Global Model Evaluation

CCMI logo

IGAC/SPARC Chemistry-Climate Model Initiative (CCMI) working group on improved evaluation of chemistry-climate models using in-situ research aircraft data

This working group addresses the following tasks:

  • Develop a methodology to evaluate global CCM simulations using integrated in-situ observations from research aircraft.
  • Improve online access to observational datasets that have been evaluated for quality and formatted for consistency to facilitate model-data intercomparison studies.
  • Develop diagnostics to identify composite datasets with climatological value and provide these formatted datasets to the community.
  • Report analyses on the CCMI Observations for model evaluation.

More information: Chemistry-Climate Model Initiative (CCMI)

IGAC logo SPARC logo

Working Group Members

Ken Aikin (NOAA)
Gao Chen (NASA)
Ron Cohen (UC Berkeley)
Jim Crawford (NASA)
Louisa Emmons (NCAR)
David Fahey (NOAA)
Klaus-Dirk Gottschaldt (DLR)
Heidi Huntrieser (DLR)
Jean-Francois Lamarque (NCAR)
Hans Schlager (DLR)
Martin Schultz (FZ J├╝lich)
Hiroshi Tanimoto (NIES)
Simone Tilmes (NCAR)

Airborne data

WP-3D flight tracks

NOAA Chemical Sciences Laboratory data

NOAA WP-3D flights from chemically-instrumented field missions conducted from 1999 through 2010 in the contiguous United States and Alaska.

Altitude range: surface to 7 km.

DC-8 flight tracksP-3B flight tracks

NASA Tropospheric Chemistry data

NASA DC-8 and P-3B aircraft data from field missions conducted from 1987 through 2011.

Altitude range: Surface to 12 km (DC-8)
Surface to 7 km (P-3B).

TAD: Toolsets for Airborne Data

Use NASA's Toolsets for Airborne Data (TAD) web application for accessing the data sets.

DLR Falcon flight tracks

DLR Falcon data

Data from DLR Falcon aircraft conducted from 2001 to 2012.

Altitude range: Surface to 12 km.

HIPPO flight tracks


The HIPPO (HIAPER Pole-to-Pole Observations) study of the carbon cycle and greenhouse gases measured meteorology, atmospheric chemistry, and aerosol constituents along transects from approximately pole-to-pole over the Pacific Ocean using the NSF/NCAR GV aircraft. Five missions took place in different seasons from 2009 through 2011.

Altitude range: Surface to 15 km.

C-130 flight tracks

NCAR / NSF INTEX-B / Milagro data

The NSF/NCAR C-130 participated in two projects in the spring of 2006 in conjuction with NASA: INTEX-B based in Mexico City, and IMPEX based in Seattle, WA.

Altitude range: Surface to 8 km.

START08 flight tracks


Stratosphere-Troposphere Analyses of Regional Transport (START08) studied the chemical and transport characteristics of the extratropical upper tropospheric and lower stratospheric region using the NSF/NCAR GV research aircraft. A total of 18 flights were conducted in the United States and Canada during April, May and June 2008.

Altitude range: Surface to 15 km.