Students are challenged to prepare a report to help community leaders to
decide whether to host a statewide conference on preparing for El Nino
events.
Students will:
Understand how and why oceans are part of Earth systems.
Participate in scientific inquiry and construct logical conclusions
based on evidence.
Recognize the global impacts of an El Nino event.
Appreciate the value of Earth science information in improving the
quality of lives, globally and within the community.
Activity 1 -- Causes of Ocean
Circulation
To learn more about this topic, visit the following web sites:
1. Oceans of the World
Site contains links to further information on the Arctic, Atlantic,
Indian, Pacific, and Southern Oceans. Click on the ocean of your
choice to be given a list of more links that contain information such
as political maps and maps of the ocean floor.
(http://www.geography.about.com/science/geography/library/maps/blocean.htm)
"Oceans
of
the World" - Ocean Talk, Naval Meteorology and Oceanography
Command Public Affairs
This site provides a brief, non-technical overview of each of the
ocean basins. Also includes colorful ocean maps and cross
sections.
(http://pao.cnmoc.navy.mil/pao/Educate/OceanTalk2/indexnew.htm)
Online article reviews physical features of the ocean basins and the
technology that scientists use to study these basins. This site
also contains several images to explain how the technology works.
(http://www.ngdc.noaa.gov/mgg/bathymetry/predicted/explore.HTML)
*The Oceanographer of the Navy
Detailed description of the each ocean, including depth variations,
geology of the ocean floor, characteristics of water masses in the
ocean, and how the ocean influences climate and humans through
time. Click on the ocean of your interest for more information.
Site explains the difference between the modes of operation of surface
ocean circulation and deep ocean circulation. Includes links to
define unfamiliar terms and colorful images to accompany the text.
(http://www.glacier.rice.edu/oceans/4_densitydriven.html)
This online papers introduces the concept of thermohaline circulation
and how it relates to climate. The second and third sections of
the paper are a bit more technical, reviewing research techniques for
tracing water masses in the ocean.
(http://www.agu.org/revgeophys/fine00/fine00.html)
First window defines climate. After reading text, click on link
at bottom of screen to cover topics that include the connection
between the oceans and atmosphere, what ocean circulation is and why
it is important, and the seasons of the oceans. Several of the
windows have color images.
(http://topex-www.jpl.nasa.gov/aviso/graphics/general/discover/results/climate.htm)
Explains this ocean current, which plays an extremely important role
in regulating global climate. Includes a high-resolution
satellite image.
(http://eospso.gsfc.nasa.gov/eos_edu.pack/p07.html)
This site contains links to articles about the water masses of the
Southern, or Antarctic, Ocean. Click on link for
information. Each page contains color images illustrating water
mass formation and movement.
(http://www.glacier.rice.edu/oceans/4_southernoceancirc.html)
This site includes a color image showing the wind patterns over the
Pacific and explains how wind patterns form and are documented by
scientists.
(http://eospso.gsfc.nasa.gov/eos_edu.pack/p13.html)
Topics covered include the effect of wind stress on the water surface,
the impact of the Coriolis effect on surface current patterns, and
continent interference. Includes text and images to explain the
major ocean gyres, transverse currents, western and eastern boundary,
and the effect of plate tectonics on surface circulation.
(http://www.glacier.rice.edu/oceans/4_windcirculation.html)
This site reviews how the Corlios effect influences upwelling in the
Northern and Southern hemispheres. Includes color images.
(http://www.glacier.rice.edu/oceans/4_upwelling.html)
This site contains a series of movies showing the trajectory of a
point mass to illustrate how the Coriolis force operates.
Includes views as seen from a fixed plane, a frame of reference
rotating counter-clockwise, and a side view. Also allows
creation of own simulation for further explorations (requires Matlab
program).
(http://satftp.soest.hawaii.edu/ocn620/coriolis/)
Online article reviews the basic physics behind the Coriolis effect,
how the Coriolis effect influences the operation of the atmosphere and
oceans, and why the Coriolis effect is only relevant on certain
(larger) scales.
(http://www.physics.ohio-state.edu/~dvandom/Edu/newcor.html)
To complete the Inquiring Further section of this activity: To learn
more about careers in oceanography, visit the following web sites:
Site contains color contour maps of SST (sea-surface temperature) for
selected ocean regions. Also, click on the links on the side-bar
menu to view additional images and animations on topics such as coral
reef bleaching and El Nino.
(http://www.osdpd.noaa.gov/PSB/EPS/SST/sst_anal_fields.html)
Site reviews the general characteristics of the oceans, including
temperature and salinity. Click on link at bottom of page to
advance. Site contains several full-color images.
