Short Name:

MOD35_L2

MODIS/Terra Cloud Mask and Spectral Test Results 5-Min L2 Swath 250m and 1km - NRT

NRT

The MODIS level-2 cloud mask product is a global product generated for both daytime and nighttime conditions at 1-km spatial resolution (at nadir) and for daytime at 250-m resolution. The algorithm employs a series of visible and infrared threshold and consistency tests to specify confidence levels that an unobstructed view of the Earth's surface is observed. The Terra MODIS Photovoltaic (PVLWIR) bands 27-30 are known to experience an electronic crosstalk contamination. The influence of the crosstalk has gradually increased over the mission lifetime, causing for example, earth surface features to become prominent in atmospheric band 27, increased detector striping, and long term drift in the radiometric bias of these bands. The drift has compromised the climate quality of C6 Terra MODIS L2 products that depend significantly on these bands, including cloud mask (MOD35), cloud fraction and cloud top properties (MOD06), and total precipitable water (MOD07). A linear crosstalk correction algorithm has been developed and tested by MCST.The electronic crosstalk correction was made to the calibration algorithm for bands 27-30 and implemented into C6.1 operational L1B processing. This implementation greatly improves the performance of the cloud mask. For more information on C6.1 changes visit: https://modis-atmos.gsfc.nasa.gov/documentation/collection-61 The shortname for this Level-2 MODIS cloud mask product is MOD35_L2 and the principal investigator for this product is MODIS scientist Dr. Paul Menzel ( paulm@ssec.wisc.edu). MOD35_L2 product files are stored in Hierarchical Data Format (HDF-EOS). Each of the 9 gridded parameters is stored as a Scientific Data Set (SDS) within the HDF-EOS file. The Cloud Mask and Quality Assurance SDS's are stored at 1 kilometer pixel resolution. All other SDS's (those relating to time, geolocation, and viewing geometry) are stored at 5 kilometer pixel resolution. Link to the MODIS homepage for more data set information: https://modis-atmos.gsfc.nasa.gov/products/cloud-mask

Overview Download Data Citation Information Documentation Additional Information

Science Keywords:

Spatial Extent:

Bounding Rectangle:

N: 90.0 S: -90.0 E: 180.0 W: -180.0

Data Format(s):

Distribution: HDF-EOS

Temporal Extent:

2017-10-11 to now

Platform(s):

TERRA

Data Center(s):

NASA/GSFC/EOS/ESDIS/LANCEMODIS

Instrument(s):

MODIS

Version:

6.1NRT

Download Options

Title: MODIS/Terra Cloud Mask and Spectral Test Results 5-Min L2 Swath 250m and 1km
Version: 6.1NRT
Creator: LANCEMODIS
Publisher: The Land, Atmosphere Near real-time Capability for EOS (LANCE)
Release Date: 2017-10-20T00:00:00.000Z
Linkage: http://modis-atmos.gsfc.nasa.gov/MOD35_L2/

Documentation information is not available for this collection.

DOI
10.5067/MODIS/MOD35_L2.NRT.061
Search for granules from this collection

Data Dates

Creation	2017-10-11T00:00:00.000Z

Processing Level

Quality Overall NRT products match to operational with some expected minor differences from use of different ancillaries and ephemeris. There aren't any data gaps or data artifacts. Information on comparison of C6.1 Operational and NRT Atmospheric Products is posted at: http://lance.modaps.eosdis.nasa.gov/data_products/comparison.html. Information on comparison of C6 Operational and NRT Atmospheric and Land Products is posted at: http://lance3.modaps.eosdis.nasa.gov/data_products/comparison_atmos.html and http://lance3.modaps.eosdis.nasa.gov/data_products/comparison_land.html.

Collection Progress
Active
Use Constraints
None. See disclaimer: https://earthdata.nasa.gov/data/near-real-time-data/about-lance/disclaimer.
Access Constraints

Users need to register with Earthdata to access data. Please visit the Earthdata Login at https://earthdata.nasa.gov/urs/register to register for a username and password.

