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MODAPS Services

Welcome to the MODIS Adaptive Processing System (MODAPS) Services website. The website is intended to provide user information concerning all aspects of MODAPS data production, archive, and distribution. The website is a companion to LAADS Web, which provides access to the data products archived by MODAPS in the Level 1 and Atmospheres Archive and Distribution System (LAADS).

This website covers a very wide range of topics in considerable detail. The website has been designed to accommodate a range of users from "first-time" users who, perhaps, have very limited knowledge of MODIS and MODAPS services to experienced users who are searching for a specific detailed piece of information. To that end, the site includes summary material for the former (About) and a "Quick Links" feature that allows an experienced user to navigate to a detailed level in a rapid manner. Please send any comments or suggestions concerning the success, or otherwise, of this strategy to Gang Ye at

Please Note:

In the next few days, you will receive an email from CFI Group on behalf of NASA. This message will ask you to complete a survey for users of NASA Earth science data and services, which includes the LAADS. The LAADS is one of twelve NASA Earth Observing System Data and Information System (EOSDIS) science data centers evaluated by this survey. The purpose of this survey is to help NASA and the DAACs assess customer satisfaction and improve future services. Suggestions from past surveys have been implemented to improve the tools and services offered by the MODAPS LAADS.

Please participate! Your feedback affects our future performance and helps to identify science needs. You will be able to take the survey for each DAAC you use. This is your opportunity to influence the priorities of the DAACs. Thank you in advance to all of you who are willing to spend a few minutes to complete the survey.

If you did not receive a survey and wish to complete one or know of someone who uses EOSDIS data and services who did not receive a survey, please contact CFI Group at

MODAPS LAADS User Services


These pages provide a summary of the types of services MODAPS provides.


These pages include production plans compared to actual production, the PGE versions presently included in production and their promotion history, a list of the current subscriptions, and ingest metrics.


These pages provide details concerning the products archived in LAADS and the associated data pools, instructions for accessing these data, data archive and distribution metrics, and a summary of the capabilities of the current and future operational versions of LAADS.

PGE Codes

These pages provide access to the Level 1, atmospheres, and land PGE codes currently being used in Collection 5 data production. The requestor will be asked to complete a Software Useage Agreement.

User Services

These pages provide contact information and hours of operation for user support, contact information for all staff associated with MODIS data production, archive, and distribution, and metrics for user support services.

Quality Assurance (QA)

These pages identify the Quality Assurance (QA) process utilized for the Collection 5 atmospheres products, identifies which products have successfully passed the QA process, and lists any known issues.

System Status

This page provides the status of MODAPS systems.


These pages provides access to a variety of documents including production plans for Collection 5 reprocessing, the weekly MODAPS reports to the PI Processing (PIP) group, and the Algorithm Theoretical Basis Documents (ATBDs).

Related Sites

This page provides various links to sites related to MODAPS production including MODIS instrument information, satellite overpasses, and the MODIS discipline sites.

Frequently Asked Questions

This page provides a list of frequently asked questions concerning MODAPS production and the LAADS archive and distribution system.

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