Search Results - "Logan, JA"

Effective monitoring as a basis for adaptive management: a case history of mountain pine beetle in Greater Yellowstone Ecosystem whitebark pine by Logan, JA, Macfarlane, WW, Willcox, L

“…With reference to massive outbreaks of a variety of bark beetles occurring across the forests of western North America, it is stressed that an accurate…”
Get full text

An assessment of biofuel use and burning of agricultural waste in the developing world by Yevich, Rosemarie, Logan, Jennifer A.

“…We present an assessment of biofuel use and agricultural field burning in the developing world. We used information from government statistics, energy…”
Get full text

Whitebark pine vulnerability to climate-driven mountain pine beetle disturbance in the Greater Yellowstone Ecosystem by Logan, Jesse A, Macfarlane, William W, Willcox, Louisa

“…Widespread outbreaks of mountain pine beetles (MPB) are occurring throughout the range of this native insect. Episodic outbreaks are a common occurrence in the…”
Get full text

Impacts of climate change from 2000 to 2050 on wildfire activity and carbonaceous aerosol concentrations in the western United States by Spracklen, D. V., Mickley, L. J., Logan, J. A., Hudman, R. C., Yevich, R., Flannigan, M. D., Westerling, A. L.

“…We investigate the impact of climate change on wildfire activity and carbonaceous aerosol concentrations in the western United States. We regress observed area…”
Get full text

Smoke injection heights from fires in North America: analysis of 5 years of satellite observations by Val Martin, M., Logan, J. A., Kahn, R. A., Leung, F.-Y., Nelson, D. L., Diner, D. J.

“…We analyze an extensive record of aerosol smoke plume heights derived from observations over North America for the fire seasons of 2002 and 2004–2007 made by…”
Get full text

Assessing the Impacts of Global Warming on Forest Pest Dynamics by Logan, Jesse A., Régnière, Jacques, Powell, James A.

“…Forest insects and pathogens are the most pervasive and important agents of disturbance in North American forests, affecting an area almost 50 times larger…”
Get full text

An innovative aerial assessment of Greater Yellowstone Ecosystem mountain pine beetle-caused whitebark pine mortality by Macfarlane, William W, Logan, Jesse A, Kern, Wilson R

“…An innovative aerial survey method called the Landscape Assessment System (LAS) was used to assess mountain pine beetle (MPB; Dendroctonus ponderosae )-caused…”
Get full text

Changes in ozone over Europe: Analysis of ozone measurements from sondes, regular aircraft (MOZAIC) and alpine surface sites by Logan, J. A., Staehelin, J., Megretskaia, I. A., Cammas, J.-P., Thouret, V., Claude, H., De Backer, H., Steinbacher, M., Scheel, H.-E., Stübi, R., Fröhlich, M., Derwent, R.

“…We use ozone observations from sondes, regular aircraft, and alpine surface sites in a self‐consistent analysis to determine robust changes in the time…”
Get full text

Global budget of CO, 1988–1997: Source estimates and validation with a global model by Duncan, B. N., Logan, J. A., Bey, I., Megretskaia, I. A., Yantosca, R. M., Novelli, P. C., Jones, N. B., Rinsland, C. P.

“…We present a model study of carbon monoxide for 1988–1997 using the GEOS‐Chem 3‐D model driven by assimilated meteorological data, with time‐varying emissions…”
Get full text

An analysis of ozonesonde data for the troposphere: Recommendations for testing 3-D models and development of a gridded climatology for tropospheric ozone by Logan, Jennifer A.

“…I present an analysis of ozonesonde data, synthesizing what is known about the distribution of tropospheric ozone. Major features of the distribution are…”
Get full text

Interannual and seasonal variability of biomass burning emissions constrained by satellite observations by Duncan, Bryan N., Martin, Randall V., Staudt, Amanda C., Yevich, Rosemarie, Logan, Jennifer A.

“…We present a methodology for estimating the seasonal and interannual variation of biomass burning designed for use in global chemical transport models. The…”
Get full text

Global estimates of CO sources with high resolution by adjoint inversion of multiple satellite datasets (MOPITT, AIRS, SCIAMACHY, TES) by Kopacz, M., Jacob, D. J., Fisher, J. A., Logan, J. A., Zhang, L., Megretskaia, I. A., Yantosca, R. M., Singh, K., Henze, D. K., Burrows, J. P., Buchwitz, M., Khlystova, I., McMillan, W. W., Gille, J. C., Edwards, D. P., Eldering, A., Thouret, V., Nedelec, P.

