Index Catalog // ScholarsArchive@OSU

Aerosol optical depths and direct radiative forcing for INDOEX derived from AVHRR: Theory

Creator:: Coakley, James A., Jr., Tahnk, William R., Jayaraman, A., Quinn, Patricia K., Devaux, Claude, and Tanré, Didier
Abstract:: A scheme is presented for retrieving aerosol properties for ocean regions from reflected sunlight at both the visible and near infrared wavelengths measured by the NOAA advanced very high resolution radiometer (AVHRR). For the Indian Ocean Experiment (INDOEX), aerosols were presumed to be a mixture of a continental haze that...
Resource Type:: Article
Full Text:: and Atmospheric Sciences, Oregon State University, Corvallis, Oregon, USA A. Jayaraman Planetary

Indian Ocean Experiment: An integrated analysis of the climate forcing and effects of the great Indo-Asian haze

Creator:: Ramanathan, V., Crutzen, P. J., Lelieveld, J., Mitra, A. P., Althausen, D., Anderson, J., Andreae, M. O., Cantrell, W., Cass, G. R., Chung, C. E., Clarke, A. D., Coakley, James A., Collins, W. D., Conant, W. C., Dulac, F., Heintzenberg, J., Heymsfield, Andrew J., Holben, B., Howell, S., Hudson, J., Jayaraman, A., Kiehl, J. T., Krishnamurti, T. N., Lubin, D., McFarquhar, G., Novakov, T., Ogren, P. K., Podgorny, I. A., Prather, K., Priestley, K., Prospero, J. M., Quinn, Patricia K., Rajeev, K., Rasch, P., Rupert, S., Sadourny, R., Satheesh, S. K., Shaw, G. E., Sheridan, P., and Valero, F. P. J.
Abstract:: Every year, from December to April, anthropogenic haze spreads over most of the North Indian Ocean, and South and Southeast Asia. The Indian Ocean Experiment (INDOEX) documented this Indo-Asian haze at scales ranging from individual particles to its contribution to the regional climate forcing. This study integrates the multiplatform observations...
Resource Type:: Article
Full Text:: . Heintzenberg, 4 A. J. Heymsfield, •ø B. Holben, •: S. Howell, s J. Hudson, •3 A. Jayaraman, TM J. T. Kiehl, •ø

Retrieval of cloud droplet size from visible and microwave radiometric measurements during INDOEX: Implication to aerosols’ indirect radiative effect

Creator:: Liu, Guosheng, Shao, Hongfei, Coakley, James A., Curry, Judith A., Haggerty, Julie A., and Tschudi, Mark A.
Abstract:: The effective radius of water cloud droplets is retrieved using remotely sensed passive microwave and visible data collected by aircraft during the Indian Ocean Experiment. The purpose of this study is to assess the aerosols’ effect on cloud microphysical and radiative properties. To study this effect, we investigate the relationships...
Resource Type:: Article
Full Text:: polluted trade cumulus clouds, J. Geophys. Res., 106, 28,653– 28,674, 2001. Jayaraman, A., D. Lubin, S

Effects of threshold retrievals on estimates of the aerosol indirect radiative forcing

Creator:: Matheson, Mark A., Coakley, James A., and Tahnk, William R.
Abstract:: Empirical estimates of the aerosol indirect radiative forcing often rely on threshold cloud retrievals applied to multispectral satellite imagery data. In such retrievals, pixels having radiances that surpass prescribed thresholds are assumed to be overcast even if they are only partially cloud covered. This assumption leads to cloud visible optical...
Resource Type:: Article
Full Text:: Sciences, McGraw-Hill, New York. Coakley, J. A. Jr., W. R. Tahnk, A. Jayaraman, P. K. Quinn, C. Devaux

Core Principles of Bacterial Autoinducer Systems

Creator:: Hense, Burkhard A. and Schuster, Martin
Abstract:: Autoinduction (AI), the response to self-produced chemical signals, is widespread in the bacterial world. This process controls vastly different target functions, such as luminescence, nutrient acquisition, and biofilm formation, in different ways and integrates additional environmental and physiological cues. This diversity raises questions about unifying principles that underlie all AI...
Resource Type:: Article
Full Text:: Principles of Bacterial Autoinducer Systems Hense, B. A., & Schuster, M. (2015). Core Principles of

