This study examines the DigiCORA andGlobal Climate Observing SystemReferenceUpper-Air Network (GRUAN) humidity corrections of Vaisala RS92 radiosondes at three sites over the tropical Indian Ocean and surrounding areas during theDynamics of theMadden–Julian Oscillation (DYNAMO) field campaign in 2011. The proprietary DigiCORA correction algorithm is built into the ground station software provid...

The probability distribution of local relative humidity R in the free troposphere is explored by comparing a simple theoretical calculation with observations from the Global Positioning System (GPS) and the Microwave Limb Sounder (MLS). The calculation is based on a parcel of air that conserves its composition during diabatic subsidence, until it is resaturated by randomly entering a convective...

The horizontal and vertical structure of unusually warm and dry spells (WDS) over the central parts of South America during the winter and post-winter months (JJAS) are studied. During WDS the mean temperature and humidity anomalies over central Brazil are about +4.1C and −13.2%, respectively. The mean duration of WDS is 11 days and their mean frequency is less than one per year during the mont...

Radiosonde humidity data provide the longest record for assessing changes in atmospheric water vapor, but they often contain large discontinuities because of changes in instrumentation and observational practices. In this study, the variations and trends in tropospheric humidity (up to 300 hPa) over China are analyzed using a newly homogenized radiosonde dataset. It is shown that the homogeniza...

introduction dust storms, one type of dust event, are in most cases the result of turbulent winds, including convective haboobs, which raise large quantities of dust from desert surfaces and reduce visibility to less than 1 km. this dust reaches concentrations in excess of 6000 mg m3 in severe events. the major dust source regions are areas of arid and hyper-arid, with mean annual rainfalls of ...

In this study, deep convolutional neural network (CNN) models of stimulated tropical cyclone intensity (TCI), minimum central pressure (MCP), and maximum 2 min mean wind speed at near center (MWS) were constructed based on ocean atmospheric reanalysis, as well Best Track hurricane data over 2014–2018. order to explore the interpretability model structure, sensitivity experiments designed with v...

Central Asia is prone to wildfires, but the relationship between wildfires and climatic factors in this area still not clear. In study, spatiotemporal variation wildfire activities across during 1997–2016 terms of burned (BA) was investigated with Global Fire Emission Database version 4s (GFED4s). The BA region also analyzed. results reveal that more than 90% located Kazakhstan. peak occurs fro...

Herein, we report on molecularly imprinted polymers (MIPs) for detecting formaldehyde vapors in air streams. A copolymer thin film consisting of styrene, methacrylic acid, and ethylene glycol dimethacrylate on quartz crystal microbalance (QCM) yielded a detection limit of 500 ppb formaldehyde in dry air. Surprisingly, these MIPs showed specific behavior when tested against a range of volatile o...