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Our Vision:

Scientific understanding of the energetics, dynamics and chemistry

of the terrestrial and planetary environments,and implications to the society

 


हमारा उद्देश्य:
भौमिक एवं ग्रहीय पर्यावरण के ऊर्ज़ा विज्ञान, गतिकी, एवं

रसायन शास्त्र की वैज्ञानिक समझ,
तथा समाज़ पर इनकी विवक्षा

  OUR DIRECTOR    
 

Radhika

   
  Dr. Radhika Ramachandran    
  Dr. Radhika Ramachandran joined ISRO in Jan. 1984 and started her research career in the area of "Boundary Layer Physics". She was the founder head of a new branch, "NAM" at SPL. She has taken over as Director of SPL in Mar. 2017. [MORE ....]    

 

 

 

new1Das et al. (2020),  Long-term observations of stratosphere-troposphere exchange using MST Radar and Aura MLS measurements over a tropical station Gadanki, Radio Science, https://doi.org/10.1029/2019RS006969.

new1Girach et al., (2020), "O3 and CO in the South Asian outflow over the Bay of Bengal: Impact of monsoonal dynamics and chemistry", Atmospheric Environment, 233, 117610, 2020. (http://dx.doi.org/10.1016/j.atmosenv.2020.117610

new1Usha  et al., (2020), "Modeling of aerosol induced snow albedo feedbacks over the Himalayas and its implications on regional climate", Climate Dynamics, 2020. (http://dx.doi.org/10.1007/s00382-020-05222-5)

 

new1Uma et al., (2020) , Role of Intra-Seasonal Variability in the Indian Summer Monsoon on the Hydration and Dehydration of the Upper Troposphere, Theoretical and Applied Climatology, https://doi.org/10.1007/s00704-020-03243-y

new1Suneeth and Das (2020), Zonally resolved water vapour coupling with tropical tropopause temperature: Seasonal and interannual variability, and influence of the Walker circulation, Climate Dynamics, https://doi.org/10/1007/s00328-020-05255-w.

new1Boreddy et al., (2020), Impact of ice-free oases on particulate matter over the East Antarctic: Inferences from the carbonaceous, water-soluble species and trace metals", Polar Sciencehttp://dx.doi.org/10.1016/j.polar.2020.100520

new1Girach  et al., (2020), Tropospheric carbon monoxide over the northern Indian Ocean during winter: influence of inter-continental transport", Climate Dynamics, 2020. http://dx.doi.org/10.1007/s00382-020-05269-4

new1Ojha et al. (2020), On the widespread enhancement in fine particulate matter across the Indo-Gangetic Plain towards winter", Scientific Reports, 10:5862, http://dx.doi.org/10.1038/s41598-020-62710-8

new1Kompalli et al.  (2020), Seasonal contrast in size distributions and mixing state of black carbon and its association with PM1.0 chemical composition from the eastern coast of India, Atmos. Chem. Phys., 20, 3135–3149, https://doi.org/10.5194/acp-20-3135-2020.

new1Koushik et al.  (2020), Planetary waves in the mesosphere lower thermosphere during stratospheric sudden warming: observations using a network of meteor radars from high to equatorial latitudes. Climate Dynamics https://doi.org/10.1007/s00382-020-05214-5

new1Nair,et al., (2020),Cloud condensation nuclei properties of South Asian outflow over the northern Indian Ocean during winter, Atmos. Chem. Phys., 20, 3135–3149, https://doi.org/10.5194/acp-20-3135-2020

new1Das and Suneeth(2020), Seasonal and interannual variations of water vapor in the upper troposphere and lower stratosphere over the Asian Summer Monsoon region- in perspective of the tropopause and ocean-atmosphere interactions, Journal of Atmospheric and Solar-Terrestrial Physics, 10.1016/j.jastp.2020.105244, 2020
new1Muhsin et al., (2020),Contrasting features of tropospheric turbulence over the Indian peninsula,Journal of Atmospheric and Solar-Terrestrial Physics,197, https://doi.org/10.1016/j.jastp.2019.105179
new1Kumar and Sunilkumar, (2020),Assessment of INSAT-3D Retrieved Temperature and Water Vapour With Collocated Radiosonde Measurements Over Indian Region, IEEE Transactions on Geoscience and Remote Sensing.doi : 10.1109/TGRS.2019.2960277

new1Manju et al., (2020), Chandrayaan-2 Lander platform:RAMBHA-LP payload, Current Science, VOL. 118, NO. 3, 10.

