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DYNAMIC OCEANS: A
science activity using SST and depth ocean water temperatures
This page provides links to
downloadable Google Earth ™ files (.KLM and .KMZ)
designed to be used by educators desiring to
develop earth science lessons addressing ocean temperature and its importance to environmental and climate science. These files, links, and instructions
were developed as part of NODC staff participation with other
scientists and education professionals during the course of the Digital Library for
Earth System Education
(DLESE)* workshop May 18-May 23, 2007. The focus of the
to bridge the gap between educators and data holders through the creation of online
chapters for the Earth Exploration
Toolbook*. The Earth Exploration Toolbook is a collection of computer-based Earth
science lessons. Each lesson, or chapter, introduces one or more
data sets and an analysis tool that enables users to explore some
aspect of the Earth system. Step-by-step instructions in each chapter
walk users through a case study in which they access data
and use the featured tool to explore issues or concepts in Earth system
science. In the course of completing a chapter, users produce and
analyze maps, graphs, images, or other data products. The ultimate goal
of each activity is to build users' skills and confidence in order to encourage further use of environmental data in their own investigations of the Earth system. The
workshop combines teams of data representatives with online tool
experts, educators, and others to fashion a chapter during the course
of the workshop.
Download the file "TheOceanToday.kmz"
to a drive or directory on your
computer by right-clicking here and selecting "Save Link As...". The .KMZ
extension indicates compressed KML
files and associated files. It is recognized by GoogleEarth™ - you do not
need to uncompress the file for Google Earth™ to read it!
Open Google Earth™. From the top left menu, click File, Open and navigate to your
file. The file will then load automatically
(this may take a few moments).
4). When correctly loaded, image
layers may be turned on and off within
clicking the boxes in the Places palette on the left of the
screen. You should be able to view the following:
A. The daily current NCOF Operational Sea Surface Temperature and Sea Ice Analysis (today's SST graphic image), which is retrieved automatically from the National Centre for Ocean Forecasting*.
B. Archived SST and Sea Ice Analyses (SST graphic images) from the 21st of each month between April 2006 and April 2008. This collection of .PNG graphics is included in the downloadable .KMZ file. With multiple monthly graphics turned on, students should be able to rotate through the layered images using the time scroll bar at the top right and view monthly changes in sea surface temperature throughout the year.
C. The SST graphics are overlaid by ARGO float locations from the NODC Global ARGO Data Repository at NODC; users can access ARGO data and data plots by clicking on a float point (see inset in above graphic). Current ARGO float locations and archived data from April 2006-2008 are displayed as separate layers. Please see Tip 1 below before using Argo layers in Google Earth™.
D. An SST temperature bar in degrees Celsius.
*KML (Keyhole Markup Language) is a file format used to display geographic data in an Earth browser, such as Google Earth ™, Google Maps, and Google Maps for mobile. KML uses a tag-based structure with nested elements and attributes and is based on the XML standard*. KML files and their related images (if any) can be compressed using the ZIP format into KMZ archives. KMZ files are compressed collections of one or more files for viewing in Google Earth™. They can be opened using any common zip/unzip tool, such as "WinZip" or the default Windows XP Compressed Folders Tool (Windows), "Stuffit" (Mac OS), or "zip" (Mac OS or Linux). You may need to change the file extension from .kmz to .zip to have the file be recognized by a zip tool. Remember to change back to .kmz before using the file in Google Earth™. For more information on KML and KMZ files, see the Google Earth™ documentation pages*.
TIPS FOR USING GOOGLE EARTH™
(1) While TheOceanToday.kmz contains two years of monthly Argo float information, Google Earth™ is not currently designed to handle such a large volume of data. In order to overcome this problem, turn on only one or two months of Argo data at a time. Where the satellite images are intended to demonstrate global trends of sea surface temperature throughout the year, the Argo profile data is included for use in validating the satellite observations and connecting them to the rest of the water column at individual locations.
LINKS FOR ADDITIONAL INFORMATION:
The ARGO Information
Centre* is a source of information on the progress of the Argo project
and a component of JCOMMOPS*, JCOMM in-situ Observing
Platform Support Centre. Locations of ARGO floats
and associated oceanographic data provided by the International
ARGO Information Centre may be displayed by loading the International ARGO Information Centre .kmz file as an additional layer.
Clicking on ARGO positions from this file displays temperature data as full-color plots with images of the individual profiling float; the file is
downloadable from the Argo Information Centre website.
The Digital Library for Earth System Information (DLESE) is a distributed community effort involving educators, students, and scientists working together to improve the quality, quantity, and efficiency of teaching and learning about the Earth system at all levels.
Data Repository: The U.S. National Oceanographic Data Center
(NODC) serves as the long term archive, also known as the Global Argo
Data Repository (GADR), for Argo data. The GADR is responsible for preserving and updating Argo data that are passed to the NODC, often after some reanalysis or corrections have been applied. While the GDACs are established to provide immediate service
to all types of users with high speed Internet access, there are other
users who will not be able to get the data in this way. The GADR
provides alternate means for users to get Argo data and information
The NOAA Education
Resources aids students and teachers to access educational
booklets produced throughout NOAA.
The NOAA Central Library contains thousands of books, journals, publications and images on a
huge range of subjects from the marine and earth sciences to historical
interest. User searches are facilitated by WINDandSEA,
an Internet guide built in response to the many reference questions
that are posed to the library. WINDandSEA is designed to make Internet searching more
efficient for the NOAA community, the academic community, other government
agencies concerned with oceanic and atmospheric issues, and the general public.
Presently WINDandSEA has over
1,000 selected links to science and
policy sites organized by topic and alphabetically within topic. All of
sites have been reviewed and annotated by NOAA Central Library and NOAA
Regional Libraries staff. In addition, images from the popular NOAA Photo Library are
downloadable and can be used freely.
Teacher at Sea Program: Past, Present, and Future: Since
1990, NOAA's Teacher at Sea program, managed by the NOAA Office of
Marine and Aviation Operations, has enabled qualified teachers of
kindergarten through college to go to sea aboard NOAA research and
survey vessels and work side-by-side with scientists, officers, and
OceanTeacher* is a training resource for data and information management
related to oceanography and marine meteorology.
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|Last modified: Fri, 12-Oct-2007 11:10 UTC||NCEI.firstname.lastname@example.org|
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