(http://icp.giss.nasa.gov/research/oceans/oceanchars/index.html)
2. Water Masses in the Ocean
This article contains information regarding the spill of shoes and
rubber duckies in the Pacific that students investigate in Activity 3,
specifically how the spill led to a greater understanding of ocean
circulation patterns.
(http://www.agu.org/sci_soc/ducks.html)
Online article is divided into sections, including a general
background review of Pacific circulation, a review of the
observational basis for conclusions on Pacific circulation, and an
examination of the techniques used to study circulation.
(http://www.agu.org/revgeophys/talley01/talley01.html)
3. What Causes Deep Ocean Circulation?
This online papers introduces the concept of thermohaline circulation
and how it relates to climate. The second and third sections of
the paper are a bit more technical, reviewing research techniques for
tracing water masses in the ocean.
(http://www.agu.org/revgeophys/fine00/fine00.html)
To complete the investigation, each student group will need:
Water source
Salt
Balance scale (to weigh the salt)
Transparent plastic shoebox
1 liter beaker (to measure water)
Food coloring (red and blue)
Thermometer
Copies of the Atlantic and Pacific Ocean cross sections (one for
each student)
To generate additional maps of vector winds (as shown in the
student text), visit the NOAA Climate
Diagnostics
Center web site (http://www.cdc.noaa.gov/Composites/ ).
The maps in the student text were generated by selecting "Vector
Wind" as the variable, Analysis level of 1000 mb, the same beginning
and ending month (in this case, November), one year (1997 or 2000),
in color and shaded, Plot type of "mean", no contour intervals,
Custom map projection, latitudes from -50 to 50, longitudes from 90
to 300, and Cylindrical Equidistant projection. To generate
additional maps, try varying the months and years, or the variables
that you plot.
To complete the Inquiring Further section of this activity: To learn
more about how volcanic eruptions at divergent boundaries affect deep
ocean currents, visit the following web sites:
Reviews the basics of plate tectonics and examines closely submarine
volcanoes at divergent and convergent boundaries and hot spots.
The site has good images of underwater lava flows as well as images of
the organisms that live near these submarine volcanoes.
(http://volcano.und.nodak.edu/vwdocs/Submarine/)
Site includes a general overview of submarine volcanic eruptions as
well as information about specific underwater volcanoes including the
volcanoes of the Juan de Fuca ridge in the Pacific, Kavachi of the
Solomon Islands, Kick 'Em Jenny of the West Indies, the Loihi Seamount
of Hawaii, and Surtsey and the Vestmannmaeyjar volcanics of Iceland.
(http://vulcan.wr.usgs.gov/Glossary/SubmarineVolcano/framework.html)
To learn more about how atmospheric circulation affects deep ocean
circulation, visit the following web sites:
Online lecture notes review why the Earth's atmosphere is in constant
motion.
(http://ess.geology.ufl.edu/ess/Notes/AtmosphericCirculation/atmosphere.html)
This site includes a color image showing the wind patterns over the
Pacific and explains how wind patterns form and are documented by
scientists.
(http://eospso.gsfc.nasa.gov/eos_edu.pack/p13.html) To learn more
about how the rotation of the Earth affects deep ocean circulation,
visit the following web site:
(http://bowie.gsfc.nasa.gov/ggfc/tides/intro.html) To learn more about
how the biosphere is affected by deep ocean circulation, visit the
following web sites:
Online article takes a look at some of the organisms which live on the
ocean floor. Includes color photos.
(http://pubs.usgs.gov/publications/text/exploring.html)
This article contains information regarding the spill of shoes and
rubber duckies in the Pacific that students investigate in Activity 3,
specifically how the spill led to a greater understanding of ocean
circulation patterns.
(http://www.agu.org/sci_soc/ducks.html)
From the online textbook used by the author in his classes at Okanagan
University College (British
Columbia).
(http://www.geog.ouc.bc.ca/physgeog/contents/8q.html)
Topics covered include the effect of wind stress on the water surface,
the impact of the Coriolis effect on surface current patterns, and
continent interference. Includes text and images to explain the
major ocean gyres, transverse currents, western and eastern boundary,
and the effect of plate tectonics on surface circulation.
(http://www.glacier.rice.edu/oceans/4_windcirculation.html)
This site reviews how the Corlios effect influences upwelling in the
Northern and Southern hemispheres. Includes color images.