new1Aswathy and Manju, (2020), Time of evening zonal drift reversal in F- region and its implications for post sunset ionosphere, Journal of Atmospheric and Solar–Terrestrial Physics, 200, 105210, https://doi.org/10.1016, 2020 /j.jastp.2020.105210

new1Manju et al., (2020), In-situ observations of rocket burn induced modulations of the top side ionosphere using the IDEA payload on-board the unique orbiting experimental platform (PS4) of the Indian Polar orbiting Satellite Launch Vehicle mission, Journal of Atmospheric and Solar–Terrestrial Physics 199, https://doi.org/10.1016/j.jastp.2020.105203

new1Mathewet al., (2020), Millimeter-Wave Radiometric Information Content Analysis for Venus Atmospheric Constituents, Radio Science, 55,e2019RS006913. https://doi.org/10.1029/2019RS006913

new1Koushik et al.,(2020), Westward Acceleration of Tropical Stratopause Zonal Winds during Major Sudden Stratospheric Warming Events, Geophysical Research Letters, https://doi.org/10.1029/2019GL086857

new1Muhsin, et al., (2020),“Contrasting features of tropospheric turbulence over the Indian peninsula”,Journal of Atmospheric and Solar-Terrestrial Physics,197,https://doi.org/10.1016/j.jastp.2019.105179

new1Davis et al., (2020),Effect of Clouds on the Diurnal Evolution of Atmospheric Boundary Layer Height over a Tropical Coastal Station", Boundary-Layer Meteorology, https://doi.org/10.1007/s10546-019-00497-6

new1Mishra et al.,(2020), "Characterization of GSAT-14 satellite Ka-band microwave signal attenuation due to precipitation over a Tropical Coastal station in the southern peninsular region of the Indian subcontinent", Radio Science, 55, e2019RS006910. https://doi.org/10.1029/2019RS006910

new1Aneesh and Sijikumar, (2020),Existence of ‘mini-break’ like condition during early Indian monsoon onset years, Climate Dynamics, http://dx.doi.org/10.1007/s00382-020-05121-9 2020

new1Nair et al.,(2020), Role of Cyclone “Ockhi” in the re-distribution of aerosols and its impact on the precipitation over the Arabian Sea, Atmospheric Research, 235, https://doi.org/10.1016/j.atmosres.2020.104797

 

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Base Height of F-region during 2006 - 2007 Metadata

Virtual base height of F-region (h′F) from 17.5 h to 21 hrs on during the year 2006-2007                              
                               
