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Filters: Sites: BR-Sa3

Publications Found: 18

The Spatial Variability Of Actual Evapotranspiration Across The Amazon River Basin Based On Remote Sensing Products Validated With Flux Towers
Paca, V. H., Espinoza-Dávalos, G. E., Hessels, T. M., Moreira, D. M., Comair, G. F., Bastiaanssen, W. G.

Actual evapotranspiration (ET) is a major component of the water balance. While several international flux measurement programs have been executed in the tropical rain forest of the Amazon, those measurements represent the evaporative process at a few selected sites only. The aim of this study is to obtain the spatial distribution …

Journal: Ecological Processes, Volume 8 (1): 20 (2019), ISBN . DOI: 10.1186/s13717-019-0158-8 Sites: BR-Ma2, BR-Sa1, BR-Sa3

Journal: Ecological Processes, Volume 8 (1): (2019), ISBN . DOI: https://doi.org/10.1186/s13717-019-0158-8 Sites: BR-Ma2, BR-Sa1, BR-Sa3

Temporal Dynamics Of Aerodynamic Canopy Height Derived From Eddy Covariance Momentum Flux Data Across North American Flux Networks
Chu, H., Baldocchi, D. D., Poindexter, C., Abraha, M., Desai, A. R., Bohrer, G., Arain, M. A., Griffis, T., Blanken, P. D., O'Halloran, T. L., Thomas, R. Q., Zhang, Q., Burns, S. P., Frank, J. M., Christian, D., Brown, S., Black, T. A., Gough, C. M., Law, B. E., Lee, X., Chen, J., Reed, D. E., Massman, W. J., Clark, K., Hatfield, J., Prueger, J., Bracho, R., Baker, J. M., Martin, T. A.

Aerodynamic canopy height (ha) is the effective height of vegetation canopy for its influence on atmospheric fluxes and is a key parameter of surface‐atmosphere coupling. However, methods to estimate ha from data are limited. This synthesis evaluates the applicability and robustness of the calculation of ha from eddy covariance …

Journal: Geophysical Research Letters, Volume 45: 9275–9287 (2018), ISBN . DOI: 10.1029/2018GL079306 Sites: BR-Sa1, BR-Sa3, CA-Ca1, CA-Ca2, CA-Ca3, CA-Cbo, CA-ER1, CA-Gro, CA-Man, CA-NS1, CA-NS2, CA-NS3, CA-NS4, CA-NS5, CA-Oas, CA-Obs, CA-Ojp, CA-Qfo, CA-TP1, CA-TP3, CA-TP4, CA-TPD, US-Blo, US-Bn1, US-Bn2, US-Br1, US-Br3, US-Ced, US-CPk, US-CRT, US-Dix, US-Dk2, US-Dk3, US-Fmf, US-Fuf, US-GBT, US-GLE, US-GMF, US-Ha1, US-Ha2, US-Ho2, US-Ho3, US-IB1, US-IB2, US-KL1, US-KL2, US-KL3, US-KM1, US-KM2, US-KM3, US-KM4, US-Me2, US-Me3, US-Me4, US-Me5, US-Me6, US-MMS, US-MRf, US-NC1, US-NC2, US-Ne1, US-Ne2, US-Ne3, US-NR1, US-Oho, US-Prr, US-Ro1, US-Ro3, US-SB1, US-Shd, US-Skr, US-Slt, US-SP1, US-SP2, US-SP3, US-SRM, US-Srr, US-Syv, US-Ton, US-Tw3, US-Twt, US-UMB, US-UMd, US-Var, US-Vcm, US-WBW, US-Wi0, US-Wi1, US-Wi3, US-Wi4, US-Wi5, US-Wi8, US-Wi9, US-Wrc

Nocturnal Cold Air Drainage And Pooling In A Tropical Forest
Goulden, M. L., Miller, S. D., da Rocha, H. R.

