Tag: Numerical Modeling and Data Assimilation

Isaac Moradi smiles for the camera, wearing a red gridded button-up and a red tie

Congratulations to Isaac Moradi, Newly Elected Member of the University State Senate

February 9, 2022

ESSIC/CISESS Research Scientist Isaac Moradi has been elected to the University State Senate as one of the Professional-Track Faculty members. The University Senate, composed of faculty, staff, students, and administrators, is one of the largest and most influential governing bodies at the University of Maryland. As a member of the senate, Moradi will help advise the University President on campus policy matters and concerns, including education, budget, personnel, campus-community, long range plans, facilities, and faculty, staff and student affairs.

Using Machine Learning to Improve Snow Cover Fraction Observations

January 25, 2022

ESSIC/CISESS scientists Soni Yatheendradas and Sujay Kumar are co-authors on a paper in Journal of Hydrometeorology titled, “A novel Machine Learning-based gap-filling of fine-resolution remotely sensed snow cover fraction data by combining downscaling and regression”.

Figure 1 | Flooding in July 2021 caused mass evacuation in Weihui, Henan province, in China.

Extreme Rainfall Slows the Global Economy

January 13, 2022

Xin-Zhong Liang was recently published in Nature’s “News and Views” section giving his insight on new research that reported a comprehensive assessment of changes in gross regional product (GRP) relating to excessive precipitation. The study concluded that increases in the numbers of wet days and in extreme daily rainfall dramatically reduces worldwide macroeconomic growth rates.

ESSIC/CISESS Presents at 2021 AGU Fall Meeting

January 11, 2022

ESSIC/CISESS had several talks, e-lightning sessions, posters, virtual town halls, and tutorials at this year’s American Geophysical Union (AGU) Fall Meeting, held in New Orleans and online from December 13 to 17.

Figure: Flowchart of the satellite and near space platform simulator.

Orbit Simulator for Satellite and Near Space Platforms

November 22, 2021

ESSIC/CISESS Scientists Likun Wang, Ross Hoffman and Kayo Ide have a new manuscript accepted for publication at the Journal of Atmospheric and Oceanic Technology titled “Orbit Simulator for Satellite and Near Space Platforms Supporting Observing System Simulation Experiments”.

Moradi is Co-I of NASA Proposal Developing A New Satellite Instrument

November 11, 2021

Traditional earth-observing microwave instruments utilize heterodyne receivers for measuring the radiance emitted by the earth and its atmosphere. These instruments which indirectly measure atmospheric temperature, water vapor, clouds, as well as surface information, have played an important role in improving the NWP weather forecasts and reanalyses, such as MERRA generated by GMAO. However, because of limitations in current microwave technologies in simultaneously processing an ultra-wide band (20-200 GHz) at high spectral resolutions, the number of channels for the current microwave instruments is very limited (e.g., 22 channels for ATMS and less for most other MW instruments).

ESSIC Holds 1st AI/ML Workshop: On the Pathway to a Digital Earth

October 28, 2021

Last month, researchers from the NASA Goddard Space Flight Center (GSFC) and the University of Maryland (UMD) Earth System Science Interdisciplinary Center (ESSIC) gathered to explore the challenges and opportunities in applying machine learning and artificial intelligence in Earth systems science.

Moradi Speaks to Howard County Interns

October 27, 2021

ESSIC Research Scientist Isaac Moradi presented a talk on October 19, 2021 as part of the Howard County High Schools G/T Intern/Mentor program on the Earth and Space Science fundamentals.

Moradi Speaks on Tropical Cyclones at International Conference

October 18, 2021

Isaac Moradi (ESSIC/GMAO) presented a talk entitled “Assimilation of microwave radiances over the rainbands of tropical cyclones” in the WCRP-WWRP Joint Symposium on Data Assimilation and Reanalysis.

UV Surface Reflectance from OMPS Nadir Mapper (NM) Radiance—Simulation and Assimilation

October 1, 2021

ESSIC/CISESS scientists Christopher Grassotti and Xingming Liang are co-authors in a recently published study that documents the first ultraviolet radiance assimilation for atmospheric ozone in the troposphere and stratosphere. The paper, titled “Experimental OMPS Radiance Assimilation through One-Dimensional Variational Analysis for Total Column Ozone in the Atmosphere”, was published in Remote Sensing and includes co-authors from the NOAA/NESDIS Center for Satellite Applications and Research.