“…We combine CO column measurements from the MOPITT, AIRS, SCIAMACHY, and TES satellite instruments in a full-year (May 2004–April 2005) global inversion of CO…”
Get full text

Nitrogen oxides and PAN in plumes from boreal fires during ARCTAS-B and their impact on ozone: an integrated analysis of aircraft and satellite observations by Alvarado, M. J., Logan, J. A., Mao, J., Apel, E., Riemer, D., Blake, D., Cohen, R. C., Min, K.-E., Perring, A. E., Browne, E. C., Wooldridge, P. J., Diskin, G. S., Sachse, G. W., Fuelberg, H., Sessions, W. R., Harrigan, D. L., Huey, G., Liao, J., Case-Hanks, A., Jimenez, J. L., Cubison, M. J., Vay, S. A., Weinheimer, A. J., Knapp, D. J., Montzka, D. D., Flocke, F. M., Pollack, I. B., Wennberg, P. O., Kurten, A., Crounse, J., Clair, J. M. St, Wisthaler, A., Mikoviny, T., Yantosca, R. M., Carouge, C. C., Le Sager, P.

“…We determine enhancement ratios for NOx, PAN, and other NOy species from boreal biomass burning using aircraft data obtained during the ARCTAS-B campaign and…”
Get full text

Global modeling of tropospheric chemistry with assimilated meteorology: Model description and evaluation by Bey, Isabelle, Jacob, Daniel J., Yantosca, Robert M., Logan, Jennifer A., Field, Brendan D., Fiore, Arlene M., Li, Qin-Bin, Liu, Hong-Yu, Mickley, Loretta J., Schultz, Martin G.

“…We present a first description and evaluation of GEOS-CHEM, a global three-dimensional (3-D) model of tropospheric chemistry driven by assimilated…”
Get full text

Fire and biofuel contributions to annual mean aerosol mass concentrations in the United States by Park, Rokjin J., Jacob, Daniel J., Logan, Jennifer A.

“…We estimate the contributions from biomass burning (summer wildfires, other fires, residential biofuel, and industrial biofuel) to seasonal and annual aerosol…”
Get full text

Intercomparison methods for satellite measurements of atmospheric composition: application to tropospheric ozone from TES and OMI by Zhang, L., Jacob, D. J., Liu, X., Logan, J. A., Chance, K., Eldering, A., Bojkov, B. R.

“…We analyze the theoretical basis of three different methods to validate and intercompare satellite measurements of atmospheric composition, and apply them to…”
Get full text

Asian chemical outflow to the Pacific in spring: Origins, pathways, and budgets by Bey, Isabelle, Jacob, Daniel J., Logan, Jennifer. A., Yantosca, Robert M.

“…We analyze the Asian outflow of CO, ozone, and nitrogen oxides (NOx) to the Pacific in spring by using the GEOS‐CHEM global three‐dimensional model of…”
Get full text

A data-mining approach to associating MISR smoke plume heights with MODIS fire measurements by Mazzoni, Dominic, Logan, Jennifer A., Diner, David, Kahn, Ralph, Tong, Lingling, Li, Qinbin

“…Satellites provide unique perspectives on aerosol global and regional spatial and temporal distributions, and offer compelling evidence that visibility and air…”
Get full text

Southern Hemisphere Additional Ozonesondes (SHADOZ) 1998–2000 tropical ozone climatology 1. Comparison with Total Ozone Mapping Spectrometer (TOMS) and ground-based measurements by Thompson, Anne M., Witte, Jacquelyn C., McPeters, Richard D., Oltmans, Samuel J., Schmidlin, Francis J., Logan, Jennifer A., Fujiwara, Masatomo, Kirchhoff, Volker W. J. H., Posny, Françoise, Coetzee, Gert J. R., Hoegger, Bruno, Kawakami, Shuji, Ogawa, Toshihiro, Johnson, Bryan J., Vömel, Holger, Labow, Gordon

“…A network of 10 southern hemisphere tropical and subtropical stations, designated the Southern Hemisphere Additional Ozonesondes (SHADOZ) project and…”
Get full text

Insect seasonality: circle map analysis of temperature-driven life cycles by Powell, James A., Logan, Jesse A.

“…Maintaining an adaptive seasonality, with life cycle events occurring at appropriate times of year and in synchrony with cohorts and ephemeral resources, is a…”
Get full text