Retrieval of Cloud Properties for Partly Cloudy Imager Pixels

Creator:: Coakley, James A. Jr., Friedman, Michael A., and Tahnk, William R.
Abstract:: Retrievals of cloud properties from satellite imagery often invoke the assumption that the fields of view are overcast when cloud-contaminated, even though a significant fraction are only partially cloud-covered. The overcast assumption leads to biases in the retrieved cloud properties: cloud amounts and droplet effective radii are typically overestimated, while...
Resource Type:: Article
Full Text:: JAMES A. COAKLEY JR., MICHAEL A. FRIEDMAN,* AND WILLIAM R. TAHNK College of Oceanic and Atmospheric

Aerosol and cloud property relationships for summertime stratiform clouds in the northeastern Atlantic from Advanced Very High Resolution Radiometer observations

Creator:: Matheson, Mark A., Coakley, James A., and Tahnk, William R.
Abstract:: Advanced Very High Resolution Radiometer (AVHRR) 4-km data collected over the northeastern Atlantic off the coast of the Iberian Peninsula for May to August 1995 were used to investigate the feasibility of empirically deriving estimates of the aerosol indirect radiative forcing. A retrieval scheme was used to derive cloud visible...
Resource Type:: Article
Full Text:: observations Mark A. Matheson, James A. Coakley Jr., and William R. Tahnk College of Oceanic and Atmospheric

Multiyear Advanced Very High Resolution Radiometer observations of summertime stratocumulus collocated with aerosols in the northeastern Atlantic

Creator:: Matheson, Mark A., Coakley, James A., and Tahnk, William R.
Abstract:: Advanced Very High Resolution Radiometer (AVHRR) 4-km data were collected over the northeast Atlantic for May–August 1995–1999. Aerosol optical depth at 0.55 μm was retrieved in pixels identified as being cloud-free ocean. In pixels identified as containing clouds from single-layered, low-level cloud systems over oceans, the following cloud properties were...
Resource Type:: Article
Full Text:: observations of summertime stratocumulus collocated with aerosols in the northeastern Atlantic Mark A

Improved Calibration Coefficients for NOAA-12 and NOAA-15 AVHRR Visible and Near-IR Channels

Creator:: Tahnk, William R. and Coakley, James A. Jr.
Abstract:: A time history of the calibration coefficients for channels 1 and 2 of the Advanced Very High Resolution Radiometer (AVHRR) on the NOAA-12 and NOAA-15 spacecraft is presented. The history is based on reflectances observed for the interior zones of the Antarctic and Greenland ice sheets previously obtained with the...
Resource Type:: Article
Full Text:: , A. Jayaraman, P. K. Quinn, and D. Tanré, 2002: Aerosol optical depth and direct radiative forcing

Chronic exposure of killifish to a highly polluted environment desensitizes estrogen–responsive reproductive and biomarker genes

Creator:: Bugel, Sean M., Bonventre, Josephine A., White, Lori A., Tanguay, Robert L., and Cooper, Keith R.
Abstract:: Reproductive and endocrine disruption is commonly reported in aquatic species exposed to complex contaminant mixtures. We previously reported that Atlantic killifish (Fundulus heteroclitus) from the chronically contaminated Newark Bay, NJ, exhibit multiple endocrine disrupting effects, including inhibition of vitellogenesis (yolk protein synthesis) in females and false negative vitellogenin biomarker responses...
Resource Type:: Article
Full Text:: Chronic exposure of killifish to a highly polluted

ScholarsArchive@OSU

Aerosol optical depths and direct radiative forcing for INDOEX derived from AVHRR: Theory

Indian Ocean Experiment: An integrated analysis of the climate forcing and effects of the great Indo-Asian haze

Retrieval of cloud droplet size from visible and microwave radiometric measurements during INDOEX: Implication to aerosols’ indirect radiative effect

Effects of threshold retrievals on estimates of the aerosol indirect radiative forcing

Core Principles of Bacterial Autoinducer Systems

Retrieval of Cloud Properties for Partly Cloudy Imager Pixels

Aerosol and cloud property relationships for summertime stratiform clouds in the northeastern Atlantic from Advanced Very High Resolution Radiometer observations

Multiyear Advanced Very High Resolution Radiometer observations of summertime stratocumulus collocated with aerosols in the northeastern Atlantic

Improved Calibration Coefficients for NOAA-12 and NOAA-15 AVHRR Visible and Near-IR Channels

Chronic exposure of killifish to a highly polluted environment desensitizes estrogen–responsive reproductive and biomarker genes

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