Experiments have been done to confirm the previously reported effect of indoleacetic acid (IAA) on the rate of CO(2) assimilation in bean leaves. It was shown that spraying the leaves of a variety of plants caused an increase in the rate of CO(2) assimilation from 30% to 100% during the half-hour to 1 hour period following spraying. The only plant tested which did not show such an effect was co...

Leaf area index (LAI) is a major indicator for crop growth monitoring and yield estimation. Data assimilation as an effective tool for crop LAI estimation fully considers the properties of actual observations and physical model simulations. In this work, we present a new data assimilation scheme, introducing a very fast simulated annealing (VFSA) optimization algorithm into the process of crop ...

Diel patterns of carbon and nitrogen assimilation were investigated in 5 taxonomically diverse species of unicellular algae grown in NH:-limited cyclostats (12 .12 L: D). Calculated 24 h average rates of N-assimilation based on C-14 incorporation into protein overestimated the actual rate by an average of 24 ? 27 %. Overeshmation of carbon assimilation by the C-14 method (16 i19 "h) accounted f...

To improve the accuracy of winter wheat yield estimation, the Crop Environment Resource Synthesis for Wheat (CERES-Wheat) model with an assimilation strategy was performed by assimilating measured or remotely-sensed leaf area index (LAI) values. The performances of the crop model for two different assimilation methods were compared by employing particle filters (PF) and the proper orthogonal de...

0. Introduction In several Latin American dialects, Spanish obstruent consonants participate in a process of partial voicing assimilation when they appear in syllable final position. (1) /raskar/ à [rÜ as.kar] 'to scratch' /rasgar/ à [rÜ as z .Far] 1 'to rip' /admirar/ à [aD.mi.rar] 'to admire' /adxuntar/ à [aD T .xun5 .tar] 'to adjoin' In this paper, I develop a novel analysis of this process ...

Data assimilation has became an useful tool to reanalyse atmospheric fields. The assimilation produces 4dimensional, quality controlled fields that can offer many advantages, compared to sparse observations, in exploring physical phenomena. During the recent Framework 5 Assimilation of Envisat Data (ASSET) project, an intercomparison was made of ozone analyses from several assimilation systems....

Special Issue Pankaj Setia University of Arkansas [email protected] Monika Setia Duke-NUS Graduate Medical School [email protected] Ranjani Krishnan Michigan State University [email protected] Vallabh Sambamurthy Michigan State University [email protected] Volume 12, Special Issue, pp. 274-298, March 2011 The Effects of the Assimilation and Use of IT Applications on Financial ...

Lightning measurements from the Geostationary Lightning Mapper (GLM) that will be aboard the Geostationary Operational Environmental Satellite – R Series will bring new information that can have the potential for improving the initialization of numerical weather prediction models by assisting in the detection of clouds and convection through data assimilation. In this study we focus on investig...

Data assimilation of turbulent signals is an important challenging problem because of the extremely complicated large dimension of the signals and incomplete partial noisy observations which usually mix the large scale mean flow and small scale fluctuations. Due to the limited computing power in the foreseeable future, it is desirable to use multiscale forecast models which are cheap and fast t...

Recently, a number of investigations have been made that point to the robust effectiveness of the Ensemble Kalman Filter (EnKF) in convective-scale data assimilation. These studies have focused on the assimilation of ground-based Doppler radar observations (i.e. radial velocity and reflectivity). The present study differs from these investigations in two important ways. First, in anticipation o...