As air quality in the Eastern United States has improved, determining the root cause of air pollution episodes has become more challenging. This not only impacts the ability to reliably forecast pollution episodes but also the development of regulations that will lead to further reductions in ozone and its precursors, such as NOxand volatile organic compounds (VOCs).

Passive aerosol sensors composing the present generation of space-based instrumentation generally permit measurements spanning the majority of the shortwave spectrum, or observations at multiple viewing angles, but rarely both. Moreover, very few of these instruments possess sensitivity to polarization, and those that do lack the accuracy required to fully utilize this quantity.

Goddard Space Flight Center airborne campaigns are highlighted in a recent Capital Weather Gang article in The Washington Post. The article describes the novel coronavirus's impact on scientific research and field campaigns.

Science Highlights

Abrupt decline in tropospheric nitrogen dioxide over China after the outbreak of COVID-19

Learning about biomass-burning aerosol absorption properties from ground-based measurements in Thailand

Reductions in Sulfur Dioxide & Nitrogen Dioxide Air Pollution over South Asia Associated with Efforts to Control the Spread of COVID-19




Earth information is increasingly critical to thriving on our planet.  The science objectives motivate the collection of observations that will also enable significant ACCP applications benefits.  ACCP’s Applications Impact Team (AIT) has identified 14 potential enabled applications as shown.  

ACCP Enabled Applications

Field Campaigns

The NASA African Monsoon Multidisciplinary Analyses (NAMMA) campaign is a field research investigation sponsored by the Science Mission Directorate of the National Aeronautics and Space Administration (NASA).

The East Pacific Origins and Characteristics of Hurricanes field campaign was recently selected. Flights are currently being scheduled for August 2017.

The NASA Micro-Pulse Lidar Network (MPLNET) is a federated network of Micro-Pulse Lidar (MPL) systems designed to measure aerosol and cloud vertical structure, and boundary layer heights. The data are collected continuously, day and night, over long time periods from sites around the world. 

Space Missions

Using advanced radar imaging that will provide an unprecedented, detailed view of Earth, the NASA-ISRO Synthetic Aperture Radar, or NISAR, satellite is designed to observe and take measurements of some of the planet's most complex processes, including ecosystem disturbances, ice-sheet collapse, and natural hazards such as earthquakes, tsunamis, volcanoes and landslides.


Aura (Latin for breeze) was launched July 15, 2004. Aura is part of the Earth Science Projects Division, a program dedicated to monitoring the complex interactions that affect the globe using NASA satellites and data systems. Aura's four instruments study the atmosphere's chemistry and dynamics. The satellite's measurements will enable scientists to investigate questions about ozone trends, air quality changes, and their linkage to climate change.


The Costa Rica Aura Validation Experiment (CR-AVE) is a mission designed to explore the tropical upper troposphere and lower stratosphere (UTLS) and to provide information for comparison to satellite observations.

Research Areas

Climate and weather fluctuations leading to extreme temperatures, storm surges, flooding, and droughts produce conditions that precipitate mosquito-borne disease epidemics directly affecting global public health. Abnormally high temperatures affect populations of mosquito disease vectors by influencing: mosquito survival; susceptibility of mosquitoes to viruses; mosquito population growth rate, distribution, and seasonality; replication and extrinsic incubation period of a virus in the mosquito; and virus transmission patterns and seasonality.

Aerosol dynamics are a global phenomena that affect all aspects of remote sensing from the UV through the near infrared spectrum. Thus it is part of the signal for any remote sensing of vegetation, ocean and atmosphere and is critical for quantifying Earth radiative forcing. Due to the high variability of aerosols over space and time, the contribution to the signal can range from insignificant to dominant. The IPCC has reported that aerosols remain the most uncertain component to quantify the anthropogenic forcing of the earth. 

Disturbance processes such as fire, logging, and insect damage are an integral aspect of how ecosystems change through time. In addition, there is evidence for increased disturbance frequency and altered regrowth patterns due to recent climate change. These changes to disturbance regimes have significant implications for land-climate feedbacks and ecosystem services.



The role of the International Radiation Commission is to promote research into atmospheric radiation as well as application of that research to practical problems. Dr. Lazaros Oreopooulos and Alexander Marshak are members of the International Radiation Commission.

Earth Observatory

Explore the causes and effects of climatic and environmental change through the use of real satellite data.


Studies of the Earth’s atmosphere require a comprehensive set ofobservations that rely on instruments flown on spacecraft, aircraft, andballoons as well as those deployed on the surface.


he Doppler Orbitography by Radiopositioning Integrated on Satellite (DORIS) was developed in France by the Centre National d'Etudes Spatiales (CNES) with the cooperation of Groupe de Recherche en Géodésie Spatiale (GRGS) and the Institut Géographique National (IGN).


G-LiHT enables data fusion studies by providing coincident data in time and space, and provides fine-scale (<1 m) observations over large areas that are needed in many ecosystem studies.



Welcome to the Mesoscale Dynamics & Modeling Group. Our mission is to conduct research to understand the physics and dynamics of atmospheric processes through the use of computer-based simulations and various observations, including satellite remote sensing, aircraft and surface-based in-situ observations.

The Intercomparison of 3D Radiation Codes (I3RC) is an ongoing project initiated in the late 1990s.