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Snow and Iceby Terri Gregory, SSEC Public Information Coordinator | |||||||
February 2002
Also In
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This issue of
In the
News covers news and events mostly occurring in January 2002. Use images
freely with credit to the Space Science and Engineering Center, University
of WisconsinMadison. Wed appreciate a copy or notice when you
use something.
Heavy Snow and Ice—An unusually wide swath of significant snow cover resulted from a series of winter storms moving northeastward across the central United States from January 29–31. Snow fell across the Great Plains, Midwest, and Great Lakes regions, accumulating as much as 6 to 18 inches in each of the affected states. Along the southeastern edge of the heavy snow band, significant freezing rain resulted in a 13 inch coating of ice across parts of Oklahoma, Kansas and Missouri. This was one of the worst ice storms in Oklahoma history, downing 4000 electric power poles and causing loss of power to a quarter of a million homes and businesses. The translucent nature of this thick ice coating is quite evident on the MODIS true color composite image, in contrast to the brighter white appearance of the snow covered regions immediately to the northwest. (by Scott Bachmeier)
Imagery like
this could help utility companies in remote regions know what areas are
actually ice-covered, so that they could plan their recovery efforts accordingly. This imagery was used in NASAs Earth Observatory Web site on February
5 and in the Web site of the National Weather Services Oklahoma
Office.
--THE QPV* AREA...WETZEL ET. AL....IS REALLY NAILING THIS AND HAS SINCE TUE [*QPV is possible heavy snow, perhaps accompanied by lightning and thunder]
In December
2001, Scott Bachmeier (CIMSS) delivered the Virtual Institute for Satellite
Integration Training (VISIT) instructional component, An Ingredients-Based
Methodology for Forecasting Winter Season Precipitation, to 22 forecast
offices of the U.S. National Weather Service and the Meteorological Service
of Canada. AWS ProgramUWMadisons Jonathan Thom (SSEC) and George Weidner (AOS) traveled far south this January, to Antarctica, where it was summer, with temperatures from about 0 to 30 degrees. They werent on vacation. Thom and Weidner are meteorologists, performing annual maintenance on UWMadisons network of Automatic Weather Stations, vital to forecasters in Antarctica and used world-wide. The harsh Antarctic winds wreak havoc even with these sturdy machines. Every year at least some of them must be checked in person. This year, the National Science Foundation, funding agency for U.S. Antarctic programs, taped their activities. Mark Buckley, multimedia supervisor in McMurdo, arranged the videotaping session for general media purposes as well as stock file footage for our growing video library. There has always been strong media interest in weather related topics and footage. Weidner reported that the taping took place at Minna Bluff, where this shot was taken.
B-15 freeThe sea ice surrounding monster iceberg B-15 (shaped like a coke bottle in this image) finally broke up in January, deep into Antarcticas summer. It was unusually thick this year, because iceberg B-15 and others shaded the area, keeping it much cooler than usual. All this made it impossible for penguins to reach normal feeding areas. Rookeries on the north side of Ross Island are devastated.
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ADR Rides AgainIn July 2001, NASA approved a new mission, Astro-E2, to replace the Astro-E spacecraft that never reached orbit in 2000. Like that first mission, Astro-E2 is a collaboration with Japans Space Science Agency ISAS and will be launched at Kagoshima, Japan in February 2005. This means that the spare Adiabatic Demagnetization Refrigerator (ADR) that SSEC delivered to NASAs Goddard Space Flight Center a couple years ago will be used as the final stage of the cooling unit in the X-Ray Spectrometer (XRS), the Astro-E2 primary instrument. The XRS is a new generation of X-Ray Spectrometer that will measure the spectrum of celestial objects in the soft X-ray range (200 to 10,000 eV), at a much higher resolution than has been possible up to now. SSECs ADR crew (primarily Dave Jones and Tony Wendricks) will fabricate a new spare ADR salt pill this year.
