Station Information
Category: Perturbed Continental
Collaborating Institutes:
Status: Operational March, 2000
Currently Inactive
Altitude Range: 400 - 4800 m asl
Site Info: Mailing Address
Chuck Greenwood
Greenwood Aviation
2117 N. Waverly
Ponca City, OK 74601

Bob Fristoe, pilot
Kelley White, pilot
Links: Profile Plots
Aircraft System Photos

Objectives and Approach

The objective of this project is to obtain a statistically-significant data set of the vertical distribution of aerosol properties (e.g., light scattering and absorption, particle chemistry). The measurements will be used to answer the following scientific questions:

  • How do aerosol properties vary through the vertical column?
  • Under what conditions can surface-based measurements of these properties be used to calculate the direct aerosol radiative forcing from a measured aerosol optical depth?

The measurements will be made by flying a light aircraft (Cessna C-172N) over the SGP site and utilizing a similar aerosol instrument package to the one at SGP. The aircraft will fly level legs at altitudes between 500 m and 3500 m several times per week over the course of one year. How much aerosol do we miss staying at or below 3.5 km?

This is a joint effort between the ARM program and ESRL/GMD of the U.S. National Oceanic and Atmospheric Administration (NOAA).

IAP Aerosol Properties Plots

These plots are designed to provide a quick look at the measured aerosol properties. They display raw unedited data, but known corrections for instrument errors have been applied.

Do not quote or cite.

Atmospheric Properties

Short Term Plots (smoothed corrected, 6 min. averages, includes up to last 48 hours of data transferred to GMD): Long-term Plots (smoothed corrected, hourly averages, last 30 days of data):

IAP System Status

These plots are designed to allow NOAA/ESRL/GMD staff to review current station operations. Feel free to browse these plots, but be aware that they are raw unedited data.

Most Recent Atmospheric Properties:
Short Term Status PlotsLong Term Status Plots