(http://www.glacier.rice.edu/oceans/4_upwelling.html)
Online article illustrates how scientists study upwelling by
presenting findings on upwelling along the East coast of the United
States (New Jersey). Includes images and a glossary for
unfamiliar terms.
(http://www.agu.org/sci_soc/eisglenn.html)
To complete the Inquiring Further section of this activity: To learn
more about the relationship between surface currents and climate, visit
the following web sites:
First window defines climate. After reading text, click on link
at bottom of screen to cover topics that include the connection
between the oceans and atmosphere, what ocean circulation is and why
it is important, and the seasons of the oceans. Several of the
windows have color images.
(http://topex-www.jpl.nasa.gov/aviso/graphics/general/discover/results/climate.htm)
Explains this ocean current, which plays an extremely important role
in regulating global climate. Includes a high-resolution
satellite image.
(http://eospso.gsfc.nasa.gov/eos_edu.pack/p07.html)
To learn more seasonal upwelling along the west coast of North America,
visit the following web site:
Page contains links to cover a wide range of topics, including
definitions of El Nino and La Nina, impacts of El Nino, predicting El
Nino, 3-D animations of El Nino temperatures, and information on
finding El Nino data.
(http://www.pmel.noaa.gov/toga-tao/el-nino/nino-home.html)
Online article explains how to use the Internet to research El
Nino. Includes multiple links on El Nino, grouped by "topic",
including the current status of El Nino, forecasting El Nino, El Nino
information from the mass media, images of El Nino, and more.
(http://www.ala.org/acrl/resoct98.html)
Site contains an image of current sea-surface temperature anomalies
which is updated regularly. Site also contains links to El Nino
images and information, including a list of El Nino-related web sites.
(http://www.elnino.noaa.gov/)
This page contains ENSO information, including forecasts, affects to
the US and world, research groups that are studying ENSO, and links
for finding more information.
(http://www.ogp.noaa.gov/enso/)
Includes links to information on ENSO forecasts, an "expert
assessment" (updated weekly), ENSO figures (updated weekly), and a
list of FAQ. Also includes an online tutorial which contains
numerous color images.
(http://www.cpc.ncep.noaa.gov/products/analysis_monitoring/lanina/index.html)
This site links to information on the science behind ENSO, current
ocean/atmosphere conditions, impacts of ENSO on climate, forecasts,
current research, and links to educational resources.
(http://www.cdc.noaa.gov/ENSO/)
Contains TOPEX/POSEIDON sea surface images for the Pacific that are
updated at the beginning of each month. Click on links to view
further information or images.
(http://www.csr.utexas.edu/eqpac/)
Click on links on side-bar menu to find images of the Pacific from
space (including sea surface images, water vapor, SST anomalies,
surface winds, El Nino animations), an ENSO "primer" (a thorough
review of ENSO, presented in audiovisual format with color images and
text), links to related NASA research projects, and more.
(http://nsipp.gsfc.nasa.gov/enso/index.html)
The articles on this list illustrate the negative impacts of El
Nino. Click on article of interest to be taken to a new window.
(http://www.fema.gov/nwz97/elnino.shtm)
This site focuses on the impacts of El Nino, including coastal
erosion, flooding, landslides, storms, and climate change. Click
on link to open the article of interest.
(http://walrus.wr.usgs.gov/elnino/)
Click on link to find further information on the impacts of El Nino,
such as El Nino and tornado occurances, El Nino and hurricane
frequency, coral reef bleaching, El Nino and marine fish and birds,
and more.
(http://www.pmel.noaa.gov/toga-tao/el-nino/impacts.html#part5a)
Online fact sheet (can also be downloaded and printed in PDF format)
looks at the impact of the 1997-1998 El Nino event on the Bay
area. Site includes damage photos, sea level data, upwelling
images, and an explanation of Kelvin waves and their impact.
(http://geopubs.wr.usgs.gov/fact-sheet/fs175-99/)
Two-page fact sheet reviews the relationship between El Nino and
coastal erosion on Monterey Bay, California. Includes color
images.
(http://geopubs.wr.usgs.gov/fact-sheet/fs026-00/fs026-00.pdf)
"Ask
Dr.
Bob"
(http://www-ocean.tamu.edu/education/oceanworld/references/ask_dr_bob.htm)
To complete the Inquiring Further section of this activity:
To learn more about the technology used to study oceanic-atmospheric
interactions, specifcally TOPEX/Poseidon and TAO, visit the following
web sites:
NASA's TOPEX/POSEIDON
Home page (http://topex-www.jpl.nasa.gov/)
University of Texas at Austion, Center for Space Research, TOPEX/POSEIDON
page (http://www.csr.utexas.edu/eqpac/)
NOAA's Pacific Marine Environmental Laboratory, TAO
Project page (http://www.pmel.noaa.gov/tao/)
To learn more about La Nina, visit the following web sites:
Includes links to general La Nina information, such as climate data
for past La Nina events, forecasts, and the impacts of La Nina.