The ADR is what keeps the XRS detectors cold enough to work. Overheating means death to the mission. The ADR is a complicated little refrigerator. At the heart of the ADR is the salt pill, fabricated by SSEC, that works inside a liquid helium bath to keep the XRS cold, at temperatures close to absolute zero. When successfully placed into orbit by ISAS, the ADR will become the coldest known manmade object in space! | ||||||
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AniSDirections
for the popular Java applet, AniS (for AnimationS), have been translated
into Spanish for meteorological use by Francisco Martín León
of Servicio de Técnicas de Análisis y Predicción
(STAP). León also has formed a Spanish AniS Club. AniS makes it
possible to animate all sorts of data in many ways, including looping
and zooming in satellite imagery. It enables overlays, fades, toggles
and portals. The software, developed out of work done for the Virtual
Institute for Satellite Integration Training, is available free on the
Web. It is used widely, including by the National Weather Service, to
animate radar loops. McIDAS
Services States News Service reported on January 24 that
University of Wisconsins Space Science & Engineering Center,
Madison, won a $330,556 contract from NASAs Langley Research Center,
Hampton, Va., for man-computer interactive data analysis system [sic].
The multi-year contract for McIDAS services and data was published in
a list of federal contracts of more than $100,000 awarded to Wisconsin
organizations. Weather Research GOES-9
Sample ImageryUntil
recently, the Geostationary Operational Environmental Satellite GOES-9
was being stored in orbit. In November 2001, NOAA reactivated it to test
as a possible replacement for a Japanese satellite. Tim Schmit, Paul Menzel
and Gary Wade, all NOAA personnel stationed at SSEC, and Jim Nelson (CIMSS)
presented imagery from the satellite that summarized its current performance.
The quality of the radiances from both Imager and Sounder instruments
was addressed, along with several products (retrieval profiles and cloud
information) derived from Sounder data. The main limitation of GOES-9
is high frequency oscillation in the Imager full-resolution visible band;
yet overall, the meteorological information remains good. A sampling of
data products and imagery is available on the CIMSS Web page. GOES-12 TestsJim Nelson has showed that the newest U.S. geostationary satellite, GOES-12, should produce more accurate retrievals of total precipitable water than older satellites GOES-8 and GOES-10. Total precipitable water is the amount of water vapor that could condense into rain above a given point on earth. Looked at more simply, it is how deep a puddle of water youd stand in if all the water vapor over your head would become rain. Using data from October 8, 2001 through December 16, 2001, GOES-12 measurements were approximately 0.5 mm (millimeters) closer to radiosondes (measurements from weather balloons are accepted as truth) than GOES-8, and 0.25 mm better than GOES-10. GOES
for EuropeThe
European Centre for Medium-range Weather Forecasts (ECMWF) is monitoring
an experimental GOES product produced by Tim Schmit (NOAA) and Tony Schreiner
(CIMSS). Preliminary results of Clear Sky Brightness Temperature data
are positive. The ECMWF plans to monitor the data operationally by the
end of January 2002. The next step, which has already begun, is assimilation
experiments. The Environmental Modeling Center of the U.S. National Centers
for Environmental Prediction is also bringing the experimental GOES Imager
clear-sky brightness temperature information into their operational data
tanks, although the data are not yet being assimilated.
