LOW-LEVEL DESCRIPTORS


Low-level (1000 hPa) descriptors are computed as meridional and zonal gradients for Moist Static Energy and Mean Sea-level Pressure.

Meridional gradients are calculated over the 10W - 10E window, as NORTH minus SOUTH box

Zonal gradients are calculated over the 10N - 20N AND 20N-30N windows, as WEST minus EAST box

Moist Static Energy

  1. Time-series
    1. Meridional gradients
    2. Zonal gradients
    3. Individual indexes for the meridional gradients
    4. Individual indexes for the zonal gradients
  2. Time-series plots
    1. Meridional gradients
    2. Zonal gradients

Mean Sea Level Pressure

  1. Time-series
    1. Meridional gradients
    2. Zonal gradients
    3. Individual indexes for the meridional gradients
    4. Individual indexes for the zonal gradients
  2. Time-series plots
    1. Meridional gradients
    2. Zonal gradients


Moist Static Energy

Time-series (ascii)

Time-series files are provided in ASCII, each file contains 4 columns, with:

column 1: integer = YEAR
column 2: integer = MONTH
column 3: integer = DAY
column 4: integer = values (Kj/Kg for MSE)

Meridional gradients Zonal gradients Individual Indexes for the meridional gradients (i.e. NORTH and SOUTH indexes) Individual Indexes for the zonal gradients (i.e. WEST and EAST indexes for the two latitude belts [10N20N and 20N30N])
Time-series plots

The top plots represents the raw daily values in black (in KJ/Kg),  the blue  line is the mean annual cycle

The figures are provided in jpeg (left column) and postscript (right), the names follow the rule NCEP2_MSE_MEgrad_{region_number}_{northern box}_{southern box}_{period}.{extension} for the meridional gradients and NCEP2_MSLP_ZO_grad_{latitudinal belt}_{western box}_{eastern box}_{period}.{extension} for the zonal gradients

Meridional gradients

NCEP2_MSE_MEgrad_Reg1_Equ20N-20SEqu_1979_2004.jpg
 NCEP2_MSE_MEgrad_Reg1_Equ20N-20SEqu_1979_2004.ps
NCEP2_MSE_MEgrad_Reg2_20N25N-5S5N_1979_2004.jpg
 NCEP2_MSE_MEgrad_Reg2_20N25N-5S5N_1979_2004.ps
NCEP2_MSE_MEgrad_Subreg1_15N25N-5N15N_1979_2004.jpg
 NCEP2_MSE_MEgrad_Subreg1_15N25N-5N15N_1979_2004.ps
NCEP2_MSE_MEgrad_Subreg2_5N15N-5S5N_1979_2004.jpg
 NCEP2_MSE_MEgrad_Subreg2_5N15N-5S5N_1979_2004.ps
NCEP2_MSE_MEgrad_Subreg3_10N15N-5N10N_1979_2004.jpg
 NCEP2_MSE_MEgrad_Subreg3_10N15N-5N10N_1979_2004.ps
NCEP2_MSE_MEgrad_Subreg4_15N20N-10N15N_1979_2004.jpg
 NCEP2_MSE_MEgrad_Subreg4_15N20N-10N15N_1979_2004.ps

Zonal gradients

NCEP2_MSE_ZOgrad_10N20N_10W00W-00E10E_1979_2004.jpg
 NCEP2_MSE_ZOgrad_10N20N_10W00W-00E10E_1979_2004.ps
NCEP2_MSE_ZOgrad_10N20N_15W5W-25W15W_1979_2004.jpg
 NCEP2_MSE_ZOgrad_10N20N_15W5W-25W15W_1979_2004.ps
NCEP2_MSE_ZOgrad_10N20N_20W10W-10W00W_1979_2004.jpg
 NCEP2_MSE_ZOgrad_10N20N_20W10W-10W00W_1979_2004.ps
NCEP2_MSE_ZOgrad_20N30N_10W00W-00E10E_1979_2004.jpg
 NCEP2_MSE_ZOgrad_20N30N_10W00W-00E10E_1979_2004.ps
NCEP2_MSE_ZOgrad_20N30N_15W5W-25W15W_1979_2004.jpg
 NCEP2_MSE_ZOgrad_20N30N_15W5W-25W15W_1979_2004.ps
NCEP2_MSE_ZOgrad_20N30N_20W10W-10W00W_1979_2004.jpg
 NCEP2_MSE_ZOgrad_20N30N_20W10W-10W00W_1979_2004.ps