(http://www.elnino.noaa.gov/lanina.html)
"What
is
La Nina?" - NOAA Pacific Marine Environmental Laboratory
Site includes color animations comparing La Nina, El Nino, and
"normal" conditions, a review of the impacts that La Nina has had on
the global climate, and links to further information.
(http://www.pmel.noaa.gov/toga-tao/la-nina-story.html)
Includes links to information on ENSO forecasts, an "expert
assessment" (updated weekly), ENSO figures (updated weekly), and a
list of FAQ. Also includes an online tutorial which contains
numerous color images.
(http://www.cpc.ncep.noaa.gov/products/analysis_monitoring/lanina/index.html)
Back to topActivity
5
-- Weather, Climate, and El Nino
To learn more about this topic: 1. Weather and Climate
This site allows you to create maps showing precipitation,
temperature, or drought severity, of the current or past (back to
January 1895) United States.
(http://www.cdc.noaa.gov/USclimate/USclimdivs.html)
Site contains a downloadable document (in PDF format) written to help
those who teach about weather and climate. Information includes
lists of audiovisual materials, books, Internet sites, professional
organizations, and more.
(http://www.nssl.noaa.gov/resources/)
Page includes links to sites on weather and climate data for the
United States and the world, weather maps, forecasts, and more.
(http://www.cdc.noaa.gov/PublicData/data_faq.html)
The articles on this list illustrate the negative impacts of El
Nino. Click on article of interest to be taken to a new window.
(http://www.fema.gov/nwz97/eln_nwz.htm)
This site focuses on the impacts of El Nino, including coastal
erosion, flooding, landslides, storms, and climate change. Click
on link to open the article of interest.
(http://walrus.wr.usgs.gov/elnino/)
Click on link to find further information on the impacts of El Nino,
such as El Nino and tornado occurances, El Nino and hurricane
frequency, coral reef bleaching, El Nino and marine fish and birds,
and more.
(http://www.pmel.noaa.gov/toga-tao/el-nino/impacts.html#part5a)
Online fact sheet (can also be downloaded and printed in PDF format)
looks at the impact of the 1997-1998 El Nino event on the Bay
area. Site includes damage photos, sea level data, upwelling
images, and an explanation of Kelvin waves and their impact.
(http://geopubs.wr.usgs.gov/fact-sheet/fs175-99/)
Two-page fact sheet reviews the relationship between El Nino and
coastal erosion on Monterey Bay, California. Includes color
images.
(http://geopubs.wr.usgs.gov/fact-sheet/fs026-00/fs026-00.pdf)
To complete the investigation, each student group will need:
Copies of outline map of the US w/ state borders (2 per
group)
Internet access: to collect precipitation data for your
community, visit the following web sites:
National
Weather Service - click on region of interest to open a new
site. You will have to do a little "clicking around" to get
to your local Weather Service office.
(http://www.nws.noaa.gov/)
To complete the Inquiring Further section of this activity: To learn
more about the relationship between El Niño and the occurrence of
hurricanes in the Atlantic, visit the following web sites:
This online research paper analyzes the frequency of hurricanes making
landfall in the United States from 1900-1997 to determine if there is
a connection between El Nino and hurricane occurance.
(http://www.coaps.fsu.edu/~bove/hurr.shtml)
To learn more about the fluctuations in wheat prices over the last 20
years, visit the following web sites:
This site explains what is meant by the "color" of the ocean, noting
that phytoplankton abundance is a primary determinant of ocean
color. Also explains how ocean color is measured and how the
data are used.
(http://daac.gsfc.nasa.gov/CAMPAIGN_DOCS/OCDST/what_is_ocean_color.html)
Homepage of SeaWIFS Project which generates false color images that
show phytoplankton blooms. Includes data sets images and a
teacher resources page.
(http://seawifs.gsfc.nasa.gov/SEAWIFS.html)
Online research paper examines the correlation between CO2 levels in
the atmosphere (and therefore the global carbon budget) and ENSO
events.