%Day 17.5 17.75 18 18.25 18.5 18.75 19 19.25 19.5 19.75 20 20.25 20.5 20.75 21
1 241.1 251.8 248.2 248.2 244.6 244.6 244.6 246.4 242.9 244.6 242.9 241.1 237.5 233.9 232.1
2 253.6 255.4 255.4 258.9 266.1 273.2 273.2 273.2 280.4 280.4 278.6 275 266.1 258.9 250
3 248.2 257.1 269.6 275 287.5 298.2 303.6 303.6 300 298.2 289.3 285.7 275 266.1 258.9
4 242.9 253.6 255.4 262.5 273.2 287.5 292.9 298.2 301.8 300 296.4 285.7 280.4 273.2 260.7
5 241.1 250 255.4 264.3 282.1 307.1 325 335.7 328.6 317.9 314.3 310.7 308.9 294.6 282.1
6 239.3 244.6 248.2 244.6 242.9 241.1 235.7 233.9 241.1 246.4 248.2 253.6 251.8 248.2 250
7 242.9 248.2 258.9 264.3 273.2 283.9 300 310.7 319.6 323.2 325 321.4 308.9 301.8 294.6
8 244.6 250 262.5 273.2 289.3 312.5 316.1 339.3 369.6 400 419.6 433.9 435.7 426.8 417.9
9 244.6 251.8 255.4 264.3 275 283.9 283.9 280.4 273.2 271.4 273.2 262.5 257.1 250 239.3
10 248.2 250 258.9 258.9 258.9 251.8 248.2 244.6 239.3 237.5 241.1 241.1 241.1 241.1 241.1
11 253.6 258.9 262.5 260.7 267.9 271.4 273.2 280.4 278.6 280.4 282.1 271.4 269.6 264.3 251.8
12 241.1 246.4 255.4 258.9 260.7 260.7 264.3 271.4 271.4 273.2 271.4 266.1 262.5 258.9 246.4
13 237.5 248.2 248.2 250 253.6 260.7 267.9 269.6 273.2 266.1 260.7 257.1 250 246.4 248.2
14 260.7 255.4 253.6 246.4 260.7 264.3 273.2 278.6 283.9 296.4 296.4 275 273.2 264.3 260.7
15 235.7 246.4 248.2 250 248.2 253.6 258.9 260.7 266.1 262.5 260.7 260.7 260.7 260.7 260.7
16 235.7 248.2 250 257.1 258.9 264.3 264.3 273.2 285.7 294.6 292.9 287.5 282.1 276.8 267.9
17 235.7 237.5 241.1 239.3 237.5 235.7 235.7 233.9 235.7 226.8 226.8 216.1 216.1 212.5 214.3
18 235.7 244.6 244.6 244.6 242.9 246.4 246.4 248.2 248.2 242.9 244.6 239.3 241.1 241.1 233.9
19 230.4 237.5 248.2 239.3 237.5 235.7 237.5 242.9 248.2 253.6 255.4 248.2 241.1 233.9 232.1
20 233.9 235.7 250 253.6 253.6 253.6 251.8 255.4 258.9 260.7 260.7 257.1 250 235.7 235.7
21 233.9 235.7 250 253.6 253.6 253.6 251.8 255.4 258.9 260.7 260.7 257.1 250 235.7 235.7
21 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN
22 237.5 241.1 248.2 248.2 248.2 248.2 273.2 273.2 283.9 294.6 296.4 287.5 282.1 275 262.5
23 237.5 241.1 248.2 257.1 258.9 266.1 273.2 275 275 275 269.6 264.3 257.1 250 244.6
24 237.5 241.1 248.2 248.2 246.4 246.4 250 248.2 248.2 246.4 246.4 248.2 260.7 262.5 273.2
25 244.6 251.8 260.7 264.3 269.6 273.2 280.4 273.2 273.2 262.5 266.1 264.3 264.3 260.7 257.1
26 244.6 251.8 260.7 264.3 269.6 273.2 280.4 273.2 273.2 262.5 266.1 264.3 264.3 260.7 257.1
26 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN
27 237.5 250 258.9 273.2 287.5 303.6 337.5 342.9 348.2 364.3 355.4 355.4 358.9 351.8 344.6
28 237.5 250 258.9 273.2 287.5 303.6 337.5 342.9 348.2 364.3 355.4 355.4 358.9 351.8 344.6
28 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN
29 226.8 233.9 239.3 262.5 271.4 278.6 285.7 296.4 305.4 310.7 310.7 307.1 310.7 310.7 310.7
30 228.6 244.6 248.2 260.7 269.6 278.6 285.7 291.1 296.4 303.6 300 300 289.3 280.4 278.6
31 233.9 242.9 248.2 248.2 250 255.4 257.1 258.9 260.7 260.7 262.5 264.3 266.1 273.2 271.4
32 237.5 244.6 251.8 253.6 253.6 258.9 264.3 269.6 269.6 273.2 271.4 269.6 271.4 273.2 275
