The Joint Polar Satellite System (JPSS) represents the latest generation of polar-orbiting satellites operated by the National Oceanic and Atmospheric Administration (NOAA). The first in the JPSS series of satellites, the Suomi National Polar-orbiting Partnership (NPP) spacecraft was launched in November 2011 to bridge the gap between the current Polar Operational Environmental Satellites (POES) and the future JPSS-1. The Ozone Mapping Profiler Suite (OMPS) is a suite of hyperspectral instruments onboard the Suomi NPP spacecraft designed to continue atmospheric ozone records through both atmospheric profiles and global distribution mapping. OMPS will also be included on the future JPSS payloads. In order to properly extend measurements from previous ozone instruments, including the Solar Backscatter Ultraviolet (SBUV) instrument on POES, proper OMPS calibration is necessary. In this study, the postlaunch performance of the OMPS Nadir Mapper (NM) and Nadir Profiler (NP) are evaluated through their Sensor Data Records (SDRs), which validates their end-to-end calibration. This is achieved through stability monitoring and intercomparison.
A South Atlantic Anomaly (SAA) filter has been developed to filter out large amounts of noise caused by high energy
protons hitting onto the optical instrument focal plane when the satellite passes through the SAA region. The filter is
based on the Principal Component Analysis (PCA)/Empirical Orthogonal Function (EOF) analysis. The EOF vectors
derived from an orbit outside of the SAA region were used to represent the observations coming from the noisy SAA
region. Then using the clear EOF vectors, the observations within SAA region are rebuilt with the most important
principle components. The filter works well in UV region. Tests on L1B data from Global Ozone Monitoring
Experiment-2 (GOME2) and Ozone Monitoring Instrument (OMI) have been conducted. It is expected that this filter can
help to improve the measurements and retrievals for the Ozone Mapping and Profiler Suite (OMPS) nadir profiler in the
To quantify the radiative forcing of ice clouds, we need to fully understand the optical and microphysical properties of these clouds. This paper reports on some preliminary results associated with the optical properties of ice crystals within ice clouds and the effect of ice crystal habit on the retrieval of ice cloud properties from use of the infrared spectrum. Furthermore, various cloud parameters retrieved from the atmospheric infrared sounder (AIRS) data are also reported.
The MOPITT (Measurements of Pollution in the Troposphere) Airborne Test Radiometer (MATR) uses gas filter correlation radiometry from high altitude aircraft to measure tropospheric carbon monoxide. This is in support of the ongoing validation campaign for the MOPITT instrument on board the Tera Satellite. This paper reports on a recent study of MATR CO retrievals using observations of thermal radiation during the autumn of 2001 in western United States. Retrievals of CO were performed and compared to <i>in-situ</i> sampling with less than 7% retrieval error relative to the <i>in-situ</i> total column amount. The effects that influence the retrieval such as the instrument sensitivity, the retrieval sensitivity, and bias between observations and the radiation model are discussed.
Biomass burning can result in tropospheric ozone increasing. In 1997, Indonesia big forest fire in dry season as a result of El Nino emitted large amounts of biomass burning plumes into the atmosphere, which produce ozone in troposphere via photochemical reaction. We mapped three day average of Earth Probe TOMS data from July to December 1997 in Latitude of 20 degrees S to 20 degrees N, and Longitude of 30 degrees E to 180 degrees E, which involves the forest fire area. As a composition we got every day ADEOS TOMS maps in the same area and the same period in 1996. From this maps we can find that in October 1997 the largest total amount of ozone was about 30 Dobson unit larger than the average in the same period of 1996. The area of largest amount was twice appeared in September 8 to 13 and October 11 to 19 which lasted about ten days. The location of that was in the west not far from the forest fire area which can be considered as a result of seasonal wind form east to west. Besides that a fairly large amount ozone area form east Indonesia through the west, we can find that ozone amount was largely increased than that of 1996.