GOES WorkThe CIMSS group devoted to GOES satellite applications has parameterized (measured precisely) surface emissivity for a set of experimental data retrievals. These retrievals, which included the effects of surface emissivity (along with several other changes) were compared to those generated with the routine GOES algorithm. Results showed that the retrievals with the experimental algorithm were slightly improved (for most vertical levels) over the routine retrievals, where surface emissivity effects are treated less rigorously. These results confirm the notion that surface emissivity must be accounted for, especially in climate and weather forecast models, because surface attributes affect atmospheric temperature and moisture. The verification consisted of 1291 radiosonde/retrieval comparisons for the months of May and June 2000. (Gail Bayler, Tim Schmit, Youri Plokhenko, Paul Menzel) To delve more deeply into this topic, look up the Journal of Applied Meteorology, volume 40, pages 556-567, for a paper by Youri Plokhenko (CIMSS) and Paul Menzel (NOAA) on the mathematical aspects of meteorological processing. CRASRobert
Aune (NOAA, at SSEC) has begun using the Interactive Multisensor Snow
and Ice Mapping System snow cover product generated by the Satellite Analysis
Branch of NOAAs National Environmental Satellite, Data, and Information
Service, a different branch from that collocated with SSECs Cooperative
Institute for Meteorological Studies. SSECs local group is the Advanced
Satellite Products Team within NOAAs Office of Research and
Applications. The product was assimilated into the CIMSS Regional Assimilation
System (CRAS), replacing an older product that was generated by NOAAs
Climate Prediction Center. Preliminary results indicate that the product
maintains good time continuity and, at 25-km horizontal resolution, does
a good job of delineating snow/no-snow edges. A corresponding improvement
in forecasts of low-level temperatures is expected. NCEPJim Jung (CIMSS, stationed at NOAAs Science Center near Washington, D.C.) wrote and delivered a cloud assimilation routine to the National Centers for Environmental Prediction (NCEP). Jim discussed with NCEPs Mesoscale Modeling Team the incorporation of the GOES cloud product into the regional Eta Data Assimilation System (used by the National Weather Service). Jim also delivered the software changes to the EDAS that are required to test the cloud assimilation. NCEP will complete final testing and implementation. Biomass Burning MonitoringAs part of their ongoing collaboration with A. Setzer of Brazils Instituto Nacional de Pesquisas Espaciais (INPE), Joleen Feltz (CIMSS) and Elaine Prins (NOAA) compared GOES ABBA fire products with fire products developed by INPE with data from NOAAs Advanced Very High Resolution Radiometer (AVHRR) for the past seven fire seasons (1995-2001). Results show that the INPE AVHRR fire product detects more fire pixels in a single time period than the GOES-8 ABBA at that same time period, especially in the Cerrado (grassland) region where the fire intensities are generally lower than those observed in forested regions. When comparing diurnal ABBA composites with INPEs daily fire product, the GOES-8 ABBA typically detects 2 to 5 times as many unique fire pixels. This demonstrates the importance of high temporal monitoring to capture agricultural burning in South America where the fire signals are often detectable by satellite for only a few hours. The AVHRR instrument rides on NOAAs polar orbiting satellite, which passes over the same spot on Earth only twice daily, while the GOES satellite sees the same spot on earth continually from its place in geostationary orbit. FLAMBEResearchers Elaine Prins (NOAA) and Chris Schmidt (CIMSS) are providing fire products every half hour for the FLAMBE project. An ongoing collaborative effort, FLAMBE exists to model biomass burning emissions, transport, and radiative effects in a global prognostic meteorology model. The model is run at the Naval Research Laboratory, currently using half-hourly fire products generated with a wildfire algorithm developed at CIMSS by NOAA and CIMSS researchers, directed by Elaine Prins. Other collaborators besides the U.S. Navy include NASA, NOAA and the University of Alabama. Limited currently to the western hemisphere, the investigators hope to cover the globe. A poster titled The Fire Locating and Modeling of Burning Emissions (FLAMBE) Project, authored by J. Reid et al., was presented at the Fall 2001 AGU meeting and provided an overview of this interagency effort that integrates remote sensing fire products into transport models in real time for monitoring and predicting burning emissions and transport. Polar
CloudsJeff Key (NOAA Team Leader at SSEC) and colleagues
have upgraded the experimental near real-time Web product that provides
retrievals of polar surface, cloud and radiative properties from the AVHRR
instrument on NOAAs polar-orbiting satellite. The product has been
upgraded from a developmental version to a stable release (version 1.0).
