Analysis and forecast improvements from simulated satellite water vapor profiles and rainfall using a global data assimilation system

Journal Article · Fri Oct 01 04:00:00 EDT 1993 · Monthly Weather Review; (United States)

DOI:https://doi.org/10.1175/1520-0493(1993)121<2727:AAFIFS>2.0.CO;2· OSTI ID:5712208

Nehrkorn, T; Hoffman, R N; Louis, J F; Isaacs, R G; Moncet, J L ^[1]

---

1. Atmospheric and Environmental Research, Inc., Cambridge, MA (United States)

The potential improvements of analyses and forecasts from the use of satellite-observed rainfall and water vapor measurements from the Defense Meteorological Satellite Program Sensor Microwave (SSM) T-1 and T-2 instruments are investigated in a series of observing system simulation experiments using the Air Force Phillips Laboratory (formerly Air Force Geophysics Laboratory) data assimilation system. Simulated SSM radiances are used directly in a radiance retrieval step following the conventional optimum interpolation analysis. Simulated rainfall rates in the tropics are used in a moist initialization procedure to improve the initial specification of divergence, moisture, and temperature. Results show improved analyses and forecasts of relative humidity and winds compared to the control experiment in the tropics and the Southern Hemisphere. Forecast improvements are generally restricted to the first 1-3 days of the forecast. 27 refs., 11 figs.

• OSTI ID: 5712208
• Journal Information: Monthly Weather Review; (United States), Journal Name: Monthly Weather Review; (United States) Vol. 121:10; ISSN MWREAB; ISSN 0027-0644
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540110*
ATMOSPHERIC PRECIPITATIONS
COMPUTERIZED SIMULATION
DATA ANALYSIS
EARTH PLANET
ELECTRONIC EQUIPMENT
EQUIPMENT
FLUIDS
FORECASTING
GASES
HUMIDITY
METEOROLOGY
MICROWAVE EQUIPMENT
MOISTURE
OPTIMIZATION
PLANETS
RAIN
REMOTE SENSING
SATELLITES
SIMULATION
SOUTHERN HEMISPHERE
VAPORS
WATER VAPOR
WEATHER