GOES Cloud Products and Cloud Studies
Anthony J. Schreiner , Timothy J. Schmit , W. Paul Menzel , Jun Li , James A. Jung , Steven A. Ackerman , Wayne F. Feltz , Robert M. Aune
Cooperative Institute for Meteorological Satellite Studies (CIMSS)
The Geostationary Operational Environmental Satellite (GOES) series of satellite platforms includes two Infrared (IR) radiometers, the Imager and the Sounder
instruments. Radiance information has been available for approximately ten years. From 1994 through the present GOES Sounder data are available hourly over
the CONtinental United States (CONUS) and the immediate surrounding waters at approximately 10 km spatial resolution. In 2001 the launch of GOES-12
offered a slightly different suite of spectral bands at approximately four km horizontal resolution. This new Imager instrument replaced the 12.0 m IR dirty
window band with a 13.3 m CO2 absorption band. The Sounder instrument has not modified its suite of 18 IR bands and 1 Visible band since the launch of
GOES-8 in 1994.
Due to its length of service (ten plus years to date), routine data availability (hourly information for the Sounder and thirty minute hemispherical coverage for
the Imager), and spatial resolution (10 and 4 km at the sub-point, respectively for the Sounder and Imager) it is now possible to examine cloud trends over that
period of time. To some extent this has already been done for the GOES Sounder and will be shown over several regions within the GOES Sounder coverage.
Additional diurnal of characteristics of high clouds will also be shown.
Technique is based on a
simple assumption that
the all clouds have an
ECA of 1.0 (or are
infinitely thick), and
therefore the radiating
temperature of the cloud,
Tbc, in the 11.0 m
at the top of the cloud are
the same. This technique works well for thick clouds, but is less than perfect
for semi-transparent clouds.
All cloud trends results are based on GOES Sounder radiance data using the CO 2 Absorption
and IR Window Techniques, and High cloudiness is defined as 300 hPa to 100 hPa (Schreiner,
et al. 2001).
Monthly Change in Cloudiness over Total Region
Snow, fire, fog
Retrieval, Clouds, Snow, Cloud-Clearing
Retrieval, Clouds, Cloud-Clearing*
* For GOES-12 Band 3 has been modified, Band 5 eliminated, and Band 6 added.
During the Atlantic THORPEX Regional Campaign (ATReC, Dec.
2003) cloud top information was measured using a Cloud Physics
% All Levels
% Low Cldy
% Mid Cldy
% High Cldy
Comparisons of lidar measured cloud top height (black) to the GOES12 Imager Cloud Product (red) and GOES-12 Sounder Cloud Product
(blue) along a 5 December 2003 flight track.
Recent results show a strong annual trend of high clouds over the CONUS
using GOES Sounder radiance information.
Annual max of high clouds during the late summer/early fall over the CONUS
is driven by the increased frequency of high clouds in the Gulf of Mexico region.
Diurnal trends can be seen in both the effective cloud amount for high clouds.
It is now possible to determine the change in diurnal cloud trends using either
the GOES Sounder or Imager or both radiance information.
Nieman, S.J., J. Schmetz and W.P. Menzel, 1993: A comparison of several techniques to assign heights to cloud tracers. J. Appl. Meteor., 32, 1559-1568.
Schreiner, A.J., T.J. Schmit and W.P. Menzel, 2001: Observations and trends of clouds based on GOES sounder data. J. Geophys. Res., 106, 20349-20363.
Diurnal Change of Effective Cloud Amount over Central Plains for High Clouds Only
However, because of the indeterminacy of the order of output to stdout, in most cases only a single process/thread will be used for all output to stdout other than debugging output. ... Define the lock variables . Initialize the lock...
History Development of DVM Opinions by stakeholders UNFCCC workshop (9-10 Sep 08) DOE/AIE coordination forum Public call on nature and purpose of DVM (5 Dec 08 - 15 Jan 09) Decision at JISC 14 Develop DVM Aiming to adopt at...
* Life of Binaries Overview Compiler Source Code Linker Binary Binary Loader Libraries Libraries Libraries Running Program * Source Code Source Code Object File Object File Object File Mega-disclaimer I never had a compilers class :( It was either that...
5580 SAYILI ÖZEL ÖĞRETİM KURUMLARI KANUNU BİRİNCİ BÖLÜM Amaç, Kapsam ve Tanımlar Amaç ve kapsam MADDE 1- Bu Kanunun amacı, Türkiye Cumhuriyeti uyruklu gerçek kişiler, özel hukuk tüzel kişileri veya özel hukuk hükümlerine göre yönetilen tüzel kişiler tarafından açılacak özel...
Dramatic Irony: Review Definition. Why is Proctor struck by Hale's declaration that "some secret blasphemy" (946-947) has caused all of the confusion? Although Abigail does not appear in this act, her presence is undeniable. Identify and explain the moment in...
Mineral names used as modifiers of rock names should be listed in order of increasing modal composition, with the least to the left. Biotite hornblende granite has more hornblende than biotite. The most common chemical modifier is "alkali", and others...