CASPRJeff Key has also released a new version of the Cloud And Surface Parameter Retrieval (CASPR) system for the Advanced Very High Resolution Radiometer instrument. CASPR is intended for use with high-latitude data, and contains procedures to estimate surface temperature and albedo, cloud amount, particle phase and size, optical depth, temperature, and both surface and top of the atmosphere radiative fluxes. The new version has improved cloud detection, support for the NOAA-16 AVHRR/3, additional output formats, and many other improvements. Polar
WindsLars
Peter Riishojgaard of NASAs Data Assimilation Office (DAO) reported
that the DAO is seeing a distinct positive impact of satellite-derived
polar winds on model forecasts. Scientists Jeff Key (NOAA) and Chris Velden
and Dave Santek (both of CIMSS) provided a 10-day case study of cloud-track
and water vapor winds from the MODerate-resolution Imaging Spectroradiometer
(MODIS) to the DAO. Riishojgaard also reported that the MODIS winds-minus-forecast
metric indicates a fairly dramatic impact, especially for
water vapor winds, and especially in the mid-tropospheric part of the
atmosphere.
MODIS
ResearchKathleen Strabala (CIMSS) has used data from the
MODerate-resolution Imaging Spectroradiometer (MODIS) to simulate a pseudo-true
color geostationary image. She created a composite that includes a blue
channel, which also is being considered for the Advanced Baseline Imager
(ABI) on the next generation geostationary satellites. According to Strabala,
most satellite instruments dont carry the three very narrow red,
green and blue channels (wavelengths) required to produce natural-looking
or true color. MODIS provides not only those three channels
(and many others) but does so in high resolution and globally in a reasonable
time period. The addition of the blue channel on the geostationary ABI
would allow the creation during the day of pseudo-true color full disc
images (images of a face of the globe from north to south poles) at regular
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Tropical
CyclonesChris
Velden, leader of the CIMSS Tropical Cyclones group, was featured in a
Discovery Channel program on Hurricane Floyd that aired January 23. The
program will air again on March 4 at 10:00 p.m. and 2:00 a.m. The show,
one in the series, Billion Dollar Disasters, related the story
of the hurricane from both a scientific and human interest perspective.
Chris Velden gave a concerned scientists perspective in the first
30 minutes and at the end of the show, commenting on atmospheric weather
aspects. He and Gary Wade were shown discussing the storm at a computer
prominently displaying McIDAS. Hurricane Floyd, a storm the size
of Texas, dumped an ocean of rain on an already saturated part of
the southeastern U.S. Commenting on the evacuation decision, Chris noted
that hurricane forecasts must rely heavily on probabilities
to account for the many factors making a storm dangerous, especially light
upper winds, abundant warm water, and a well-developed storm structure.
Joanne Simpson, Chief Scientist for Meteorology in the Earth Sciences
Directorate at NASAs Goddard Space Flight Center wrote, That
was the best hurricane film we have seen in some time, giving Velden
kudos for hitting the level of the audience perfectly without sounding
patronizing. She also found the photography on Floyd and attendant
flooding just terrific. Edmund FitzgeraldLyle Stewart, of Radio Canada International, a service of the Canadian Broadcasting Corporation, contacted Steve Ackerman, CIMSS director, for an interview. In Stewarts words, As part of our regular program Maple Leaf Mailbag, we answer burning questions from our regular listeners. Some have inquired about the origins of the song The Wreck of the Edmund Fitzgerald, and whether the saga is a true story. Having read your informative Web page on the sinking, I was hoping I could conduct a short telephone interview with you about the incident, and how it has passed into the lore of popular culture because of the popular song by Gordon Lightfoot [Canadian singer/songwriter]. Ackerman wrote the piece, describing weather conditions when the ore ship sunk in 1975, with John Knox, then professor in UWMadisons Department of Atmospheric and Oceanic Sciences, as is Ackerman. Stewart said the piece will be posted on the Web by Monday, February 11. Weather Guys Professors Steve Ackerman (also CIMSS director) and Jonathan Martin appeared on Larry Meillers WHA radio call-in show Monday, January 28. As always, they and their callers covered a variety of topics, mostly relating to Wisconsins weather and climate. Weather questions included, what weather conditions cause migraines?a change in temperature, generally warm; what atmospheric conditions are necessary for green flashes?refraction requires differing temperature structures, a long path and the right atmospheric structure. These uncommon occurrences are seen most easily over water. Topics also included rolling snow, rings around the sun, the infinite variety of snowflakes and their dearth this year in comparison with other years, winter droughts, ice age periods, and lightning and thunder in winter storms. You too can learn about weather in all its myriad forms on the last Monday of almost every month. Wisconsin listeners can tune into 970 AM, or 90.7 FM (if you can get the Delafield station). Or, listen in on the Internet. Click on Live Ideas Network Webcast. Februarys broadcast is on the 25th at 11:45 a.m. Central Time. Madisons
WMTV, channel 15, interviewed Steve Ackerman on January 2 for a spot on
wind chill. The formula that weather forecasters used has changed this
year and the reporter was concerned that people understand it correctly.
