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You are here: GES DISC Home News The May 2014 issue of The Giovanni News is online

The May 2014 issue of The Giovanni News is online

Lightning and NO2 in Africa, rain and floods in Florida, drought and snow in California

The May 2014 issue of The Giovanni News is online

The highlighted area of the Sierra Nevada Mountains was used to generate a time-series of snow mass, vital to the water interests in California.

The May 2014 issue of The Giovanni News is online


The May 2014 issue of The Giovanni News is online.  The issue has three feature articles and a short Giovanni-4 development update.


Research Highlight:  The research highlight for May is a presentation given at the 23rd International Lightning Detection Conference and 5th International Lightning Meteorology Conference.  In their presentation, D.J. Allen and his co-authors investigated the use of different lightning detection methods (ground-based and satellite) and examined nitrogen dioxide (NO2) concentrations over western Africa. This effort was designed to determine if lightning-produced NO2 could be detected by satellite.  Giovanni was used to produce maps of NO2 and aerosol optical depth;  the latter data product was used to examine correlations between NO2 and biomass burning.  Satellite lightning data were acquired from the Optical Transient Detector (OTD) on the MicroLab-1 satel-lite and the Lightning Imaging Sensor (LIS) on the Tropical Rainfall Measuring Mission (TRMM) satellite.

Record Rains Flood Florida Panhandle:  The TRMM Multi-Satellite Precipitation Analysis in Real Time (TMPA-RT) data product provided a depiction of the record rainfall that caused massive flooding around Pensacola, Florida, in late April. 

The State of the Sierra Snowpack:   Modern Era Retrospective-analysis for Research and Applications (MERRA) Snow Mass data provides a multi-year time series showing the highs and lows of snowfall in the Sierra.  Drought conditions in California have reduced the snowpack in the Sierras – which large numbers of Californians rely on for their water supply and which farmers need for agricultural irrigation – to a very low level.  The time series shows that the snow mass in the Sierra Nevada mountains varies year to year, and the low level this year is due to three straight years of below-average winter snow mass.


Read the May 2014 issue of The Giovanni News (PDF)


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Last updated: May 30, 2014 03:24 PM ET