Mean Sea-Level Pressure

Time-series (ascii)

Time-series files are provided in ASCII, each file contains 4 columns, with:

column 1: integer = YEAR
column 2: integer = MONTH
column 3: integer = DAY
column 4: integer = values (Kj/Kg for MSLP)

Meridional gradients Zonal gradients Individual Indexes for the meridional gradients (i.e. NORTH and SOUTH indexes) Individual Indexes for the zonal gradients (i.e. WEST and EAST indexes for the two latitude belts [10N20N and 20N30N])
Time-series plots

The top plots represents the raw daily values in black (in Pa),  the blue  line is the mean annual cycle

The figures are provided in jpeg (left column) and postscript (right), the names follow the rule NCEP2_MSLP_ME_grad_{region_number}_{northern box}_{southern box}_{period}.{extension} for the meridional gradients and NCEP2_MSLP_ZO_grad_{latitudinal belt}_{western box}_{eastern box}_{period}.{extension} for the zonal gradients

Meridional gradients

NCEP2_MSLP_MEgrad_Reg1_Equ20N-20SEqu_1979_2004.jpg
 NCEP2_MSLP_MEgrad_Reg1_Equ20N-20SEqu_1979_2004.ps
NCEP2_MSLP_MEgrad_Reg2_20N25N-5S5N_1979_2004.jpg
 NCEP2_MSLP_MEgrad_Reg2_20N25N-5S5N_1979_2004.ps
NCEP2_MSLP_MEgrad_Subreg1_15N25N-5N15N_1979_2004.jpg
 NCEP2_MSLP_MEgrad_Subreg1_15N25N-5N15N_1979_2004.ps
NCEP2_MSLP_MEgrad_Subreg2_5N15N-5S5N_1979_2004.jpg
 NCEP2_MSLP_MEgrad_Subreg2_5N15N-5S5N_1979_2004.ps
NCEP2_MSLP_MEgrad_Subreg3_10N15N-5N10N_1979_2004.jpg
 NCEP2_MSLP_MEgrad_Subreg3_10N15N-5N10N_1979_2004.ps
NCEP2_MSLP_MEgrad_Subreg4_15N20N-10N15N_1979_2004.jpg
 NCEP2_MSLP_MEgrad_Subreg4_15N20N-10N15N_1979_2004.ps

Zonal gradients

NCEP2_MSLP_ZOgrad_10N20N_10W00W-00E10E_1979_2004.jpg
 NCEP2_MSLP_ZOgrad_10N20N_10W00W-00E10E_1979_2004.ps
NCEP2_MSLP_ZOgrad_10N20N_15W5W-25W15W_1979_2004.jpg
 NCEP2_MSLP_ZOgrad_10N20N_15W5W-25W15W_1979_2004.ps
NCEP2_MSLP_ZOgrad_10N20N_20W10W-10W00W_1979_2004.jpg
 NCEP2_MSLP_ZOgrad_10N20N_20W10W-10W00W_1979_2004.ps
NCEP2_MSLP_ZOgrad_20N30N_10W00W-00E10E_1979_2004.jpg
 NCEP2_MSLP_ZOgrad_20N30N_10W00W-00E10E_1979_2004.ps
NCEP2_MSLP_ZOgrad_20N30N_15W5W-25W15W_1979_2004.jpg
 NCEP2_MSLP_ZOgrad_20N30N_15W5W-25W15W_1979_2004.ps
NCEP2_MSLP_ZOgrad_20N30N_20W10W-10W00W_1979_2004.jpg
 NCEP2_MSLP_ZOgrad_20N30N_20W10W-10W00W_1979_2004.ps