(http://www.coaps.fsu.edu/~meyers/papers/CO2/eos.html)
To complete the Inquiring Further section of this activity:
El Nino and Marine Birds
El Nino,
Waterfowler.com
Learn how an El Nino year effected waterfowl migration movements
throughout the
Flyways.
http://www.waterfowler.com/inportal/index.php?env=-news_article-:l-1-1-:bb-4---1-1:n-757-1-229:s-3:m-1
Hydrology
and
Water Resources, EPA
Explore the ENSO-related events such as changes in runoff and
streamflow regimes, reductions in water quality
associated with changes in runoff, and human demands for water
supplies affect waterfowl.
http://www.epa.gov/globalwarming/publications/reference/ipcc/chp8/america9.html#two
The United States Geological Survey National
Geologic Map Database contains information on how and where to
obtain geologic maps. (http://ngmdb.usgs.gov/)
Download state geologic maps at About.com's
site.
(http://geology.about.com/science/geology/cs/geomapsusstates/)
Reading
Geologic
Maps - informative review on how to read and interpret
geologic maps.
(http://geology.about.com/science/geology/library/weekly/aa100800a.htm)
Geologic maps: Regional (two or more
states):
The on-line bookstore of
the American Association of Petroleum Geologists
(http://bookstore.AAPG.org; 918-584-2555)
Topographic maps: Local
The United States Geological Survey MapFinder
allows you to order 7.5 minute maps online for $4 per map plus $5
s/h per order.
(http://edc.usgs.gov/Webglis/glisbin/finder_main.pl?dataset_name=MAPS_LARGE)
The United States Geological Survey maintains a list of Map
Dealers. Click on your state to obtain a list of
retailers who sell maps.
(http://mapping.usgs.gov/esic/map_dealers/)
The United States Geological Survey National Geologic Map Database
site on How
to
find topographic maps
(http://ngmsvr.wr.usgs.gov/Other_Resources/rdb_topo.html)
TopoZone site allows you
to download topographic maps (including USGS maps) for free, at
various scales (from 1:100,000 to 1:24,000).
(http://www.topozone.com/)
MapServer offers free
online viewing of topo, nautical and aeronautical charts plus high
altitude digital ortho quads (nav photos). (www.maptech.com and
www.mapserver.maptech.com)
General Map Resources:
An excellent list of map resources available online can be found
on the Central Michigan University
Resources for Earth Science and Geography Instruction web
site. Included are links to sites to make maps, as well as
links to free downloadable outline maps, satellite imagery, GPS, and
GIS databases.
(http://personal.cmich.edu/~franc1m/locamap.htm)
"Maps" - USGS Earth
Science Information Center, includes general map information, from
how to read maps to how to obtain them. Also includes links to
further information regarding topographic, thematic, planetary maps,
and more. (http://ask.usgs.gov/maps.html)
National
Geographic (maps and videos): 1-800-962-1643
(http://www.nationalgeographic.com/maps/index.html)
"Maps
of the United States" - USGS fact sheet, contains a series of
depictions of the United States, along with information on how to
obtain additional US maps.
(http://www.usgs.gov/fact-sheets/maps-us/index.html)
"Maps
of
the World" - USGS fact sheet, contains a series of world maps,
including outline maps, seismicity maps, and political maps.
Also contains information for ordering more specific world maps.
(http://www.usgs.gov/fact-sheets/maps-world/maps-world.html)
"National Atlas
Maps" - USGS site of a variety of US maps that are available
online, including shaded relief maps, aquifer maps, and further
information on how to order maps not available online.
(http://www-atlas.usgs.gov/atlasmap.html?)
Videos:
NOVA: Chasing
El
Nino
(http://www.pbs.org/wgbh/shop/novavidedu01forces.html#elnino)
National Geographic: Forest
of
the Deep - Describes the effect of El Nino on the marine plants
and animals off the coast of Californa.
Bullfrog Films: Coast
and
Ocean rivers (contains a list ocean and coastal videos, with a
focus on ecosystems)
NOAA's El Nino
Bibliographies (list includes general interest reading, texts
for high school students, text dealing with the impacts of El Nino,
press articles, and El Nino resources available online)
(http://www.lib.noaa.gov/edocs/elnino.html)
Magazines:
Geotimes.
Published by the American Geological Institute, this magazine reviews
current issues in the Earth Sciences and can serve as a valuable
supplemental resource for teachers and students alike. Visit the
web site for online
articles and information about obtaining a one-year subscription
(40% discount for AGI Member Society members; 65% discount for
students).
(http://www.geotimes.org/current/)
Excellent sources of high-school level articles are in both National
Geographic (which often has maps), and Science News
(describing the most recent and interesting events in scientific
research.)