Related URLs

Ancillary Keywords

CIRRUS CLOUD
CLEAR SKY PIXELS
CLOUD COVERAGE
CLOUD DETECTION
CLOUD FRACTION
CLOUD OBSTRUCTION
CLOUD SCREENING
CLOUD SHADOW
CLOUD TYPES
MOD35_L2
MODIS CLOUD MASK
SUN-GLINT
EOSDIS
Near Real Time (NRT)
LANCE
RELATIVE_START_DATE: -11

ISO Topic Categories

CLIMATOLOGY/METEOROLOGY/ATMOSPHERE

Additional Attributes

Name: ClearPct250m FLOAT Description: None

Resolution	Range Begin	Range End	Unit of Measure	Accuracy
	0.0	100.0

Name: CloudCoverPct250m FLOAT Description: None

Resolution	Range Begin	Range End	Unit of Measure	Accuracy
	0.0	100.0

Name: SuccessfulRetrievalPct FLOAT Description: None

Resolution	Range Begin	Range End	Unit of Measure	Accuracy
	0.0	100.0

Projects

Project Short Name	Campaigns	Project Dates
EOS	No campaigns listed.	No dates provided.
EOSDIS	No campaigns listed.	No dates provided.
ESIP	No campaigns listed.	No dates provided.
TERRA	No campaigns listed.	No dates provided.

Coverage Type	Zone Identifier	Geometry	Granule Representation
HORIZONTAL		CARTESIAN	GEODETIC

Resolution and Coordinate System

Horizontal Data Resolution

Generic Resolutions
- Generic Resolution 1
  X Dimension
  1 Not provided
  Y Dimension
  1 Not provided

Location Keywords

- GEOGRAPHIC REGION
- GLOBAL

NASA/GSFC/EOS/ESDIS/LANCEMODIS
ARCHIVER

Land, Atmosphere Near real-time Capability for EOS (LANCE) Moderate Resolution Imaging Spectroradiometer (MODIS)
This data center does not have any addresses listed.
This data center does not have any contact mechanisms listed.
http://lance3.modaps.eosdis.nasa.gov/

Home Page

MODAPS USER SUPPORT TEAM
Technical Contact

MODAPS USER SUPPORT TEAM
- MODAPS User Support Team
  NASA/GSFC
  Mail Code: 619
  Greenbelt, MD 20771
Email

800-596-8132

301-794-7035
NEAL DEVINE
Technical Contact

NEAL DEVINE

This contact does not have any addresses listed.

This contact does not have any contact mechanisms listed.
GANG YE, PH.D
Technical Contact

GANG YE, PH.D

This contact does not have any addresses listed.

This contact does not have any contact mechanisms listed.
ASAD ULLAH
Metadata Author

ASAD ULLAH

This contact does not have any addresses listed.

This contact does not have any contact mechanisms listed.
MODAPS USER SUPPORT TEAM
Data Center Contact

MODAPS USER SUPPORT TEAM
NASA/GSFC/EOS/ESDIS/LANCEMODIS
- MODAPS User Support Team
  NASA/GSFC
  Mail Code: 619
  Greenbelt, MD 20771
Email

800-596-8132

301-794-7035

Metadata Dates

Creation	2017-10-11T00:00:00.000Z
Last Revision	2019-06-13T00:00:00.000Z

File Distribution Information

Format: HDF-EOS

Format Type: Native

Media: Online (FTP)

Average File Size: 15 GB

Fees: No Fee

CMR Search

MODIS/Terra Cloud Mask and Spectral Test Results 5-Min L2 Swath 250m and 1km - NRT

Collection Information

Data Identification

Data Dates

Related URLs

Other Descriptive Keywords

Ancillary Keywords

ISO Topic Categories

Additional Attributes

Acquisition Information

Projects

Temporal Information

Spatial Information

Resolution and Coordinate System

Horizontal Data Resolution

Generic Resolutions

Generic Resolution 1

Location Keywords

Data Centers

NASA/GSFC/EOS/ESDIS/LANCEMODIS

Land, Atmosphere Near real-time Capability for EOS (LANCE) Moderate Resolution Imaging Spectroradiometer (MODIS)

Data Contacts

MODAPS USER SUPPORT TEAM

MODAPS USER SUPPORT TEAM

NEAL DEVINE

NEAL DEVINE

GANG YE, PH.D

GANG YE, PH.D

ASAD ULLAH

ASAD ULLAH

MODAPS USER SUPPORT TEAM

MODAPS USER SUPPORT TEAM

Metadata Dates

Archive And Distribution Information

File Distribution Information