The usefulness of eddy covariance for understanding terrestrial carbon exchange has been hampered by uncertainty over the magnitude and causes of a systematic underestimation of CO₂ efflux on calm nights. We combined in situ measurements of the temperature, wind and CO₂ profile with nocturnal Land Surface Temperature …

Journal: Journal Of Geophysical Research, Volume 111 (D8): n/a-n/a (2006), ISBN . DOI: 10.1029/2005jd006037 Sites: BR-Sa3

Soil Moisture Dynamics In An Eastern Amazonian Tropical Forest
Bruno, R. D., da Rocha, H. R., de Freitas, H. C., Goulden, M. L., Miller, S. D.

We used frequency-domain reflectometry to make continuous, high-resolution measurements for 22 months of the soil moisture to a depth of 10 m in an Amazonian rain forest. We then used these data to determine how soil moisture varies on diel, seasonal and multi-year timescales, and to better understand the quantitative and mechanistic …

Journal: Hydrological Processes, Volume 20 (12): 2477-2489 (2006), ISBN . DOI: 10.1002/hyp.6211 Sites: BR-Sa3

Nitrous Oxide Fluxes And Nitrogen Cycling Along A Pasture Chronosequence In Central Amazonia, Brazil
Wick, B., Veldkamp, E., Mello, W. Z. De, Keller, M., Crill, P.

Journal: Biogeosciences, Volume 2 (2): 175-187 (2005), ISBN . DOI: 10.5194/bg-2-175-2005 Sites: BR-Sa1, BR-Sa3

Seasonality Of Water And Heat Fluxes Over A Tropical Forest In Eastern Amazonia
da Rocha, H. R., Goulden, M. L., Miller, S. D., Menton, M. C., Pinto, L. D., de Freitas, H. C., e Silva Figueira, A. M.

We used the eddy covariance technique from July 2000 to July 2001 to measure the fluxes of sensible heat, water vapor, and CO₂ between an old-growth tropical forest in eastern Amazonia and the …

Journal: Ecological Applications, Volume 14 (sp4): 22-32 (2004), ISBN . DOI: 10.1890/02-6001 Sites: BR-Sa3

Effects Of Meteorological Variations On The CO2 Exchange Of A Brazilian Transitional Tropical Forest
Vourlitis, G. L., Priante Filho, N., Hayashi, M. M., Nogueira, J. d., Raiter, F., Hoegel, W., Campelo, Jr, J. H.

The net ecosystem CO₂ exchange (NEE) of a 28–30 m tall transitional (ecotonal) tropical forest of the Brazilian Amazon was quantified using tower-based eddy covariance. Measurements were made …

Journal: Ecological Applications, Volume 14 (sp4): 89-100 (2004), ISBN . DOI: 10.1890/01-6005 Sites: BR-Sa1, BR-Sa3

The Robustness Of Eddy Correlation Fluxes For Amazon Rain Forest Conditions
Kruijt, B., Elbers, J. A., von Randow, C., Araújo, A. C., Oliveira, P. J., Culf, A., Manzi, A. O., Nobre, A. D., Kabat, P., Moors, E. J.

We analyzed errors and uncertainties in time-integrated eddy correlation data for sites in the Amazon. A well-known source of potential error in eddy correlation is through possible advective losses of CO₂emissions during calm nights. There are also questions related to the treatment of low frequencies, non-horizontal …

Journal: Ecological Applications, Volume 14 (sp4): 101-113 (2004), ISBN . DOI: 10.1890/02-6004 Sites: BR-Ma2, BR-Sa1, BR-Sa3

Diel And Seasonal Patterns Of Tropical Forest CO2 Exchange
Goulden, M. L., Miller, S. D., da Rocha, H. R., Menton, M. C., de Freitas, H. C., e Silva Figueira, A. M., de Sousa, C. A.

We used eddy covariance to measure the net exchange of CO₂ between the atmosphere and an old-growth tropical forest in Pará, Brazil from 1 July 2000 to 1 July 2001. The mean air temperature and …

Journal: Ecological Applications, Volume 14 (sp4): 42-54 (2004), ISBN . DOI: 10.1890/02-6008 Sites: BR-Sa3

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