
air temperature, pressure, humidity, wind speed, and precipitation.
what do weather describes
climate forecast
by aggregates of weather statistics over periods of 30 years
weather forecast
collecting statisticla data
collecting statisticla data
weather forecast
weatehr study
meteorology
meteorology
weatehr study
climate study
climatology
climatology
climate study
weather components
sunshine, rain, cloud cover, wind, hail, snow, sleet, freezing rain, flooding, blizzards, ice storms, heat waves
climate components
precipitation, temp.,humudity, sunshine, wind, velocity, fog, frost, hail storm, over a period of time
weather vs climate
study
climate: climatology
weather: meteorology
weather vs climate
forecast
climate
by aggregates of weather statistics over periods of 30 years
weatehr:
collecting statisticla data
weather vs climate
components
CLIMATE:
precipitation, temp.,humudity, sunshine, wind, velocity, fog, frost, hail storm, over a period of time
WEATHER:
sunshine, rain, cloud cover, wind, hail, snow, sleet, freezing rain, flooding, blizzards, ice storms, heat waves
by aggregates of weather statistics over periods of 30 years
climate forecast
global warming?
the increase in the average measured temperature
of the earth’ s atmosphere and oceans
the increase in the average measured temperature
of the earth’ s atmosphere and oceans
global warming?
The average global air temperature
increased by about _____°C over the
past 100 years
1.18
Greenhouse Effect?
a process by which solar radiation is absorbed by greenhouse gases and the temperature of Earth’s atmosphere is increased.
a process by which solar radiation
is absorbed by greenhouse
gases and the temperature of
Earth’s atmosphere is increased.
Greenhouse Effect?
Greenhouse gas
absorbs radiation at
specific wavelengths within the spectrum of radiation (infrared
radiation) emitted by the Earth’s surface and by clouds.
absorbs radiation at
specific wavelengths within the spectrum of radiation (infrared
radiation) emitted by the Earth’s surface and by clouds.
Greenhouse gas
Greenhous gas 2
The gas in turn emits infrared radiation from a level where the
temperature is colder than the surface.
emits infrared radiation from a level where the
temperature is colder than the surface.
Greenhous gas 2
CLIMATE CHANGE
any change in climate over time, whether due to natural variability
or as a result of human activity
any change in climate over time, whether due to natural variability
or as a result of human activity
CLIMATE CHANGE
causes climate change
(arrow)
BURNING OF FOSSIL FUELS & DEFORESTATION AND BIOMASS BURNING
->
“ENHANCED” GREENHOUSE EFFECT
->
GLOBAL WARMING
->
CLIMATE CHANGE
10 indicators of a warmimg world
HIGH:
ocean heat content
seas surface temperature
sea level
temperature over oceans
humidity
air temp near surface (troposphere)
temp over land
LOW:
sea ice
glaciers
snow cover
ice core sampling
can be used to reconstruct temp, atmospheric cerculation strength, ocean volume, etc
can be used to reconstruct temp, atmospheric cerculation strength, ocean volume, etc
ice core sampling
Albedo Effect
reflectivity of an object in space using a term called albedo. This is the amount of electromagnetic radiation that reflects away, compared to the amount that gets absorbed
reflectivity of an object in space using a term called albedo. This is the amount of electromagnetic radiation that reflects away, compared to the amount that gets absorbed
Albedo Effect
Glacial Melting
Himalayan glaciers are melting twice as fast now as they were before the turn of the century. Scientists combed 40 years of satellite observations spanning 2,000 kilometers (1,243 miles) across India, China, Nepal and Bhutan, and found that the glaciers have been losing the equivalent of a foot -and-a-half (45 centimeters) of ice each year since 2000.
Himalayan glaciers are melting twice as fast now as they were before the turn of the century. Scientists combed 40 years of satellite observations spanning 2,000 kilometers (1,243 miles) across India, China, Nepal and Bhutan, and found that the glaciers have been losing the equivalent of a foot -and-a-half (45 centimeters) of ice each year since 2000.
Glacial Melting
Glacial Melting
Mt. ____ the highest mountain in Africa, has undergone extensive hydrologic changes over the past century in an area where water resources are critical.
Mt. Kilimanjaro, Tanzania,
Glacial Melting
Mt. Kilimanjaro, Tanzania,
the highest mountain in Africa, has undergone extensive hydrologic changes over the past century in an area where water resources are critical.
Glacial lake outburst
flood (GLOF)
a phrase used to describe a sudden release of a significant amount of water retained in a glacial lake
a phrase used to describe a sudden release of a significant amount of water retained in a glacial lake
Glacial lake outburst
flood (GLOF)