33 226.8 241.1 242.9 244.6 248.2 251.8 258.9 271.4 276.8 280.4 283.9 283.9 283.9 283.9 283.9
34 233.9 242.9 248.2 253.6 258.9 260.7 271.4 280.4 289.3 301.8 310.7 321.4 319.6 319.6 312.5
35 226.8 239.3 250 246.4 241.1 237.5 244.6 248.2 255.4 258.9 260.7 258.9 255.4 251.8 241.1
36 232.1 237.5 253.6 260.7 260.7 260.7 264.3 267.9 271.4 285.7 294.6 310.7 355.4 373.2 378.6
37 226.8 237.5 250 248.2 250 248.2 246.4 244.6 244.6 248.2 248.2 246.4 253.6 246.4 239.3
38 237.5 242.9 251.8 257.1 269.6 283.9 301.8 312.5 308.9 305.4 301.8 287.5 276.8 257.1 241.1
39 237.5 235.7 253.6 257.1 255.4 260.7 271.4 269.6 271.4 271.4 269.6 269.6 266.1 269.6 262.5
40 221.4 233.9 239.3 242.9 244.6 246.4 257.1 258.9 258.9 253.6 251.8 251.8 250 248.2 242.9
41 225 235.7 241.1 248.2 255.4 271.4 283.9 280.4 275 269.6 266.1 262.5 258.9 251.8 246.4
42 230.4 228.6 239.3 244.6 246.4 257.1 260.7 269.6 276.8 278.6 278.6 264.3 253.6 239.3 225
43 217.9 232.1 244.6 257.1 262.5 271.4 287.5 308.9 323.2 332.1 342.9 337.5 314.3 300 291.1
44 226.8 230.4 235.7 241.1 244.6 244.6 246.4 246.4 255.4 258.9 267.9 266.1 266.1 262.5 260.7
45 217.9 230.4 244.6 244.6 250 248.2 246.4 244.6 242.9 239.3 235.7 232.1 235.7 233.9 230.4
46 203.6 219.6 241.1 246.4 255.4 260.7 262.5 260.7 264.3 262.5 260.7 257.1 250 246.4 242.9
47 219.6 223.2 242.9 257.1 273.2 257.1 262.5 260.7 262.5 260.7 276.8 264.3 262.5 273.2 271.4
48 208.9 237.5 246.4 266.1 273.2 291.1 316.1 342.9 344.6 344.6 344.6 344.6 344.6 344.6 344.6
49 221.4 223.2 241.1 244.6 248.2 244.6 241.1 237.5 233.9 258.9 260.7 267.9 269.6 269.6 269.6
50 233.9 233.9 246.4 257.1 258.9 262.5 273.2 289.3 307.1 317.9 321.4 325 333.9 323.2 323.2
51 228.6 246.4 248.2 250 253.6 257.1 264.3 262.5 266.1 262.5 260.7 267.9 266.1 258.9 257.1
52 214.3 230.4 248.2 253.6 257.1 267.9 285.7 289.3 291.1 291.1 291.1 292.9 292.9 289.3 287.5
53 214.3 230.4 248.2 253.6 257.1 267.9 285.7 289.3 291.1 291.1 291.1 292.9 292.9 289.3 287.5
53 223.2 237.5 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN
54 208.9 212.5 233.9 248.2 246.4 248.2 257.1 264.3 269.6 276.8 276.8 260.7 257.1 250 237.5
55 223.2 235.7 246.4 258.9 267.9 276.8 289.3 292.9 294.6 289.3 282.1 278.6 276.8 283.9 280.4
56 214.3 223.2 230.4 233.9 242.9 258.9 282.1 317.9 316.1 319.6 332.1 333.9 339.3 342.9 346.4
57 228.6 233.9 244.6 255.4 257.1 258.9 264.3 269.6 283.9 287.5 289.3 289.3 289.3 289.3 289.3
58 226.8 233.9 242.9 251.8 253.6 251.8 258.9 269.6 271.4 280.4 292.9 307.1 321.4 321.4 321.4
59 219.6 228.6 237.5 244.6 244.6 242.9 237.5 230.4 223.2 219.6 216.1 214.3 212.5 216.1 217.9
60 198.2 189.3 241.1 257.1 269.6 267.9 269.6 269.6 269.6 267.9 262.5 258.9 264.3 266.1 273.2
61 217.9 225 233.9 239.3 233.9 228.6 221.4 210.7 208.9 208.9 208.9 207.1 210.7 214.3 217.9
62 233.9 212.5 214.3 214.3 269.6 280.4 296.4 301.8 321.4 325 325 325 325 325 325
63 228.6 232.1 235.7 242.9 244.6 244.6 242.9 244.6 244.6 246.4 264.3 266.1 269.6 269.6 264.3
64 228.6 232.1 239.3 246.4 246.4 241.1 239.3 242.9 257.1 276.8 280.4 292.9 291.1 291.1 300
65 207.1 225 241.1 246.4 246.4 244.6 239.3 237.5 233.9 232.1 226.8 223.2 226.8 233.9 239.3
66 189.3 230.4 230.4 239.3 241.1 241.1 232.1 233.9 233.9 235.7 235.7 233.9 237.5 235.7 230.4