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Colorado State University
  • Home
  • Welcome & About
    • About CIRA
      • Jobs
      • Letter from Christian Kummerow:
      • Map & Directions
      • Organizational Structure
      • Reports
      • Room Schedules
      • Staff Directory
      • Strategic Plan
      • Vision & Mission Statement
    • Themes
      • Climate and Weather Processes
      • Competitive Projects
      • Data Assimilation
      • Data Distributions
      • Education and Outreach
      • Modeling Systems Research
      • NOAA Projects
      • Satellite Algorithm Development, Training and Education
      • Societal and Economic Impact Studies
    • Collaborative Groups
      • Colorado Climate Center
      • National Park Service
      • Regional and Mesoscale Meteorology Branch
  • Teams
    • Colorado Teams:
      • NOAA/Earth System Research Lab (ESRL) – Boulder, CO
      • Air Quality – Fort Collins, CO
      • Atmospheric Science (ATS) – Fort Collins, CO
      • Carbon – Fort Collins, CO
      • CIRA Software Engineering Group (CSEG) – Fort Collins, CO
      • Data Assimilation (DA) – Fort Collins, CO
      • Data Processing Centers (DPC) – Fort Collins, CO
      • Independent – Fort Collins, CO
      • MetSat – Fort Collins, CO
      • Regional and Mesoscale Meteorology Branch (RAMMB) – Fort Collins, CO
      • Training – Fort Collins, CO
      • Tropical Cyclone – Fort Collins, CO
    • Other Location Teams:
      • National Hurricane Center – Miami, FL
      • NESDIS Environmental Applications Team (NEAT) – College Park, MD
      • NWS/Meteorological Development Laboratory (MDL) – Silver Spring, MD
      • NWS/Aviation Weather Center (AWC) – Kansas City, MO
      • Office of Marine and Aviation Operations (OMAO-Training) – Kansas City, MO
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      • CIRA Administration News
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      • ECMWF Nature Run
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        • GOES-West / GOES-East
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Christman Field Latest Observations
Date Time
MST
Temp
°F
RH
%
DewPt
°F
Wind
mph
Dir
°
Gust
mph
Dir
°
Press
in Hg
Solar
W/m^2
Prec
in
2021-04-22 20:00 38.5 81.1 33.2 4.6 302 6.3 282 0.000 0.0 0.00
2021-04-22 19:55 39.8 75.8 32.8 3.7 298 6.1 289 0.000 0.0 0.00
2021-04-22 19:50 40.4 76.3 33.5 2.5 289 6.0 287 0.000 0.0 0.00
2021-04-22 19:45 41.5 74.0 33.8 1.7 326 3.4 335 0.000 0.0 0.00
2021-04-22 19:40 41.9 69.8 32.8 3.8 335 4.6 334 0.000 0.0 0.00
2021-04-22 19:35 41.5 72.6 33.3 4.1 332 4.7 327 0.000 0.0 0.00
2021-04-22 19:30 41.7 73.5 33.9 1.4 319 3.6 319 0.000 0.0 0.00
2021-04-22 19:25 41.8 73.4 33.9 2.6 333 4.9 313 0.000 0.0 0.00
2021-04-22 19:20 44.6 68.4 34.8 1.9 71 3.8 109 0.000 0.0 0.00
2021-04-22 19:15 45.2 66.4 34.7 2.3 109 3.4 124 0.000 0.1 0.00
2021-04-22 19:10 45.3 65.7 34.5 3.1 119 4.1 130 0.000 0.2 0.00
2021-04-22 19:05 45.4 66.0 34.7 2.1 137 3.5 137 0.000 0.5 0.00
2021-04-22 19:00 45.5 64.8 34.4 2.5 162 3.9 161 0.000 1.1 0.00
2021-04-22 18:55 45.9 65.2 34.9 4.0 160 5.3 146 0.000 2.3 0.00
2021-04-22 18:50 46.1 63.7 34.5 3.7 131 4.6 152 0.000 3.7 0.00
2021-04-22 18:45 46.0 63.2 34.2 3.8 158 6.0 178 0.000 5.6 0.00
2021-04-22 18:40 46.2 64.6 34.9 4.2 162 5.4 179 0.000 7.9 0.00
2021-04-22 18:35 46.7 64.2 35.2 5.8 169 7.7 170 0.000 11.0 0.00
2021-04-22 18:30 47.0 62.7 34.9 5.7 168 7.6 163 0.000 14.2 0.00
2021-04-22 18:25 47.3 62.5 35.1 5.6 163 8.8 166 0.000 17.3 0.00
2021-04-22 18:20 47.4 61.6 34.9 7.1 153 9.5 153 0.000 22.8 0.00
2021-04-22 18:15 47.6 62.2 35.3 6.6 151 9.2 158 0.000 30.1 0.00
2021-04-22 18:10 47.9 61.2 35.1 7.3 154 10.5 151 0.000 41.1 0.00
2021-04-22 18:05 48.0 59.5 34.6 5.8 137 8.5 152 0.000 56.0 0.00
2021-04-22 18:00 48.0 59.7 34.6 7.0 140 10.7 148 0.000 79.1 0.00
2021-04-22 17:55 47.9 58.9 34.2 8.2 134 11.6 148 0.000 63.4 0.00
2021-04-22 17:50 48.2 59.4 34.7 9.3 145 13.5 171 0.000 56.8 0.00
2021-04-22 17:45 48.7 58.9 34.9 10.4 163 13.9 165 0.000 59.1 0.00
2021-04-22 17:40 49.2 58.8 35.4 10.0 166 16.0 170 0.000 98.9 0.00
2021-04-22 17:35 49.3 58.3 35.3 9.3 159 13.9 189 0.000 159.1 0.00
CIRA

Cooperative Institute for Research in the Atmosphere

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On the Convective Coupling and Moisture Organization of East Pacific Easterly Waves


Processes associated with the local amplification of easterly waves (EWs) in the east Pacific warm pool are explored. Developing EWs favor convection in the southwest and northeast quadrants of the disturbance. In nascent EWs, convection favors the southwest quadrant. As the EW life cycle progresses, convection in the northeast quadrant becomes increasingly prominent and southwest quadrant convection wanes. The EW moisture budget reveals that anomalous meridional winds acting on the mean meridional moisture gradient of the ITCZ produce moisture anomalies supportive of convection in the southwest quadrant early in the EW life cycle. As EWs mature, moisture anomalies on the poleward side of the EW begin to grow and are supported by the advection of anomalous moisture by the mean zonal wind.

In the southwest and northeast portions of the wave, where convection anomalies are favored, lower-tropospheric vorticity is generated locally through vertical stretching that supports a horizontal tilt of the wave from the southwest to the northeast. EWs with such tilts are then able to draw energy via barotropic conversion from the background cyclonic zonal wind shear present in the east Pacific. Convection anomalies associated with EWs vary strongly with changes in the background intraseasonal state. EWs during westerly and neutral intraseasonal periods are associated with robust convection anomalies. Easterly intraseasonal periods are, at times, associated with very weak EW convection anomalies because of weaker moisture and diluted CAPE variations.

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Fort Collins, CO 80521

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