NDACC Measurements and Analyses Directory

I) Principal Investigators (PIs), Instruments, and Deployments

a) Listed according to NDACC Primary Station

b) Listed according to instrument type

II) Theory and Analysis (a) and Satellite (b) Working Groups

III) Complementary Investigators (CIs), Instruments, and Deployments

a) Listed according to NDACC Complementary Site / Station

b) Listed according to instrument type

IV) Candidate Principal and Complementary Investigators (PIs and CIs), Instruments, and Locations

V) NDACC-Related Acronyms

This Directory summarizes the operational status of the Network for the Detection of Atmospheric Composition Change (NDACC). It reflects the various international measurement and analysis activities and future expansion opportunities. The Directory will continue to grow with the acceptance of new instruments and experimental Principal Investigators (PIs) at NDACC Primary Station sites, Theory and Statistical Analysis Investigators (TIs), Satellite Investigators (SIs), and Complementary Investigators (CIs) at Primary and/or Complementary Sites/Stations.

Section I lists NDACC experimental PIs: (a) by station latitude (ordered by instrument type) and (b) by instrument type (ordered by station latitude). This section includes investigators with an identified NDACC-class instrument operating at an NDACC Primary Station site from which there are no plans for relocation in the near future; investigators with instruments, either built or under development, with a tentative NDACC Primary Station site selected; and investigators with mobile NDACC instruments, either built or under development, nominally assigned to an NDACC site but whose deployments and use as intercomparators are open. Deployment of both the "fixed" and mobile instruments can be reprioritized based on science needs and the assessment and recommendation of the NDACC Steering Committee.

A fundamental aim of the NDACC is to provide high-quality data for scientific studies, and the NDACC Theory and Analysis Working Group promotes the use of the NDACC data by all interested researchers. With this aim in mind, all NDACC data over two years old is publicly available. Access to this data is available through anonymous ftp access to the server. Users of NDACC data are expected to consult the on-line documentation and reference articles to fully understand the scope and limitations of the instruments and resulting data. Scientific users of the data are encouraged to contact directly the appropriate NDACC PI (listed in the data documentation on the web page) to ensure the proper use of specific data sets. 

Many NDACC investigators have agreed to make their data publicly available regularly on a shorter timescale (in some cases, immediately upon archiving). Further, the use of any NDACC data prior to its being made publicly available (i.e., for use associated with field campaigns, satellite validation, etc.) is possible via collaborative arrangement with the appropriate PI(s). Coauthorship shall be offered on publications resulting from the verification procedure to those investigators participating in the process. Those using NDACC data in a talk or paper are asked to acknowledge its use, and to inform the Theory and Analysis Working Group PIs (see Section II) of any relevant publications.

Section III is a list of NDACC experimental CIs who are conducting measurements identified as having specific benefit for the NDACC through such aspects as the measurement location, the measurement technique, or additional science value. These include NDACC-class instruments operating at locations other than an NDACC Primary Station site or other types of instruments operating at an NDACC Primary Station site or at a Complementary Site/Station. Section IIIa is a listing of CIs by site/station latitude, while Section IIIb is a listing by instrument type. As with all NDACC investigators, CIs are selected through the review of proposals submitted to the NDACC Steering Committee. Specific details regarding the framework for the association of both long-term and campaign-style measurements within the NDACC can be found in the Complementary Measurements Protocol.

Section IV lists a number of instruments and/or measurement activities that are similar to those in the NDACC, but are presently operated independent of the Network. As candidates for the NDACC PI or CI status, both the investigator's interest in joining the NDACC and the flexibility of the instrument deployment must be ascertained. It is anticipated that investigators will shift from Section IV to Sections I or III as their involvement in the NDACC crystallizes and possibly, from Section III to Section I as NDACC implementation matures.