Steve explained the new guidelines succinctly. AWSWatch for the March 2002 issue of Jack and Jill, the long-lasting educational childrens magazine. It will contain a very brief sidebar on the Automatic Weather Station program, directed by Emeritus Professor Chuck Stearns. Jack and Jill bases its piece on a University Communications release on SSECs Antarctic projects, especially the AWS program. Wilt Sanders,
SSEC senior scientist, and Karen Schwarz, will present Living on
Soft Money: Facts of Life on Tuesday, April 9, at Union South. The
Madison Academic Staff Association announced the talk, a MASA Brown Bag
Information Session, in MASA News for February 2002. | ||||||
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Precision AgricultureIn three to five years, farmers could have access to a tool that will help them make decisions that increase their yields and control runoff. Christine Molling presented research that SSEC is doing with the College of Agriculture and Life Sciences' soil science department at the 2002 Wisconsin Fertilizer, Aglime & Pest Management Conference in Madison. The tool being developed is a numerical model that enables farmers to make informed decisions on crop management. It purports to answer the question, What is the best way to manage agricultural land to maintain yield and minimize production costs? A University Communications article stresses fertilizer decisions; the model actually can simulate varying soil moisture and temperature and crop status caused by variability in topography and soil in a single field. Molling and her colleagues are now seeking a company to help them create software for a farmer to use. Entering the data into the system is the biggest problem right now, so we want to work on making it more user-friendly, Molling explained. The research was reported in the Wisconsin Week Wire, January 23. AMNH The American Museum of Natural History (AMNH) in New York is using Rotation of Neptune, produced by Larry Sromovsky and Pat Fry, in its new Astrophysics Visualization Archive. The Department of Astrophysics and the Hayden Planetarium at the AMNH has created this node of the Virtual Observatory to archive astrophysics visualizations. Sromovsky assembled the images from those taken by NASAs Hubble Space Telescope and Infrared Telescope Facility at Mauna Kea, Hawaii. The AMNH Web site gives Sromovskys brief summary of what is known about Neptunes atmosphere. Contour
MappingA new Earth Science teacher in New York State calls
Steve Ackermans site on contour mapping (with Tom Whittakers
Java applet) a wonderful resource. She says that her 9th grade
meteorology class can practice at home as well as in the Computer
Lab here in school.
