The NPOESS Preparatory Project Science Data Segment: The Final As Built Description

Schweiss, R.J.; Hunter, Michael D.; Samadi, Shahin

doi:10.1109/igarss.2008.4779795

Cited by 6 publications

(4 citation statements)

References 3 publications

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“…An assessment of the climate quality of products from the generation of EOS sensors is currently a priority for NASA as part of the transitional NPOESS Preparatory Program (NPP) [ Schweiss et al , 2008]. The AIRS atmospheric retrieval goals are to obtain 1 K accuracy for 1 km layers below 100 mb for temperature and 10% for 2 km layer water vapor column density for a global ensemble of clear to partly cloudy ocean and land conditions [ Fetzer et al , 2003].…”

Section: Introductionmentioning

confidence: 99%

An assessment of the absolute accuracy of the Atmospheric Infrared Sounder v5 precipitable water vapor product at tropical, midlatitude, and arctic ground‐truth sites: September 2002 through August 2008

et al. 2010

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[1] The Atmospheric Infrared Sounder (AIRS) is the first of a series of satellite sensors that exploit high spectral resolution and broad spectral coverage of the midinfrared to improve the retrieval accuracy of passive infrared sounding. The AIRS atmospheric retrieval goals are to obtain 1 K accuracy for 1 km layers below 100 mb for temperature and 10% for 2 km layers for water vapor in clear and most cloud conditions. The AIRS total column precipitable water vapor (PWV) is obtained by integrating the vertical profile of water vapor mixing ratio derived from cloud-cleared radiances. The accuracy goal of the AIRS PWV product is 5%. This paper provides a validation of the AIRS PWV product at three distinct climate sites over the nearly full range of total water amounts observed on Earth (between 0.1 and 6.5 cm). Six years (September 2002 to August 2008) of AIRS v5 retrievals of PWV are evaluated against ground-based microwave radiometer (MWR) data at three Department of Energy Atmospheric Radiation Measurement program (ARM) sites. The accuracy of the MWR PWV retrieval is estimated to be between 1% and 3%. This study shows that the agreement between the MWR and AIRS retrievals of PWV is within 5% at all three ARM climate sites for most conditions. The notable exceptions are (1) very dry cases (PWV < 1 cm) over the Southern Great Plains (SGP) land site during both daytime and nighttime, where AIRS is too moist by 15%-30% and (2) nighttime observations over the SGP land site for PWV > 1 cm, where AIRS is too dry by about 10%. The moist bias for low water amounts (usually observed during the winter) over land could be a surface emissivity-related error since very little bias is seen at the ARM Arctic site for similar water amounts. The cause of the dry bias at nighttime over land for moderate water amounts is not determined by this study. However, a spatial map of the diurnal bias in monthly AIRS water amount suggests that this effect is related to meteorological conditions in the U. S. Great Plains, which in the summertime is characterized by a moist boundary layer. The diurnal error in AIRS PWV at the SGP site seen with respect to the MWR data are confirmed by PWV amounts derived from a coincident ground-based GPS receiver.Citation: Bedka, S., R. Knuteson, H. Revercomb, D. Tobin, and D. Turner (2010), An assessment of the absolute accuracy of the Atmospheric Infrared Sounder v5 precipitable water vapor product at tropical, midlatitude, and arctic ground-truth sites:

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Section: Introductionmentioning

confidence: 99%

An assessment of the absolute accuracy of the Atmospheric Infrared Sounder v5 precipitable water vapor product at tropical, midlatitude, and arctic ground‐truth sites: September 2002 through August 2008

et al. 2010

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“…The primary focus will be on the production of Sensor Data Record (SDR) and Environmental Data Record (EDR) science products in the Interface Data Processing Segment (IDPS) of the NPOESS Ground System. The NASA NPP Science Team has been tasked with evaluation of the anticipated operational products from the IDPS within a facility known as the Science Data Segment (SDS) [1]. Within the SDS, NASA has established five Product Evaluation and Algorithm Test Elements (PEATEs).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of VIIRS cloud and aerosol products for the NPOESS Preparatory Project

Cureton

2010

2010 IEEE International Geoscience and Remote Sensing Symposium

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“…These data records are distributed to the meteorological centers and archived at the Archive and Distribution Segment (ADS) of the NPP system. The Science Data Segment (SDS) [4,5] of the NPP system provides the NPP mission with the capability to assess the quality of the Raw Data Records (RDR) it receives from the IDPS, and the quality of the Sensor Data Records (SDR) and the Environmental Data Records (EDR) it receives from the ADS. The SDS is composed of SDS Data Distribution and Depository Element (SD3E) [2], the Integration and Test System Element (I&TSE), the Project Science Office Element (PSOE), the NPP Instrument Calibration Support Element (NICSE), and five separate PEATEs dedicated to assessing the quality of products from the Land, Ocean, Atmosphere, Ozone, and atmospheric Sounder disciplines.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the VIIRS Land algorithms at Land PEATE

Wolfe

Devadiga

et al. 2010

2010 IEEE International Geoscience and Remote Sensing Symposium

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The NPOESS Preparatory Project Science Data Segment: The Final As Built Description

Cited by 6 publications

References 3 publications

An assessment of the absolute accuracy of the Atmospheric Infrared Sounder v5 precipitable water vapor product at tropical, midlatitude, and arctic ground‐truth sites: September 2002 through August 2008

An assessment of the absolute accuracy of the Atmospheric Infrared Sounder v5 precipitable water vapor product at tropical, midlatitude, and arctic ground‐truth sites: September 2002 through August 2008

Evaluation of VIIRS cloud and aerosol products for the NPOESS Preparatory Project

Evaluation of the VIIRS Land algorithms at Land PEATE

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