Getting Started with MODIS V6 Land Surface Temperature Data Part 1

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Detailed Description

This video focuses on the National Aeronautics and Space Administration’s (NASA) Terra and Aqua Moderate Resolution Imaging Spectroradiometer (MODIS) Version 6 Land Surface Temperature data distributed by NASA’s Land Processes Distributed Active Archive Center (LP DAAC). Information about the MODIS Version 6 Land Surface Temperature data products, changes between the Version 5 and Version 6 products, and how to access the data using NASA’s Earthdata Search is provided. To learn more about MODIS Version 6 Land Surface Temperature data and other data products distributed by the LP DAAC please visit https://lpdaac.usgs.gov/.

The LP DAAC is one of twelve NASA Earth Observing System Data and Information System (EOSDIS) DAACs. It is located at the United States Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center in Sioux Falls, South Dakota. The LP DAAC ingests, archives, processes and distributes NASA Earth science land processes data and information. 

Details

Date Taken:

Length: 00:06:08

Location Taken: Sioux Falls, SD, US

Video Credits

Content created by Danielle Golon (Contractor to USGS EROS)

Transcript

Getting Started with MODIS Version 6
Land Surface Temperature Data Part 1:

All About Accessing Data. Presented
by the Land Processes Distributed

Active Archive Center or LP DAAC.
This video is part 1 of the

“Getting Started with MODIS Version
6 Land Surface Temperature Data”

video series. This video will cover
the Land Surface Temperature data

products, improvements in Version
6 products over Version 5 products,

and how to search for and download
these data using the Earthdata

Search Client data access tool.
The LP DAAC distributes several

MODIS Version 6 Land Surface
Temperature products. All data

distributed by the LP DAAC are
available for download at no charge.

These data products provide
information on the temperature and

emissivity of the land’s surface.
These products provide 5 minute,

daily, 8-day and monthly coverage,
with spatial resolutions of 1,000

and 5,600 meters. MODIS Land Surface
Temperature data products are

provided as non-gridded swaths,
as tiled and in sinusoidal

projection or as Global Climate
Modeling Grid or CMG products that

are projected to a latitude-
longitude grid.  Detailed information

about each of the individual products
can be found on the LP DAAC website

at lpdaac.usgs.gov. The MODIS data
collection is reprocessed into a new

version every so often to provide
users with improved products.

There are several improvements that
were included in the reprocessing of

the Land Surface Temperature data
products. Improvements include:

removal of cloud-contaminated land
surface temperature values from

both level 2 and level 3 products,
updates to the look-up table for

the split-window algorithm, minor
adjustments in the classification

based surface emissivity values for
bare soils and rocks, improvements

to the tuned day/night algorithm
for a better performance over

desert regions, and the addition
of two new 8-day and monthly 6

kilometer gridded Land Surface
Temperature products. More

detailed information on the
changes to each of the MODIS Land

Surface Temperature products can
be found on the Digital Object

Identifier or DOI landing page on
the LP DAAC website.  The LP DAAC

website also offers several ways
to download MODIS Land Surface

Temperature data products. At the
bottom of the DOI Landing Page

for each product are links to the
data access tools for the specific

data product. In this video,
step-by-step information for

downloading data using NASA’s
Earthdata Search Client data

access tool will be demonstrated.
From the Earthdata Search home page,

search.earthdata.nasa.gov, click
on the “Earthdata Login” button to

login with your NASA Earthdata
account. If you do not have an

Earthdata account, click on the
register button and follow the

prompt to create one. Now, search
for the Terra MODIS Version 6

Monthly Land Surface Temperature 6
kilometer level 3 gridded product,

MOD11B3. Type “MOD11B3” in the
search bar and hit enter. Click on

the MOD11B3 Version 6 data product.
This will pull up all of the

MOD11B3 granules. Parameters for a
specific time and location can be

set above the map. For this video
let’s look at Land Surface

Temperature in Alberta, Canada
from March 1 to June 30, 2016.

First, pan and zoom the map to
Alberta, Canada. Change the

temporal range by clicking on
“Temporal” and then click on the

Start date to change the date to
“March 1, 2016”. Now change the

End date to “June 30, 2016” and
click on apply filter. To change

the spatial information, click on
“Spatial” and select “polygon”

from the drop down menu. Draw a
polygon around Alberta.  You will

now see a green outline that
indicates the footprints of the

Terra MODIS tiles contained in
your polygon. The granules for the

selected time that are located in
the selected area are now listed

in the lower left hand corner of
your window. Above the granule

list are options to “Retrieve
Collection Data” which allows a

user to download all of the
matching granules, an “i” icon

to learn more about the data
collection, a filter icon to

further filter the data, and a
plus sign icon, which allows a

user to add multiple data products
to their Earthdata Search project.

Click on the first box in the
lower left hand corner list to

select the most recent scene in
the list. This box contains a

preview of the granule, the
Terra MODIS filename, the dates

of the data, an “x” in the upper
right hand corner to remove the

scene from your granule list,
an “i” for more information,

and the retrieval icon to
download a single granule.

Click on the “i” icon to bring
up the metadata for the selected

granule. Remember, metadata are
data about data. The metadata

include the DOI, which is
necessary for proper citation,

as well as information on the
scene’s corner coordinates,

input granules, and more.
Click on the “Metadata” tab

for links to download metadata
in different standard formats.

Click on “Back to Granules” to
return to the granule list.

Click on “Retrieve Collection
Data” to download all of the

granules in the granule list.
Now, review the data download

order on the “Data Access” page,
this page lists the number of

granules in the order and the
size of the order. From here

users can select the service
options. Select “download” to

instantly receive the granules
in the order or select

“Delivery Option” to receive
the granules via email.

Click on “Download” and then
“submit” to submit the order.

This will provide you with
download links, a data access

script or links to browse
images of the data. Depending

on the data access method,
the data can be accessed

immediately or will be sent
to the user via email.

Thank you for watching our
video. For more information

on MODIS Version 6 Land Surface
Temperature data please visit

the LP DAAC website at
lpdaac.usgs.gov