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GLOBE, IndiaSanjay Limaye, SSECs outreach director, visited New Delhi, India to help educators and scientists from India, Thailand and Nepal develop their GLOBE program. The 7-day international training workshop focused on protocols of the Global Learning and Observations to Benefit the Environment program. R. Mehta, Director of Indias Ministry of Environment and Forests said, GLOBE provides a wonderful opportunity to school children and communities to learn science through a hands-on participatory approach. V.E.SuomiA
videotape clip of Professor Verner Suomi is found on a CD used in the
COMET program to train new meteorologists in the interpretation of satellite
imagery. NCAR made the tape in 1995 to promote SuomiSat, which uses GPS
signals to make meteorological measurements. In the clip, Professor Suomi
explains the orbits of the two primary weather satellitespolar,
or low earth orbiting, and geostationary orbits. You can see the tape
at the bottom of the page dedicated to Professor Suomi, the founder of
the Space Science and Engineering Center and the father of weather satellites,
at the Suomi
Virtual Museum. SSECs Office of Space Science Education has organized a guest lecture series for West High School science students. First in the series is Astronomy Professor Edward Churchwell who will speak on Formation of the Solar System. Faculty in Space Physics and Astronomy will complete the series. OSSE director Sanjay Limaye said he will give a workshop this summer to help other schools beginning courses in the space sciences. HonorsJohnson AwardDr. Jun Li, a research scientist in SSECs Cooperative Institute for Meteorological Satellite Studies (CIMSS), is the 2002 recipient of the David S. Johnson Award. David Johnson was the first Administrator of NOAAs National Environmental Satellite, Data, and Information Service (NESDIS). The award is given annually by the National Space Club to young professionals who have developed an innovative use of Earth observation satellite data that is, or could be, used for operational purposes to assess and/or predict atmospheric, oceanic or terrestrial conditions. Li has helped to guide many weather satellite programs, supporting important goals in evaluating and enhancing the polar and geostationary operational environmental satellite (POES and GOES) remote sensing programs. His projects include development and implementation of several products from the current GOES sounder and future high-spectral resolution sounders, the development and evaluation of combined POES/GOES retrievals, algorithm development for the MODerate-resolution Imaging Spectroradiometer (MODIS) instrument, and cloud classification studies. In accepting congratulations, Li gave credit for the award to colleagues in CIMSS, especially the GOES and MODIS groups. The award, a plaque, will be presented in March 2002 at the annual Goddard Memorial Dinner, held near Washington, D.C., and hosted by the National Space Club, a non-profit corporation whose membership includes representatives from industry, government, education and the general public. MeetingsAMSThe 2002 annual meeting of the American Meteorological Society played not only its traditional role of forum for atmospheric and oceanographic scientists to present their work, but also emphasized the role of the Society in helping the public. The meeting, held in Orlando, also included the first student meeting and career fair as well as the first Weatherfest, a three-hour science and weather fair for the local public. Of about 700 people attending Weatherfest, 500 of those were from the general public. The conference also held the second presidential forum, focused on the relationship between the AMS and the larger society. Two panels of experts discussed the needs of society for the services of atmospheric science, including CNN science correspondent Ann Kellan, who stressed the need for increased communication of scientists with the media, to keep the public aware of developments. She used the 1997 El Niño event as an example of good scientific communication with the public through the media. At the conference, SSEC talked with a fistful of media representatives interested in atmospheric science, including Kellan, Tom Skilling (Chicagos WGN meteorologist), Sid Perkins (Science News) and Jack Williams (USA Today). Throughout the conference the Electronic Theater was presented by different groups, always presenting vivid imagery of interest to atmospheric scientists. One was hosted by Steve Ackerman with help from SSEC and CIMSS staff and considerable input from Bill Hibbard, Vis5D and VisAD creator. Indeed, all electronic theaters featured many examples based in Vis5D. Other SSEC images were used or referenced in the conference, usually without attribution, as though belonging to the atmospheric science community. In the GOES forum, the SSEC global montage was touted as the future of meteorology. The National Climate Data Centers poster used two SSEC global composites. SSEC and AOS staff gave a number of papers and posters. Donald Johnson, AOS emeritus professor and SSEC scientist, stressed the critical need for accuracy in forecast models. Dave Santek talked about the issues in measuring winds from polar orbit, Tom Zapotocny spoke on the impact of data on the NWS Eta model, and Steve Ackerman and Tom Whittaker presented two interactive Java applets to an audience of appreciative educators. Others spoke also. At the UWMadison booth, SSEC exhibited with hundreds of other companies and organizations. Many conference attendees stopped by to try out McIDAS-Lite, to talk about our research, and to ask about student and employment opportunities.
SSEC hosted
an alumni gathering at a nearby restaurant, one with a suitably low-key
atmospherewere from Wisconsin, after all. Attending were 19
UWMadison alumni, 4 current students and 3 AOS professors, plus
an assortment of friends and colleagues.
Best quote from
the conference, by John Delaney, geologist turned oceanographer: Discovery
is the seed stock of a culturally, educationally, and technologically
alive society. Each generation needs some. Contact the AMS if you
want more information or a proceedings from this years meeting.
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