Although nonnegative matrix factorization (NMF) is widely used, some matrix factorization
methods result in misleading results and waste of computing resources due to lack of timely …

We combine observations from Western USA and inverse modelling to constrain global
atmospheric emissions of microplastics (MPs) and microfibers (MFs). The latter are used …

Temporal absences in observation records lead to release losses during the source term
inversions of atmospheric radionuclide emissions. Consequently, objectively-estimated …

Eleven years after the Fukushima accident, independent objective estimates of the
atmospheric 137 Cs release still suffer from discontinuities such as negative release terms …

The source term of atmospheric radionuclide releases is essential for the hazardous
consequence assessment and emergency response. However, the artificial release …

Modern society is confronted with emerging threats from chemical, biological, and
radiological (CBR) hazardous substances, which are intensively utilized in the chemical …

Inverse modelling of the emissions of atmospheric species and pollutants has significantly
progressed over the past 15 years. However, in spite of seemingly reliable estimates, the …

Release rate estimation is crucial for the consequence assessment and emergency decision-
making in nuclear accidents. However, inevitable model biases can lead to significant …

In the fall of 2011, iodine-131 (131 I) was detected at several radionuclide monitoring
stations in central Europe. After investigation, the International Atomic Energy Agency (IAEA) …

Release rate estimation is a vital means of revealing the emission process of radionuclides
and assessing the environmental consequences in an emergency. Inverse modeling is …